Enzymes
| UniProtKB help_outline | 22,461 proteins |
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- Name help_outline adenosylcob(III)inamide-GDP Identifier CHEBI:60487 Charge -1 Formula C68H95CoN21O21P2 InChIKeyhelp_outline IQTYKHRKNGVJEO-RRMAJTJESA-K SMILEShelp_outline [H][C@@]12[C@H](CC(N)=O)[C@@](C)(CCC(=O)NC[C@@H](C)OP([O-])(=O)OP([O-])(=O)OC[C@H]3O[C@H]([C@H](O)[C@@H]3O)n3cnc4c3nc(N)[nH]c4=O)C3=C(C)C4=[N+]5C(=CC6=[N+]7C(=C(C)C8=[N+]([C@]1(C)[C@@](C)(CC(N)=O)[C@@H]8CCC(N)=O)[Co--]57(C[C@H]1O[C@H]([C@H](O)[C@@H]1O)n1cnc5c(N)ncnc15)N23)[C@@](C)(CC(N)=O)[C@@H]6CCC(N)=O)C(C)(C)[C@@H]4CCC(N)=O 2D coordinates Mol file for the small molecule Search links Involved in 3 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline α-ribazole Identifier CHEBI:10329 (Beilstein: 91101; CAS: 132-13-8) help_outline Charge 0 Formula C14H18N2O4 InChIKeyhelp_outline HLRUKOJSWOKCPP-SYQHCUMBSA-N SMILEShelp_outline Cc1cc2ncn([C@H]3O[C@H](CO)[C@@H](O)[C@H]3O)c2cc1C 2D coordinates Mol file for the small molecule Search links Involved in 2 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline adenosylcob(III)alamin Identifier CHEBI:18408 (Beilstein: 4122932; CAS: 13870-90-1) help_outline Charge 0 Formula C72H100CoN18O17P InChIKeyhelp_outline ZIHHMGTYZOSFRC-OUCXYWSSSA-L SMILEShelp_outline [H][C@]12[C@H](CC(N)=O)[C@@]3(C)CCC(=O)NC[C@@H](C)OP([O-])(=O)O[C@@H]4[C@@H](CO)O[C@@H]([C@@H]4O)n4c[n+](c5cc(C)c(C)cc45)[Co-3]456(C[C@H]7O[C@H]([C@H](O)[C@@H]7O)n7cnc8c(N)ncnc78)N1C3=C(C)C1=[N+]4C(=CC3=[N+]5C(=C(C)C4=[N+]6[C@]2(C)[C@@](C)(CC(N)=O)[C@@H]4CCC(N)=O)[C@@](C)(CC(N)=O)[C@@H]3CCC(N)=O)C(C)(C)[C@@H]1CCC(N)=O 2D coordinates Mol file for the small molecule Search links Involved in 7 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline GMP Identifier CHEBI:58115 Charge -2 Formula C10H12N5O8P InChIKeyhelp_outline RQFCJASXJCIDSX-UUOKFMHZSA-L SMILEShelp_outline Nc1nc2n(cnc2c(=O)[nH]1)[C@@H]1O[C@H](COP([O-])([O-])=O)[C@@H](O)[C@H]1O 2D coordinates Mol file for the small molecule Search links Involved in 39 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline H+ Identifier CHEBI:15378 Charge 1 Formula H InChIKeyhelp_outline GPRLSGONYQIRFK-UHFFFAOYSA-N SMILEShelp_outline [H+] 2D coordinates Mol file for the small molecule Search links Involved in 9,176 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
Cross-references
| RHEA:16049 | RHEA:16050 | RHEA:16051 | RHEA:16052 | |
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| Reaction direction help_outline | undefined | left-to-right | right-to-left | bidirectional |
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Publications
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The biosynthesis of adenosylcobalamin (vitamin B12).
Warren M.J., Raux E., Schubert H.L., Escalante-Semerena J.C.
Vitamin B12, or cobalamin, is one of the most structurally complex small molecules made in Nature. Major progress has been made over the past decade in understanding how this synthesis is accomplished. This review covers some of the most important findings that have been made and provides the read ... >> More
Vitamin B12, or cobalamin, is one of the most structurally complex small molecules made in Nature. Major progress has been made over the past decade in understanding how this synthesis is accomplished. This review covers some of the most important findings that have been made and provides the reader with a complete description of the transformation of uroporphyrinogen III into adenosylcobalamin (AdoCbl). 183 references are cited. << Less
Nat Prod Rep 19:390-412(2002) [PubMed] [EuropePMC]
This publication is cited by 16 other entries.
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In vitro synthesis of the nucleotide loop of cobalamin by Salmonella typhimurium enzymes.
Maggio-Hall L.A., Escalante-Semerena J.C.
In Salmonella typhimurium, the CobU, CobS, CobT, and CobC proteins have been proposed to catalyze the late steps in adenosylcobalamin biosynthesis, which define the nucleotide loop assembly pathway. This paper reports the in vitro assembly of the nucleotide loop of adenosylcobalamin from its precu ... >> More
In Salmonella typhimurium, the CobU, CobS, CobT, and CobC proteins have been proposed to catalyze the late steps in adenosylcobalamin biosynthesis, which define the nucleotide loop assembly pathway. This paper reports the in vitro assembly of the nucleotide loop of adenosylcobalamin from its precursors adenosylcobinamide, 5, 6-dimethylbenzimidazole, nicotinate mononucleotide, and GTP. Incubation of these precursors with the CobU, CobS, and CobT proteins resulted in the synthesis of adenosylcobalamin-5'-phosphate. This cobamide was isolated by HPLC, identified by UV-visible spectroscopy and mass spectrometry, and shown to support growth of a cobalamin auxotroph. Adenosylcobalamin-5'-phosphate was also isolated from reaction mixtures containing adenosylcobinamide-GDP (the product of the CobU reaction) and alpha-ribazole-5'-phosphate (the product of the CobT reaction) as substrates and CobS. These results allowed us to conclude that CobS is the cobalamin(-5'-phosphate) synthase enzyme in S. typhimurium. The CobC enzyme, previously shown to dephosphorylate alpha-ribazole-5'-phosphate to alpha-ribazole, was shown to dephosphorylate adenosylcobalamin-5'-phosphate to adenosylcobalamin. Adenosylcobinamide was converted to adenosylcobalamin in reactions where all four enzymes were present in the reaction mixture. This in vitro system offers a unique opportunity for the rapid synthesis and isolation of cobamides with structurally different lower-ligand bases that can be used to investigate the contributions of the lower-ligand base to cobalamin-dependent reactions. << Less
Proc. Natl. Acad. Sci. U.S.A. 96:11798-11803(1999) [PubMed] [EuropePMC]
This publication is cited by 1 other entry.