Publications

2023

• Parks, AR, McCormick, RD, Byrne, JA, Escalante-Semerena, JC. In Salmonella enterica, the pathogenicity island 2 (SPI-2) regulator PagR regulates its own expression and the expression of a five-gene operon that encodes transketolase C Molecular Microbiology 2023 120(), 575-586 (DOI: https://doi.org/10.1111/mmi.15143)
• Malalasekara, LR, and Escalante-Semerena, JC. The coenzyme B12 precursor 5,6-dimethylbenzimidazole is a flavin antagonist in Salmonella Microbial Cell 2023 10(9), 178-194 (DOI: 10.15698/mic2023.09.803)

2022

• Jeter, VL, AH Schwarzwalder, I Rayment, I, and JC Escalante-Semerena.Structural studies of the phosphoribosyltransferase involved in cobamide biosynthesis in methanogenic archaea and cyanobacteria Sci. Rep. 2022 12(), 17175 (DOI: 10.1038/s41598-022-21765-5)
• Villa, LA, and JC Escalanate-Semerena.. Acinetobacter baumannii catabolizes ethanolamine in the absence of a metabolosome and converts cobinamide into adenosylated cobamides mBio 2022 13(), e0179322 (DOI: 10.1128/mbio.01793-22)
• Costa, FG, and JC Escalante-Semerena.. Localization and interaction studies of the Salmonella enterica ethanolamine ammonia-lyase (EutBC), its reactivase (EutA) and the EutT corrinoid adenosyltransferase Mol. Microbiol. 2022 118(3), 191-207 (DOI: 10.1111/mmi.14962)
• Costa, FG, EA Villa, and JC Escalante-Semerena.A method for the efficient adenosylation of corrinoids Methods Enzymol. 2022 668(), 87-108 (DOI: 10.1016/bs.mie.2021.09.013)
• Villa, EA, and JC Escalante-Semerena.A method for the production, purification and liposome reconstitution of cobamide synthase Methods Enzymol. 2022 (), 109-122 (DOI: 10.1016/bs.mie.2021.11.015)
• Malalasekara, L., and JC Escalante-SemerenaA method for the isolation of α-ribazole from vitamin B12, and its enzymatic conversion to α-ribazole 5'-phosphate Methods Enzymol. 2022 668(), 125-136 (DOI: 10.1016/bs.mie.2021.11.024)
• Jeter, VL and JC Escalante-Semerena.. Elevated levels of an enzyme involved in coenzyme B12 biosynthesis kills Escherichia coli mBio 2022 13(1), e02697 (DOI: 10.1128/mBio.02697-21)

2021

• Jeter, VL, and JC Escalante-Semerena.Sirtuin-dependent reversible lysine acetylation controls the activity of acetyl-Coenzyme A synthetase in Campylobacter jejuni J. Bacteriol. 2021 203(20), e00333-21 (DOI: 10.1128/JB.00333-21)
• Mattes, TA, L. Malalasekara, and JC Escalante-Semerena.. Functional studies of α-riboside activation by the α-ribazole kinase (CblS) from Geobacillus kaustophilus Biochemistry 2021 60(), 2011-2021 (DOI: 10.1021/acs.biochem.1c00119)
• Jeter, VL, and JC Escalante-Semerena.Insights into the relationship between cobamide synthase and the cell membrane mBio 2021 12(), e00215-21 (DOI: 10.1128/mBio.00215-21)

2020

• Parks, AR, and JC Escalante-Semerena.. Modulation of the bacterial CobB sirtuin deacylase activity by N-terminal acetylation. Proc. Natl. Acad. Sci. U S A 2020 117(27), 15895-15901 (DOI: 10.1073/pnas.2005296117)
• Burckhardt, RM, and JC Escalante-Semerena.Small-Molecule Acetylation by GCN5-RelatedN-Acetyltransferases in Bacteria. MIcrobiol. Molec. Biol. Rev. 2020 84(2), e00090-19 (DOI: 10.1128/MMBR.00090-19)
• Costa, FG, ED Greenhalgh, TC Brunold, and JC Escalante-Semerena.. Mutational and functional analyses of substrate binding and catalysis of the Listeria monocytogenes EutT ATP:Co(I)rrinoid Adenosyltransferase. Biochemistry 2020 59(10), (DOI: 10.1021/acs.biochem.0c00078)
• Burckhardt, RM, CM VanDrisse, AC Tucker, JC Escalante-Semerena. . New AMP-forming acid:CoA ligases from Streptomyces lividans, some of which are posttranslationally regulated by reversible lysine acetylation. Mol. Microbiol. 2020 113(1), 253-269 (DOI: 10.1111/mmi.14414)

2019

• VanDrisse, CM, and JC Escalante-Semerena.. Protein Acetylation in Bacteria. Annu. Rev. Microbiol. 2019 73(), 111-132 (DOI: 10.1146/annurev-micro-020518-115526)
• Tavares, NK, N. Stracey, TC Brunold, JC Escalante-Semerena.The The L-Thr kinase/L-Thr-phosphate decarboxylase (CobD) enzyme from Methanosarcina mazei Gö1 contains metallocenters needed for optimal activity Biochemistry 2019 In press(), (DOI: 10.1021/acs.biochem.9b00268)
• Burckhardt, RM, BA Buckner, JC Escalante-Semerena.. Staphylococcus aureus modulates the activity of acetyl-Coenzyme A synthetase (Acs) by sirtuin-dependent reversible lysine acetylation Mol. Microbiol. 2019 112(2), 588-604 (DOI: 10.1111/mmi.14276)
• Burckhardt, RM, JC Escalante-Semerena.. Insights into the function of the N-acetyltransferase SatA that detoxifies streptothricin in Bacillus subtilis and Bacillus anthracis Appl. Environ. Microbiol. 2019 85(6), e03029-18 (DOI: 10.1128/AEM.03029-18)
• Jeter, VL, TA Mattes, NR Beattie, JC Escalante-Semerena.. A new class of phosphoribosyltransferase involved in cobamide biosynthesis is found in methanogenic archaea and cyanobacteria Biochemistry 2019 58(7), 951-964 (DOI: https://doi.org/10.1021/acs.biochem.8b01253)

