Enzymes
| UniProtKB help_outline | 4 proteins |
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- Name help_outline Co-precorrin-7 Identifier CHEBI:70791 Charge -6 Formula C44H50CoN4O14 InChIKeyhelp_outline GPKQHTAVLDBECX-HDPLZVLRSA-F SMILEShelp_outline [H][C@]12[C@H](CC([O-])=O)[C@@](C)(CCC([O-])=O)C3=[N+]1[Co--]14N5C(=CC6=[N+]1C(C[C@@]1(C)C(C)=C(CCC([O-])=O)C(C3C)=[N+]41)=C(CCC([O-])=O)[C@]6(C)CC([O-])=O)[C@@H](CCC([O-])=O)[C@](C)(CC([O-])=O)[C@]25C 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 S-adenosyl-L-methionine Identifier CHEBI:59789 Charge 1 Formula C15H23N6O5S InChIKeyhelp_outline MEFKEPWMEQBLKI-AIRLBKTGSA-O SMILEShelp_outline C[S+](CC[C@H]([NH3+])C([O-])=O)C[C@H]1O[C@H]([C@H](O)[C@@H]1O)n1cnc2c(N)ncnc12 2D coordinates Mol file for the small molecule Search links Involved in 924 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline Co-precorrin-8X Identifier CHEBI:70792 Charge -6 Formula C45H52CoN4O14 InChIKeyhelp_outline DPVDDBUQBNNVPO-WTEINHRPSA-F SMILEShelp_outline [H][C@]12[C@H](CC([O-])=O)[C@@](C)(CCC([O-])=O)C3=[N+]1[Co--]14N5C([C@@H](CCC([O-])=O)[C@](C)(CC([O-])=O)[C@]25C)=C(C)C2=[N+]1C(C[C@@]1(C)C(C)=C(CCC([O-])=O)C(C3C)=[N+]41)=C(CCC([O-])=O)[C@]2(C)CC([O-])=O 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 S-adenosyl-L-homocysteine Identifier CHEBI:57856 Charge 0 Formula C14H20N6O5S InChIKeyhelp_outline ZJUKTBDSGOFHSH-WFMPWKQPSA-N SMILEShelp_outline Nc1ncnc2n(cnc12)[C@@H]1O[C@H](CSCC[C@H]([NH3+])C([O-])=O)[C@@H](O)[C@H]1O 2D coordinates Mol file for the small molecule Search links Involved in 840 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 9,717 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
Cross-references
| RHEA:34591 | RHEA:34592 | RHEA:34593 | RHEA:34594 | |
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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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Structural characterization of novel cobalt corrinoids synthesized by enzymes of the vitamin B12 anaerobic pathway.
Santander P.J., Kajiwara Y., Williams H.J., Scott A.I.
Investigation on the use of the oxidized form (factor 3 (3a)) of the trimethylated intermediate (precorrin 3 (2)) as a substrate for the enzymes of the anaerobic pathway to vitamin B12 led to the synthesis of three pairs of novel cobalt corrinoids. The products were made with the aid of the Salmon ... >> More
Investigation on the use of the oxidized form (factor 3 (3a)) of the trimethylated intermediate (precorrin 3 (2)) as a substrate for the enzymes of the anaerobic pathway to vitamin B12 led to the synthesis of three pairs of novel cobalt corrinoids. The products were made with the aid of the Salmonella typhimurium enzymes CbiH, CbiF, CbiG, and CbiT, were synthesized in several 13C labeled versions, and were isolated as methylesters after esterification. Structures were determined by detailed NMR and MS analyses. Each set of products was obtained in the decarboxylated (RMe) and non-decarboxylated (R=CH2COOCH3) forms (at the C-12 position of the porphyrinoid). << Less
Bioorg. Med. Chem. 14:724-731(2006) [PubMed] [EuropePMC]
This publication is cited by 3 other entries.
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The crystal structure of MT0146/CbiT suggests that the putative precorrin-8w decarboxylase is a methyltransferase.
Keller J.P., Smith P.M., Benach J., Christendat D., deTitta G.T., Hunt J.F.
The CbiT and CbiE enzymes participate in the biosynthesis of vitamin B12. They are fused together in some organisms to form a protein called CobL, which catalyzes two methylations and one decarboxylation on a precorrin intermediate. Because CbiE has sequence homology to canonical precorrin methylt ... >> More
The CbiT and CbiE enzymes participate in the biosynthesis of vitamin B12. They are fused together in some organisms to form a protein called CobL, which catalyzes two methylations and one decarboxylation on a precorrin intermediate. Because CbiE has sequence homology to canonical precorrin methyltransferases, CbiT was hypothesized to catalyze the decarboxylation. We herein present the crystal structure of MT0146, the CbiT homolog from Methanobacterium thermoautotrophicum. The protein shows structural similarity to Rossmann-like S-adenosyl-methionine-dependent methyltransferases, and our 1.9 A cocrystal structure shows that it binds S-adenosyl-methionine in standard geometry near a binding pocket that could accommodate a precorrin substrate. Therefore, MT0146/CbiT probably functions as a precorrin methyltransferase and represents the first enzyme identified with this activity that does not have the canonical precorrin methyltransferase fold. << Less
Structure 10:1475-1487(2002) [PubMed] [EuropePMC]
This publication is cited by 2 other entries.