Enzymes
| UniProtKB help_outline | 7 proteins |
| Enzyme class help_outline |
|
| GO Molecular Function help_outline |
|
Reaction participants Show >> << Hide
- 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 cob(II)yrinate Identifier CHEBI:58894 Charge -6 Formula C45H52CoN4O14 InChIKeyhelp_outline ZRAQEEAQQLYOBK-OKJGWHJPSA-F SMILEShelp_outline [H][C@]12[C@H](CC([O-])=O)[C@@](C)(CCC([O-])=O)\C(N1[Co+])=C(C)\C1=N\C(=C/C3=N/C(=C(C)\C4=N[C@]2(C)[C@@](C)(CC([O-])=O)[C@@H]4CCC([O-])=O)[C@@](C)(CC([O-])=O)[C@@H]3CCC([O-])=O)C(C)(C)[C@@H]1CCC([O-])=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
Cross-references
| RHEA:16209 | RHEA:16210 | RHEA:16211 | RHEA:16212 | |
|---|---|---|---|---|
| Reaction direction help_outline | undefined | left-to-right | right-to-left | bidirectional |
| UniProtKB help_outline |
|
|||
| EC numbers help_outline | ||||
| Gene Ontology help_outline | ||||
| KEGG help_outline | ||||
| MetaCyc help_outline |
Publications
-
The crystal structure of putative precorrin isomerase CbiC in cobalamin biosynthesis.
Xue Y., Wei Z., Li X., Gong W.
The leptospira cbiC encodes the enzyme catalyzing the methyl rearrangement reaction of the cobalamin biosynthesis pathway. The protein has been cloned and overexpressed as a His-tagged recombinant protein in Escherichia coli. The crystal structures have been solved in two crystal forms (P4(2)2(1)2 ... >> More
The leptospira cbiC encodes the enzyme catalyzing the methyl rearrangement reaction of the cobalamin biosynthesis pathway. The protein has been cloned and overexpressed as a His-tagged recombinant protein in Escherichia coli. The crystal structures have been solved in two crystal forms (P4(2)2(1)2 and P3(1)21) diffracting to 3.0 and 2.3A resolution, respectively. The structures are similar to the precorrin-8x methyl mutase (CobH), an enzyme of the aerobic pathway to vitamin B12. << Less
-
Elucidation of the anaerobic pathway for the corrin component of cobalamin (vitamin B12).
Moore S.J., Lawrence A.D., Biedendieck R., Deery E., Frank S., Howard M.J., Rigby S.E., Warren M.J.
It has been known for the past 20 years that two pathways exist in nature for the de novo biosynthesis of the coenzyme form of vitamin B12, adenosylcobalamin, representing aerobic and anaerobic routes. In contrast to the aerobic pathway, the anaerobic route has remained enigmatic because many of i ... >> More
It has been known for the past 20 years that two pathways exist in nature for the de novo biosynthesis of the coenzyme form of vitamin B12, adenosylcobalamin, representing aerobic and anaerobic routes. In contrast to the aerobic pathway, the anaerobic route has remained enigmatic because many of its intermediates have proven technically challenging to isolate, because of their inherent instability. However, by studying the anaerobic cobalamin biosynthetic pathway in Bacillus megaterium and using homologously overproduced enzymes, it has been possible to isolate all of the intermediates between uroporphyrinogen III and cobyrinic acid. Consequently, it has been possible to detail the activities of purified cobinamide biosynthesis (Cbi) proteins CbiF, CbiG, CbiD, CbiJ, CbiET, and CbiC, as well as show the direct in vitro conversion of 5-aminolevulinic acid into cobyrinic acid using a mixture of 14 purified enzymes. This approach has resulted in the isolation of the long sought intermediates, cobalt-precorrin-6A and -6B and cobalt-precorrin-8. EPR, in particular, has proven an effective technique in following these transformations with the cobalt(II) paramagnetic electron in the dyz orbital, rather than the typical dz2. This result has allowed us to speculate that the metal ion plays an unexpected role in assisting the interconversion of pathway intermediates. By determining a function for all of the pathway enzymes, we complete the tool set for cobalamin biosynthesis and pave the way for not only enhancing cobalamin production, but also design of cobalamin derivatives through their combinatorial use and modification. << Less
Proc. Natl. Acad. Sci. U.S.A. 110:14906-14911(2013) [PubMed] [EuropePMC]
This publication is cited by 1 other entry.