2018

• VanDrisse, CM, and JC Escalante-Semerena.In Salmonella enterica, OatA (formerly YjgM) uses O-acetyl-Serine and Acetyl-CoA to synthesize N,O-diacetylserine, which upregulates cysteine biosynthesis Front. Microbiol. 2018 9(), 2838 (DOI: 10.3389/fmicb.2018.02838)
• VanDrisse, CM, JC Escalante-Semerena.. Small-molecule acetylation controls the degradation of benzoate and photosynthesis in Rhodopseudomonas palustris mBio 2018 9(5), e01895-18 (DOI: 10.1128/mBio.01895-18)
• Tavares, NK, CM VanDrisse, JC Escalante-Semerena.. Rhodobacterales use a unique L-threonine kinase for the assembly of the nucleotide loop of coenzyme B12 Mol. Microbiol. 2018 110(2), 239-261 (DOI: 10.1111/mmi.14100)
• Costa, FG, JC Escalante-Semerena.. A new class of EutT ATP:Co(I)rrinoid adenosyltransferases found in Listeria monocytogenes and other Firmicutes does not require a metal ion for activity Biochemisrty 2018 57(34), 5076-5087 (DOI: 10.1021/acs.biochem.8b00715)
• Stracey, N., FG Costa, JC Escalante-Semerena, TC. Brunold.. Spectroscopic study of the EutT adenosyltransferase from Listeria monocytogenes: Evidence for the formation of a four-coordinate cob(II)alamin intermediate Biochemistry 2018 57(34), 5088-5095 (DOI: 10.1021/acs.biochem.8b00743)
• Mattes, TA, and JC Escalante-Semerena.. Facile isolation of alpha-ribazole from vitamin B12 hydrolysates using boronate affinity chromatography J. Chromatog. B Analyt. Technol. Biomed. Life Sci. 2018 1090(), 52-55 (DOI: 10.1016/j.jchromb.2018.05.022)
• Tavares, NK, CL Zayas, and JC Escalante-Semerena. . The Methanosarcina mazei MM2060 gene encodes a bifunctional kinase/decarboxylase enzyme involved in cobamide biosynthesis Biochemistry 2018 57(30), 4478-4495 (DOI: 10.1021/acs.biochem.8b00546)
• VanDrisse, CM, JC Escalante-Semerena.. In Streptomyces lividans, acetyl-CoA synthetase activity is controlled by O-serine and N(epsilon) acetylation Mol. Microbiol. 2018 107(4), 577-594 (DOI: 10.1111/mmi.13901)

2017

• Rocco, CJ, KM Wetterhorn, GS Garvey, I Rayment, JC Escalante-Semerena.The PrpF protein of Shewanella oneidensis MR-1 catalyzes the isomerization of 2-methyl-cis-aconitate during the catabolism of propionate via the AcnD-dependent 2-methylcitric acid cycle PLOS ONE 2017 12(), e0188130 (DOI: 10.1371/journal.pone.0188130)
• Mattes, TA, E Deery, MJ Warren, JC Escalante-Semerena.Cobalamin Biosynthesis and Insertion Encyclopedia of Inorganic and Bioinorganic Chemistry 2017 2017(), 1-24 (DOI: 10.1002/9781119951438.eibc2489)
• Burckhardt, RM, JC Escalante-Semerena.. In Bacillus subtilis, the SatA (formerly YyaR) acetyltransferase detoxifies streptothricin via lysine acetylation Appl. Environ. Microbiol. 2017 83(21), e01590-17 (DOI: 10.1128/AEM.01590-17)
• VanDrisse CM, AR Parks, JC Escalante-Semerena.. A toxin involved in Salmonella persistence regulates its activity by acetylating its cognate antitoxin, a modification reversed by CobB sirtuin deacetylase mBio 2017 8(3), e00708-17 (DOI: https://doi.org/ 10.1128/mBio.00708-17 )
• Pallares, IG, TC Moore, JC Escalante-Semerena, TC Brunold.. Spectroscopic studies of the EutT adenosyltransferase from Salmonella enterica: Evidence of a tetrathydrally coordinated transition metal cofactor with cysteine ligation Biochemistry 2017 56(2), 364-375 (DOI: 10.1021/acs.biochem.6b00750)
• Mattes, TA, JC Escalante-Semerena.. Salmonella enterica synthesizes 5,6-dimethylbenzimidazolyl-(DMB)-α-riboside. Why some Firmicutes do not require the canonical DMB activation system to synthesize adenosylcobalamin Mol. Microbiol. 2017 103(2), 269-281 (DOI: 10.1111/mmi.13555)
• Tavares, NK, JC Escalante-Semerena.. A snapshot of evolution in action: emergence of new heme transport function derived from a coenzyme B12 biosynthetic enzyme Environ. Microbiol. 2017 19(1), 8-10 (DOI: 10.1111/1462-2920.13517)

2016

• VanDrisse, CM, KL Hentchel, JC Escalante-Semerena.. Identification of phosphinothricin acetyltransferases using in vivo, in vitro and bioinformatics analyses. Appl. Environ. Microbiol. 2016 82(24), 7041-7051 (DOI: 10.1128/AEM.02604-16)
• Park, K, PE Mera, JC Escalante-Semerena, TC Brunold.. Resonance Raman spectroscopic study of the interaction between Co(II)rrinoids and the ATP:Corrinoid adenosyltransferase PduO from Lactobacillus reuteri J. Biol. Inorg. Chem. 2016 21(5-6), 669-681 (DOI: 10.1007/s00775-016-1371-x)
• VanDrisse, CM, JC Escalante-Semerena.. New high-cloning-efficiency vectors for complementation studies and recombinant protein overproduction in Escherichia coli and Salmonella enterica Plasmid 2016 86(2016), 1-6 (DOI: 10.1016/j.plasmid.2016.05.001)
• Pallares, IG, TC Moore, JC Escalante-Semerena, TC Brunold.. Spectroscopic studies of the EutT adenosyltransferase from Salmonella enterica: Mechanism of four coordinate Co(II)Cbl formation J. Am. Chem. Soc. 2016 138(11), 3694-3704 (DOI: 10.1021/jacs.5b11708)
• Moore, TC, and JC Escalante-Semerena. . The EutQ and EutP proteins are novel acetate kinases involved in ethanolamine catabolism: Physiological implications for the function of the ethanolamine metabolosome in Salmonella enterica Mol. Microbiol. 2016 99(3), 497-511 (DOI: 10.1111/mmi.13243)

2015

• Hentchel, KL., and JC Escalante-Semerena.Complex regulation of the sirtuin-dependent reversible lysine acetylation system of Salmonella enterica Microbial Cell 2015 2(11), 451-453 (DOI: 10.15698/mic2015.11.239)
• Singarapu, KS, M Otte, M Tonelli, WM Westler, JC Escalante-Semerena, JL Markley. Solution structural studies of GTP:adenosylcobinamide-phosphateguanylyltransferase (CobY) from Methanocaldococcus jannaschii PLOS ONE 2015 10(10), e0141297 (DOI: 10.1371/journal.pone.0141297)
• Hentchel, K. L., and J. C. Escalante-Semerena.. Acylation of biomolecules in prokaryotes: a widespread strategy for the control of biological function and metabolic stress Microbiology and Molecular Biology Reviews 2015 79(3), 321-346 (DOI: 10.1128/MMBR.00020-15)
• Hentchel, K.L., S. Thao, P. J. Intile, and J. C. Escalante-Semerena.. Deciphering the regulatory circuitry that controls reversible lysine acetylation in Salmonella enterica mBio 2015 6(4), e00891-15 (DOI: 10.1128/mBio.00891-15)
• Stuecker, TN, S Bramhacharya, KM Hodge-Hanson, G.Suen, JC Escalante-Semerena. Phylogenetic and amino acid conservation analyses of bacterial L-aspartate-α-decarboxylase and of its zymogen-maturation protein reveal a putative interaction domain BMC Research Notes 2015 8(), 354 (DOI: 10.1186/s13104-015-1314-6)
• Park, K., P. E. Mera, T. C. Moore, J. C. Escalante-Semerena, and T. C. Brunold. . Unprecedented mechanism employed by the Salmonella enterica EutT ATP:Co(I)rrinoid adenosyltransferase precludes adenosylation of incomplete Co(II)rrinoids Angewandte Chemie 2015 54(24), 7158-7161
• Mitchell, C. A., A. C. Tucker, J. C. Escalante-Semerena, and A. M. Gulick. The structure of S. lividans acetoacetyl-CoA synthetase shows a novel interaction between the C-terminal extension and the N-terminal domain Proteins 2015 83(3), 575-581
• Hentchel, K. L., and J. C. Escalante-Semerena. In Salmonella enterica, the Gcn5-related acetyltransferase MddA (formerly YncA) acetylates methionine sulfoximine and methionine sulfone, blocking their toxic effects J. Bacteriol. 2015 197(2), 314-325

2014

• Tucker, A. C., K. A. Taylor, K. C. Rank, I. Rayment, and J. C. Escalante-Semerena. Insights into the specificity of lysine acetyltransferases J. Biol. Chem. 2014 289(52), 36249-26262
• Pallares, IG, TC Moore, JC Escalante-Semerena, TC Brunold. Sprectoscopic studies of the Salmonella enterica adenosyltransferase enzyme SeCobA: Molecular insight into the mechanism of substrate cob(II)alamin activation Biochemistry 2014 53(), 7969-7982
• You, D, L-L Yao, D Huang, JC Escalante-Semerena, B-C Ye. Acetyl-CoA synthetase is acetylated on multiple lysine residues by a protein acetyltransferase with single GNAT domain in Saccharopolyspora erythraea J. Bacteriol. 2014 196(17), 3169-317824957627
• Tucker, AC, & JC Escalante-Semerena. Determinants within the C-terminal domain of Streptomyces lividans acetyl-CoA synthetase that block acetylation of its active site lysine in vitro by the protein acetyltransferase (Pat) enzyme PLOS ONE 2014 9(6), e99817
• Moore, T C, PE Mera, & JC Escalante-Semerena. The EutT enzyme of Salmonella enterica is a unique ATP:Cob(I)alamin adenosyltransferase metalloprotein that requires ferrous ions for maximal activity J. Bacteriol. 2014 196(4), 903-910
• Crosby, HA & JC Escalante-Semerena. The acetylation motif in AMP-forming acyl-CoA synthetases contains residues critical for acetylation and recognition by the protein acetyltransferase Pat of Rhodopseudomonas palustris J. Bacteriol. 2014 196(8), 1496-1504
• Chan, CH. Dissecting cobamide diversity through structural and functional analyses of the base-activating CobT enzyme of Salmonella enterica Biophys. Biochim. Acta 2014 1840(1), 464-475

2013

• Collins, H. et al. Bacillus megaterium has both a functional BluB protein required for DMB synthesis and a related flavoprotein that forms a stable radical species PLOS ONE 2013 8(), e55708
• Tucker, AC & Escalante-Semerena, JC. Acetoacetyl-CoA synthetase activity is controlled by a protein acetyltransferase with unique domain organization in Streptomyces lividans Mol. Microbiol. 2013 87(1), 152-167

2012

• Crosby, HA et al. Structural Insights into the Substrate Specificity of the Rhodopseudomonas palustris Protein Acetyltransferase RpPat. Identification of a loop critical for recognition by RpPat Journal of Biological Chemistry 2012 287(49), 41392-41404
• Moore, TC et al. Structural insights into the mechanism of four-coordinate cob(II)alamin formation in the active site of the Salmonella enterica ATP:co(I)rrinoid adenosyltransferase (CobA) enzyme: Critical role of residues Phe91 and Trp93 Biochemistry 2012 51(48), 9647-9657
• Newmister SA, Chan CH, Escalante-Semerena JC, Rayment I. Structural insights into the function of the nicotinate mononucleotide:phenol/p-cresol phosphoribosyltransferase (ArsAB) enzyme from Sporomusa ovata. Biochemistry 2012 51(43), 8571-82
• Crosby HA, Rank KC, Rayment I, Escalante-Semerena JC. Structure-Guided Expansion of the Substrate Range of Methylmalonyl Coenzyme A Synthetase (MatB) of Rhodopseudomonas palustris. Appl. Environ. Microbiol. 2012 78(18), 6619-29
• Crosby HA, Pelletier DA, Hurst GB, Escalante-Semerena JC. System-wide studies of N-lysine acetylation in Rhodopseudomonas palustris reveal substrate specificity of protein acetyltransferases. J. Biol. Chem. 2012 287(19), 15590-601
• Stuecker TN, Hodge KM, Escalante-Semerena JC. The missing link in coenzyme A biosynthesis: PanM (formerly YhhK), a yeast GCN5 acetyltransferase homologue triggers aspartate decarboxylase (PanD) maturation in Salmonella enterica. Mol. Microbiol. 2012 84(4), 608-19
• Stuecker TN, Tucker AC, Escalante-Semerena JC. PanM, an acetyl-coenzyme A sensor required for maturation of L-aspartate decarboxylase (PanD). MBio 2012 3(4),
• Park K, Mera PE, Escalante-Semerena JC, Brunold TC. Spectroscopic characterization of active-site variants of the PduO-type ATP:corrinoid adenosyltransferase from Lactobacillus reuteri: insights into the mechanism of four-coordinate Co(II)corrinoid formation. Inorg Chem 2012 51(8), 4482-94
• Thao S, Escalante-Semerena JC. A positive selection approach identifies residues important for folding of Salmonella enterica Pat, an N(ε)-lysine acetyltransferase that regulates central metabolism enzymes. Res. Microbiol. 2012 163(6-7), 427-35

2011

• Newmister SA, Otte MM, Escalante-Semerena JC, Rayment I. Structure and mutational analysis of the archaeal GTP:AdoCbi-P guanylyltransferase (CobY) from Methanocaldococcus jannaschii: insights into GTP binding and dimerization. Biochemistry 2011 50(23), 5301-13
• Chan CH, Garrity J, Crosby HA, Escalante-Semerena JC. In Salmonella enterica, the sirtuin-dependent protein acylation/deacylation system (SDPADS) maintains energy homeostasis during growth on low concentrations of acetate. Mol. Microbiol. 2011 80(1), 168-83
• Thao S, Escalante-Semerena JC. Control of protein function by reversible Nɛ-lysine acetylation in bacteria. Curr. Opin. Microbiol. 2011 14(2), 200-4
• Thao S, Escalante-Semerena JC. Biochemical and thermodynamic analyses of Salmonella enterica Pat, a multidomain, multimeric N(ε)-lysine acetyltransferase involved in carbon and energy metabolism. MBio 2011 2(5),
• Chan CH, Escalante-Semerena JC. ArsAB, a novel enzyme from Sporomusa ovata activates phenolic bases for adenosylcobamide biosynthesis. Mol. Microbiol. 2011 81(4), 952-67
• Bheda P, Wang JT, Escalante-Semerena JC, Wolberger C. Structure of Sir2Tm bound to a propionylated peptide. Protein Sci. 2011 20(1), 131-139

2010

• Claas KR, Parrish JR, Maggio-Hall LA, Escalante-Semerena JC. Functional analysis of the nicotinate mononucleotide:5,6-dimethylbenzimidazole phosphoribosyltransferase (CobT) enzyme, involved in the late steps of coenzyme B12 biosynthesis in Salmonella enterica. J. Bacteriol. 2010 192(1), 145-154
• Gray MJ, Escalante-Semerena JC. A new pathway for the synthesis of α-ribazole-phosphate in Listeria innocua. Mol. Microbiol. 2010 77(6), 1429-38
• Tucker AC, Escalante-Semerena JC. Biologically active isoforms of CobB sirtuin deacetylase in Salmonella enterica and Erwinia amylovora. J. Bacteriol. 2010 192(23), 6200-8
• Crosby HA, Heiniger EK, Harwood CS, Escalante-Semerena JC. Reversible N epsilon-lysine acetylation regulates the activity of acyl-CoA synthetases involved in anaerobic benzoate catabolism in Rhodopseudomonas palustris. Mol. Microbiol. 2010 76(4), 874-88
• Mera PE, Escalante-Semerena JC. Dihydroflavin-driven adenosylation of 4-coordinate Co(II) corrinoids: are cobalamin reductases enzymes or electron transfer proteins? J. Biol. Chem. 2010 285(5), 2911-2917
• Mera PE, Escalante-Semerena JC. Multiple roles of ATP:cob(I)alamin adenosyltransferases in the conversion of B12 to coenzyme B12. Appl. Microbiol. Biotechnol. 2010 88(1), 41-8
• Rocco CJ, Escalante-Semerena JC. In Salmonella enterica, 2-methylcitrate blocks gluconeogenesis. J. Bacteriol. 2010 192(3), 771-778
• Thao S, Chen CS, Zhu H, Escalante-Semerena JC. Nε-lysine acetylation of a bacterial transcription factor inhibits Its DNA-binding activity. PLoS ONE 2010 5(12), e15123

2009

• Mera PE, St Maurice M, Rayment I, Escalante-Semerena JC. Residue Phe112 of the human-type corrinoid adenosyltransferase (PduO) enzyme of Lactobacillus reuteri is critical to the formation of the four-coordinate Co(II) corrinoid substrate and to the activity of the enzyme. Biochemistry 2009 48(14), 3138-3145
• Otte MM, Escalante-Semerena JC. Biochemical characterization of the GTP:adenosylcobinamide-phosphate guanylyltransferase (CobY) enzyme of the hyperthermophilic archaeon Methanocaldococcus jannaschii. Biochemistry 2009 48(25), 5882-5889
• Gray MJ, Escalante-Semerena JC. The cobinamide amidohydrolase (cobyric acid-forming) CbiZ enzyme: a critical activity of the cobamide remodelling system of Rhodobacter sphaeroides. Mol. Microbiol. 2009 74(5), 1198-210
• Gray MJ, Escalante-Semerena JC. In vivo analysis of cobinamide salvaging in Rhodobacter sphaeroides strain 2.4.1. J. Bacteriol. 2009 191(12), 3842-3851
• Lewis JA, Boyd JM, Downs DM, Escalante-Semerena JC. Involvement of the Cra global regulatory protein in the expression of the iscRSUA operon, revealed during studies of tricarballylate catabolism in Salmonella enterica. J. Bacteriol. 2009 191(7), 2069-2076
• Lewis JA, Stamper LW, Escalante-Semerena JC. Regulation of expression of the tricarballylate utilization operon (tcuABC) of Salmonella enterica. Res. Microbiol. 2009 160(3), 179-186
• Gardner JG, Escalante-Semerena JC. In Bacillus subtilis, the sirtuin protein deacetylase, encoded by the srtN gene (formerly yhdZ), and functions encoded by the acuABC genes control the activity of acetyl coenzyme A synthetase. J. Bacteriol. 2009 191(6), 1749-1755

2008

• St Maurice M, Mera P, Park K, Brunold TC, Escalante-Semerena JC, Rayment I. Structural characterization of a human-type corrinoid adenosyltransferase confirms that coenzyme B12 is synthesized through a four-coordinate intermediate. Biochemistry 2008 47(21), 5755-5766
• Rocco CJ, Dennison KL, Klenchin VA, Rayment I, Escalante-Semerena JC. Construction and use of new cloning vectors for the rapid isolation of recombinant proteins from Escherichia coli. Plasmid 2008 59(3), 231-237
• Park K, Mera PE, Escalante-Semerena JC, Brunold TC. Kinetic and spectroscopic studies of the ATP:corrinoid adenosyltransferase PduO from Lactobacillus reuteri: substrate specificity and insights into the mechanism of Co(II)corrinoid reduction. Biochemistry 2008 47(34), 9007-9015
• Gray MJ, Tavares NK, Escalante-Semerena JC. The genome of Rhodobacter sphaeroides strain 2.4.1 encodes functional cobinamide salvaging systems of archaeal and bacterial origins. Mol. Microbiol. 2008 70(4), 824-836
• Ruiz-Sánchez P, Mundwiler S, Spingler B, Buan NR, Escalante-Semerena JC, Alberto R. Syntheses and characterization of vitamin B12-Pt(II) conjugates and their adenosylation in an enzymatic assay. J. Biol. Inorg. Chem. 2008 13(3), 335-347
• Gardner JG, Escalante-Semerena JC. Biochemical and mutational analyses of AcuA, the acetyltransferase enzyme that controls the activity of the acetyl coenzyme a synthetase (AcsA) in Bacillus subtilis. J. Bacteriol. 2008 190(14), 5132-5136
• Boyd JM, Lewis JA, Escalante-Semerena JC, Downs DM. Salmonella enterica requires ApbC function for growth on tricarballylate: evidence of functional redundancy between ApbC and IscU. J. Bacteriol. 2008 190(13), 4596-4602

2007

• Mera PE, St Maurice M, Rayment I, Escalante-Semerena JC. Structural and functional analyses of the human-type corrinoid adenosyltransferase (PduO) from Lactobacillus reuteri. Biochemistry 2007 46(48), 13829-13836
• Garvey GS, Rocco CJ, Escalante-Semerena JC, Rayment I. The three-dimensional crystal structure of the PrpF protein of Shewanella oneidensis complexed with trans-aconitate: insights into its biological function. Protein Sci. 2007 16(7), 1274-1284
• St Maurice M, Mera PE, Taranto MP, Sesma F, Escalante-Semerena JC, Rayment I. Structural characterization of the active site of the PduO-type ATP:Co(I)rrinoid adenosyltransferase from Lactobacillus reuteri. J. Biol. Chem. 2007 282(4), 2596-2605
• Escalante-Semerena JC. Conversion of cobinamide into adenosylcobamide in bacteria and archaea. J. Bacteriol. 2007 189(13), 4555-4560
• Lewis JA, Escalante-Semerena JC. Tricarballylate catabolism in Salmonella enterica. The TcuB protein uses 4Fe-4S clusters and heme to transfer electrons from FADH2 in the tricarballylate dehydrogenase (TcuA) enzyme to electron acceptors in the cell membrane. Biochemistry 2007 46(31), 9107-9115
• Brinsmade SR, Escalante-Semerena JC. In vivo and in vitro analyses of single-amino acid variants of the Salmonella enterica phosphotransacetylase enzyme provide insights into the function of its N-terminal domain. J. Biol. Chem. 2007 282(17), 12629-12640
• Zayas CL, Escalante-Semerena JC. Reassessment of the late steps of coenzyme B12 synthesis in Salmonella enterica: evidence that dephosphorylation of adenosylcobalamin-5'-phosphate by the CobC phosphatase is the last step of the pathway. J. Bacteriol. 2007 189(6), 2210-2218
• Gray MJ, Escalante-Semerena JC. Single-enzyme conversion of FMNH2 to 5,6-dimethylbenzimidazole, the lower ligand of B12. Proc. Natl. Acad. Sci. U.S.A. 2007 104(8), 2921-2916
• Zayas CL, Claas K, Escalante-Semerena JC. The CbiB protein of Salmonella enterica is an integral membrane protein involved in the last step of the de novo corrin ring biosynthetic pathway. J. Bacteriol. 2007 189(21), 7697-7708
• Garrity J, Gardner JG, Hawse W, Wolberger C, Escalante-Semerena JC. N-lysine propionylation controls the activity of propionyl-CoA synthetase. J. Biol. Chem. 2007 282(41), 30239-30245
• Otte MM, Woodson JD, Escalante-Semerena JC. The thiamine kinase (YcfN) enzyme plays a minor but significant role in cobinamide salvaging in Salmonella enterica. J. Bacteriol. 2007 189(20), 7310-7315

2006

• Gardner JG, Grundy FJ, Henkin TM, Escalante-Semerena JC. Control of acetyl-coenzyme A synthetase (AcsA) activity by acetylation/deacetylation without NAD(+) involvement in Bacillus subtilis. J. Bacteriol. 2006 188(15), 5460-5468
• Buan NR, Escalante-Semerena JC. Purification and initial biochemical characterization of ATP:Cob(I)alamin adenosyltransferase (EutT) enzyme of Salmonella enterica. J. Biol. Chem. 2006 281(25), 16971-16977
• Zayas CL, Woodson JD, Escalante-Semerena JC. The cobZ gene of Methanosarcina mazei Go1 encodes the nonorthologous replacement of the alpha-ribazole-5'-phosphate phosphatase (CobC) enzyme of Salmonella enterica. J. Bacteriol. 2006 188(7), 2740-2743
• Buan NR, Rehfeld K, Escalante-Semerena JC. Studies of the CobA-type ATP:Co(I)rrinoid adenosyltransferase enzyme of Methanosarcina mazei strain Go1. J. Bacteriol. 2006 188(10), 3543-50
• Woodson JD, Escalante-Semerena JC. The cbiS gene of the archaeon Methanopyrus kandleri AV19 encodes a bifunctional enzyme with adenosylcobinamide amidohydrolase and alpha-ribazole-phosphate phosphatase activities. J. Bacteriol. 2006 188(12), 4227-4235
• Lewis JA, Escalante-Semerena JC. The FAD-dependent tricarballylate dehydrogenase (TcuA) enzyme of Salmonella enterica converts tricarballylate into cis-aconitate. J. Bacteriol. 2006 188(15), 5479-5486

2005

• Buan NR, Escalante-Semerena JC. Computer-assisted docking of flavodoxin with the ATP:Co(I)rrinoid adenosyltransferase (CobA) enzyme reveals residues critical for protein-protein interactions but not for catalysis. J. Biol. Chem. 2005 280(49), 40948-40956
• Starai VJ, Gardner JG, Escalante-Semerena JC. Residue Leu-641 of Acetyl-CoA synthetase is critical for the acetylation of residue Lys-609 by the Protein acetyltransferase enzyme of Salmonella enterica. J. Biol. Chem. 2005 280(28), 26200-26205
• Brinsmade SR, Paldon T, Escalante-Semerena JC. Minimal functions and physiological conditions required for growth of salmonella enterica on ethanolamine in the absence of the metabolosome. J. Bacteriol. 2005 187(23), 8039-8046
• Stich TA, Buan NR, Escalante-Semerena JC, Brunold TC. Spectroscopic and computational studies of the ATP:corrinoid adenosyltransferase (CobA) from Salmonella enterica: insights into the mechanism of adenosylcobalamin biosynthesis. J. Am. Chem. Soc. 2005 127(24), 8710-8719
• Starai VJ, Garrity J, Escalante-Semerena JC. Acetate excretion during growth of Salmonella enterica on ethanolamine requires phosphotransacetylase (EutD) activity, and acetate recapture requires acetyl-CoA synthetase (Acs) and phosphotransacetylase (Pta) activities. Microbiology (Reading, Engl.) 2005 151(Pt 11), 3793-3801
• Woodson JD, Reynolds AA, Escalante-Semerena JC. ABC transporter for corrinoids in Halobacterium sp. strain NRC-1. J. Bacteriol. 2005 187(17), 5901-5909

2004

• Woodson JD, Escalante-Semerena JC. CbiZ, an amidohydrolase enzyme required for salvaging the coenzyme B12 precursor cobinamide in archaea. Proc. Natl. Acad. Sci. U.S.A. 2004 101(10), 3591-6
• Starai VJ, Escalante-Semerena JC. Acetyl-coenzyme A synthetase (AMP forming). Cell. Mol. Life Sci. 2004 61(16), 2020-30
• Grimek TL, Escalante-Semerena JC. The acnD genes of Shewenella oneidensis and Vibrio cholerae encode a new Fe/S-dependent 2-methylcitrate dehydratase enzyme that requires prpF function in vivo. J. Bacteriol. 2004 186(2), 454-462
• Palacios S, Escalante-Semerena JC. 2-Methylcitrate-dependent activation of the propionate catabolic operon (prpBCDE) of Salmonella enterica by the PrpR protein. Microbiology (Reading, Engl.) 2004 150(Pt 11), 3877-3887
• Lewis JA, Horswill AR, Schwem BE, Escalante-Semerena JC. The Tricarballylate utilization (tcuRABC) genes of Salmonella enterica serovar Typhimurium LT2. J. Bacteriol. 2004 186(6), 1629-1637
• Brinsmade SR, Escalante-Semerena JC. The eutD gene of Salmonella enterica encodes a protein with phosphotransacetylase enzyme activity. J. Bacteriol. 2004 186(6), 1890-2
• Starai VJ, Takahashi H, Boeke JD, Escalante-Semerena JC. A link between transcription and intermediary metabolism: a role for Sir2 in the control of acetyl-coenzyme A synthetase. Curr. Opin. Microbiol. 2004 7(2), 115-119
• Starai VJ, Escalante-Semerena JC. Identification of the protein acetyltransferase (Pat) enzyme that acetylates acetyl-CoA synthetase in Salmonella enterica. J. Mol. Biol. 2004 340(5), 1005-12
• Maggio-Hall LA, Claas KR, Escalante-Semerena JC. The last step in coenzyme B(12) synthesis is localized to the cell membrane in bacteria and archaea. Microbiology (Reading, Engl.) 2004 150(Pt 5), 1385-1395
• Buan NR, Suh SJ, Escalante-Semerena JC. The eutT gene of Salmonella enterica Encodes an oxygen-labile, metal-containing ATP:corrinoid adenosyltransferase enzyme. J. Bacteriol. 2004 186(17), 5708-5714

2003

• Grimek TL, Holden H, Rayment I, Escalante-Semerena JC. Residues C123 and D58 of the 2-methylisocitrate lyase (PrpB) enzyme of Salmonella enterica are essential for catalysis. J. Bacteriol. 2003 185(16), 4837-4843
• Maggio-Hall LA, Escalante-Semerena JC. Alpha-5,6-dimethylbenzimidazole adenine dinucleotide (alpha-DAD), a putative new intermediate of coenzyme B12 biosynthesis in Salmonella typhimurium. Microbiology (Reading, Engl.) 2003 149(Pt 4), 983-990
• Woodson JD, Peck RF, Krebs MP, Escalante-Semerena JC. The cobY gene of the archaeon Halobacterium sp. strain NRC-1 is required for de novo cobamide synthesis. J. Bacteriol. 2003 185(1), 311-316
• Maggio-Hall LA, Dorrestein PC, Escalante-Semerena JC, Begley TP. Formation of the dimethylbenzimidazole ligand of coenzyme B(12) under physiological conditions by a facile oxidative cascade. Org. Lett. 2003 5(13), 2211-2213
• Gulick AM, Starai VJ, Horswill AR, Homick KM, Escalante-Semerena JC. The 1.75 A crystal structure of acetyl-CoA synthetase bound to adenosine-5'-propylphosphate and coenzyme A. Biochemistry 2003 42(10), 2866-2873
• Woodson JD, Zayas CL, Escalante-Semerena JC. A new pathway for salvaging the coenzyme B12 precursor cobinamide in archaea requires cobinamide-phosphate synthase (CbiB) enzyme activity. J. Bacteriol. 2003 185(24), 7193-7201
• Starai VJ, Takahashi H, Boeke JD, Escalante-Semerena JC. Short-chain fatty acid activation by acyl-coenzyme A synthetases requires SIR2 protein function in Salmonella enterica and Saccharomyces cerevisiae. Genetics 2003 163(2), 545-555
• Palacios S, Starai VJ, Escalante-Semerena JC. Propionyl coenzyme A is a common intermediate in the 1,2-propanediol and propionate catabolic pathways needed for expression of the prpBCDE operon during growth of Salmonella enterica on 1,2-propanediol. J. Bacteriol. 2003 185(9), 2802-2810

2002

• Cheong CG, Escalante-Semerena JC, Rayment I. Capture of a labile substrate by expulsion of water molecules from the active site of nicotinate mononucleotide:5,6-dimethylbenzimidazole phosphoribosyltransferase (CobT) from Salmonella enterica. J. Biol. Chem. 2002 277(43), 41120-41127
• Cheong CG, Bauer CB, Brushaber KR, Escalante-Semerena JC, Rayment I. Three-dimensional structure of the L-threonine-O-3-phosphate decarboxylase (CobD) enzyme from Salmonella enterica. Biochemistry 2002 41(15), 4798-808
• Cheong CG, Escalante-Semerena JC, Rayment I. Structural studies of the L-threonine-O-3-phosphate decarboxylase (CobD) enzyme from Salmonella enterica: the apo, substrate, and product-aldimine complexes. Biochemistry 2002 41(29), 9079-9089
• Fonseca MV, Buan NR, Horswill AR, Rayment I, Escalante-Semerena JC. The ATP:Co(I)rrinoid adenosyltransferase (CobA) enzyme of Salmonella enterica requires the 2'-OH group of ATP for function and yields inorganic triphosphate as its reaction byproduct. J. Biol. Chem. 2002 277(36), 33127-33131
• Gulick AM, Horswill AR, Thoden JB, Escalante-Semerena JC, Rayment I. Pentaerythritol propoxylate: a new crystallization agent and cryoprotectant induces crystal growth of 2-methylcitrate dehydratase. Acta Crystallogr. D Biol. Crystallogr. 2002 58(Pt 2), 306-309
• Horswill AR, Escalante-Semerena JC. Characterization of the propionyl-CoA synthetase (PrpE) enzyme of Salmonella enterica: residue Lys592 is required for propionyl-AMP synthesis. Biochemistry 2002 41(7), 2379-2387
• Starai VJ, Celic I, Cole RN, Boeke JD, Escalante-Semerena JC. Sir2-dependent activation of acetyl-CoA synthetase by deacetylation of active lysine. Science 2002 298(5602), 2390-2392
• Warren MJ, Raux E, Schubert HL, Escalante-Semerena JC. The biosynthesis of adenosylcobalamin (vitamin B12). Nat Prod Rep 2002 19(4), 390-412

2001

• Bauer CB, Fonseca MV, Holden HM, Thoden JB, Thompson TB, Escalante-Semerena JC, Rayment I. Three-dimensional structure of ATP:corrinoid adenosyltransferase from Salmonella typhimurium in its free state, complexed with MgATP, or complexed with hydroxycobalamin and MgATP. Biochemistry 2001 40(2), 361-74
• Cheong CG, Escalante-Semerena JC, Rayment I. Structural investigation of the biosynthesis of alternative lower ligands for cobamides by nicotinate mononucleotide: 5,6-dimethylbenzimidazole phosphoribosyltransferase from Salmonella enterica. J. Biol. Chem. 2001 276(40), 37612-37620
• Horswill AR, Escalante-Semerena JC. In vitro conversion of propionate to pyruvate by Salmonella enterica enzymes: 2-methylcitrate dehydratase (PrpD) and aconitase Enzymes catalyze the conversion of 2-methylcitrate to 2-methylisocitrate. Biochemistry 2001 40(15), 4703-4713
• Chowdhury S, Thomas MG, Escalante-Semerena JC, Banerjee R. The coenzyme b12 analog 5'-deoxyadenosylcobinamide-gdp supports catalysis by methylmalonyl-coa mutase in the absence of trans-ligand coordination. J. Biol. Chem. 2001 276(2), 1015-1019
• Horswill AR, Dudding AR, Escalante-Semerena JC. Studies of propionate toxicity in Salmonella enterica identify 2-methylcitrate as a potent inhibitor of cell growth. J. Biol. Chem. 2001 276(22), 19094-19101
• Fonseca MV, Escalante-Semerena JC. An in vitro reducing system for the enzymic conversion of cobalamin to adenosylcobalamin. J. Biol. Chem. 2001 276(34), 32101-8

2000

• Thomas MG, Thompson TB, Rayment I, Escalante-Semerena JC. Analysis of the adenosylcobinamide kinase/adenosylcobinamide-phosphate guanylyltransferase (CobU) enzyme of Salmonella typhimurium LT2. Identification of residue His-46 as the site of guanylylation. J. Biol. Chem. 2000 275(36), 27576-27586
• Fonseca MV, Escalante-Semerena JC. Reduction of Cob(III)alamin to Cob(II)alamin in Salmonella enterica serovar typhimurium LT2. J. Bacteriol. 2000 182(15), 4304-9
• Thomas MG, Escalante-Semerena JC. Identification of an alternative nucleoside triphosphate: 5'-deoxyadenosylcobinamide phosphate nucleotidyltransferase in Methanobacterium thermoautotrophicum delta H. J. Bacteriol. 2000 182(15), 4227-33
• Smith JS, Brachmann CB, Celic I, Kenna MA, Muhammad S, Starai VJ, Avalos JL, Escalante-Semerena JC, Grubmeyer C, Wolberger C, Boeke JD. A phylogenetically conserved NAD+-dependent protein deacetylase activity in the Sir2 protein family. Proc. Natl. Acad. Sci. U.S.A. 2000 97(12), 6658-6663
• Palacios S, Escalante-Semerena JC. prpR, ntrA, and ihf functions are required for expression of the prpBCDE operon, encoding enzymes that catabolize propionate in Salmonella enterica serovar typhimurium LT2. J. Bacteriol. 2000 182(4), 905-910
• Downs DM, Escalante-Semerena JC. Impact of genomics and genetics on the elucidation of bacterial metabolism. Methods 2000 20(1), 47-54

1999

• Cheong CG, Escalante-Semerena JC, Rayment I. The three-dimensional structures of nicotinate mononucleotide:5,6- dimethylbenzimidazole phosphoribosyltransferase (CobT) from Salmonella typhimurium complexed with 5,6-dimethybenzimidazole and its reaction products determined to 1.9 A resolution. Biochemistry 1999 38(49), 16125-16135
• Thompson TB, Thomas MG, Escalante-Semerena JC, Rayment I. Three-dimensional structure of adenosylcobinamide kinase/adenosylcobinamide phosphate guanylyltransferase (CobU) complexed with GMP: evidence for a substrate-induced transferase active site. Biochemistry 1999 38(40), 12995-13005
• Maggio-Hall LA, Escalante-Semerena JC. In vitro synthesis of the nucleotide loop of cobalamin by Salmonella typhimurium enzymes. Proc. Natl. Acad. Sci. U.S.A. 1999 96(21), 11798-11803
• Horswill AR, Escalante-Semerena JC. The prpE gene of Salmonella typhimurium LT2 encodes propionyl-CoA synthetase. Microbiology (Reading, Engl.) 1999 145(), 1381-1388
• Horswill AR, Escalante-Semerena JC. Salmonella typhimurium LT2 catabolizes propionate via the 2-methylcitric acid cycle. J. Bacteriol. 1999 181(18), 5615-23
• Thomas MG, O'Toole GA, Escalante-Semerena JC. Molecular characterization of eutF mutants of Salmonella typhimurium LT2 identifies eutF lesions as partial-loss-of-function tonB alleles. J. Bacteriol. 1999 181(2), 368-374

1998

• Thompson TB, Thomas MG, Escalante-Semerena JC, Rayment I. Three-dimensional structure of adenosylcobinamide kinase/adenosylcobinamide phosphate guanylyltransferase from Salmonella typhimurium determined to 2.3 A resolution,. Biochemistry 1998 37(21), 7686-7695
• Tsang AW, Escalante-Semerena JC. CobB, a new member of the SIR2 family of eucaryotic regulatory proteins, is required to compensate for the lack of nicotinate mononucleotide:5,6-dimethylbenzimidazole phosphoribosyltransferase activity in cobT mutants during cobalamin biosynthesis in Salmonella typhimurium LT2. J. Biol. Chem. 1998 273(48), 31788-31794
• Tsang AW, Horswill AR, Escalante-Semerena JC. Studies of regulation of expression of the propionate (prpBCDE) operon provide insights into how Salmonella typhimurium LT2 integrates its 1,2-propanediol and propionate catabolic pathways. J. Bacteriol. 1998 180(24), 6511-6518
• Brushaber KR, O'Toole GA, Escalante-Semerena JC. CobD, a novel enzyme with L-threonine-O-3-phosphate decarboxylase activity, is responsible for the synthesis of (R)-1-amino-2-propanol O-2-phosphate, a proposed new intermediate in cobalamin biosynthesis in Salmonella typhimurium LT2. J. Biol. Chem. 1998 273(5), 2684-2691
• Rondon MR, Escalante-Semerena JC. High levels of transcription factor RpoS (sigma S) in mviA mutants negatively affect 1,2-propanediol-dependent transcription of the cob/pdu regulon of Salmonella typhimurium LT2. FEMS Microbiol. Lett. 1998 169(1), 147-153

1997

• Trzebiatowski JR, Escalante-Semerena JC. Purification and characterization of CobT, the nicotinate-mononucleotide:5,6-dimethylbenzimidazole phosphoribosyltransferase enzyme from Salmonella typhimurium LT2. J. Biol. Chem. 1997 272(28), 17662-17667
• Rondon MR, Trzebiatowski JR, Escalante-Semerena JC. Biochemistry and molecular genetics of cobalamin biosynthesis. Prog. Nucleic Acid Res. Mol. Biol. 1997 56(), 347-84
• Rondon MR, Escalante-Semerena JC. Integration host factor is required for 1,2-propanediol-dependent transcription of the cob/pdu regulon in Salmonella typhimurium LT2. J. Bacteriol. 1997 179(11), 3797-3800
• Horswill AR, Escalante-Semerena JC. Propionate catabolism in Salmonella typhimurium LT2: two divergently transcribed units comprise the prp locus at 8.5 centisomes, prpR encodes a member of the sigma-54 family of activators, and the prpBCDE genes constitute an operon. J. Bacteriol. 1997 179(3), 928-940

1996

• Tsang AW, Escalante-Semerena JC. cobB function is required for catabolism of propionate in Salmonella typhimurium LT2: evidence for existence of a substitute function for CobB within the 1,2-propanediol utilization (pdu) operon. J. Bacteriol. 1996 178(23), 7016-7019
• Rondon MR, Escalante-Semerena JC. In vitro analysis of the interactions between the PocR regulatory protein and the promoter region of the cobalamin biosynthetic (cob) operon of Salmonella typhimurium LT2. J. Bacteriol. 1996 178(8), 2196-2203
• Hammelman TA, O'Toole GA, Trzebiatowski JR, Tsang AW, Rank D, Escalante-Semerena JC. Identification of a new prp locus required for propionate catabolism in Salmonella typhimurium LT2. FEMS Microbiol. Lett. 1996 137(2-3), 233-239

1995

• O'Toole GA, Escalante-Semerena JC. Purification and characterization of the bifunctional CobU enzyme of Salmonella typhimurium LT2. Evidence for a CobU-GMP intermediate. J. Biol. Chem. 1995 270(40), 23560-23569
• Rondon MR, Horswill AR, Escalante-Semerena JC. DNA polymerase I function is required for the utilization of ethanolamine, 1,2-propanediol, and propionate by Salmonella typhimurium LT2. J. Bacteriol. 1995 177(24), 7119-7124
• Suh S, Escalante-Semerena JC. Purification and initial characterization of the ATP:corrinoid adenosyltransferase encoded by the cobA gene of Salmonella typhimurium. J. Bacteriol. 1995 177(4), 921-925
• Rondon MR, Kazmierczak R, Escalante-Semerena JC. Glutathione is required for maximal transcription of the cobalamin biosynthetic and 1,2-propanediol utilization (cob/pdu) regulon and for the catabolism of ethanolamine, 1,2-propanediol, and propionate in Salmonella typhimurium LT2. J. Bacteriol. 1995 177(19), 5434-5439

1994

• Trzebiatowski JR, O'Toole GA, Escalante-Semerena JC. The cobT gene of Salmonella typhimurium encodes the NaMN: 5,6-dimethylbenzimidazole phosphoribosyltransferase responsible for the synthesis of N1-(5-phospho-alpha-D-ribosyl)-5,6-dimethylbenzimidazole, an intermediate in the synthesis of the nucleotide loop of cobalamin. J. Bacteriol. 1994 176(12), 3568-3575
• O'Toole GA, Trzebiatowski JR, Escalante-Semerena JC. The cobC gene of Salmonella typhimurium codes for a novel phosphatase involved in the assembly of the nucleotide loop of cobalamin. J. Biol. Chem. 1994 269(42), 26503-26511

1993

• O'Toole GA, Escalante-Semerena JC. cobU-dependent assimilation of nonadenosylated cobinamide in cobA mutants of Salmonella typhimurium. J. Bacteriol. 1993 175(19), 6328-6336
• O'Toole GA, Rondon MR, Escalante-Semerena JC. Analysis of mutants of Salmonella typhimurium defective in the synthesis of the nucleotide loop of cobalamin. J. Bacteriol. 1993 175(11), 3317-3326
• Suh SJ, Escalante-Semerena JC. Cloning, sequencing and overexpression of cobA which encodes ATP:corrinoid adenosyltransferase in Salmonella typhimurium. Gene 1993 129(1), 93-97

1992

• Johnson MG, Escalante-Semerena JC. Identification of 5,6-dimethylbenzimidazole as the Co alpha ligand of the cobamide synthesized by Salmonella typhimurium. Nutritional characterization of mutants defective in biosynthesis of the imidazole ring. J. Biol. Chem. 1992 267(19), 13302-13305
• Escalante-Semerena JC, Johnson MG, Roth JR. The CobII and CobIII regions of the cobalamin (vitamin B12) biosynthetic operon of Salmonella typhimurium. J. Bacteriol. 1992 174(1), 24-29
• Rondon MR, Escalante-Semerena JC. The poc locus is required for 1,2-propanediol-dependent transcription of the cobalamin biosynthetic (cob) and propanediol utilization (pdu) genes of Salmonella typhimurium. J. Bacteriol. 1992 174(7), 2267-2672

1991

• O'Toole GA, Escalante-Semerena JC. Identification and initial characterization of the eutF locus of Salmonella typhimurium. J. Bacteriol. 1991 173(16), 5168-5172

1990

• Escalante-Semerena JC, Suh SJ, Roth JR. cobA function is required for both de novo cobalamin biosynthesis and assimilation of exogenous corrinoids in Salmonella typhimurium. J. Bacteriol. 1990 172(1), 273-280

1988

• Hartzell PL, Escalante-Semerena JC, Bobik TA, Wolfe RS. A simplified methylcoenzyme M methylreductase assay with artificial electron donors and different preparations of component C from Methanobacterium thermoautotrophicum delta H. J. Bacteriol. 1988 170(6), 2711-2715

1987

• Escalante-Semerena JC, Roth JR. Regulation of cobalamin biosynthetic operons in Salmonella typhimurium. J. Bacteriol. 1987 169(5), 2251-2258

1986

• Hartzell PL, Zvilius G, Escalante-Semerena JC, Donnelly MI. Coenzyme F420 dependence of the methylenetetrahydromethanopterin dehydrogenase of Methanobacterium thermoautotrophicum. Biochem. Biophys. Res. Commun. 1986 133(3), 884-90

1985

• Rouvière PE, Escalante-Semerena JC, Wolfe RS. Component A2 of the methylcoenzyme M methylreductase system from Methanobacterium thermoautotrophicum. J. Bacteriol. 1985 162(1), 61-66
• Escalante-Semerena JC, Wolfe RS. Tetrahydromethanopterin-dependent methanogenesis from non-physiological C1 donors in Methanobacterium thermoautotrophicum. J. Bacteriol. 1985 161(2), 696-701
• Donnelly MI, Escalante-Semerena JC, Rinehart KL, Wolfe RS. Methenyl-tetrahydromethanopterin cyclohydrolase in cell extracts of Methanobacterium. Arch. Biochem. Biophys. 1985 242(2), 430-9

1984

• Escalante-Semerena JC, Leigh JA, Rinehart KL, Wolfe RS. Formaldehyde activation factor, tetrahydromethanopterin, a coenzyme of methanogenesis. Proc. Natl. Acad. Sci. U.S.A. 1984 81(7), 1976-1980
• Escalante-Semerena JC, Rinehart KL, Wolfe RS. Tetrahydromethanopterin, a carbon carrier in methanogenesis. J. Biol. Chem. 1984 259(15), 9447-9455
• Escalante-Semerena JC, Wolfe RS. Formaldehyde oxidation and methanogenesis. J. Bacteriol. 1984 158(2), 721-726

1980

• Escalante-Semerena JC, Blakemore RP, Wolfe RS. Nitrate dissimilation under microaerophilic conditions by a magnetic spirillum. Appl. Environ. Microbiol. 1980 40(2), 429-430