Biology:Adenosylcobinamide-GDP ribazoletransferase

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Adenosylcobinamide-GDP ribazoletransferase
Identifiers
EC number2.7.8.26
CAS number137672-85-6
Databases
IntEnzIntEnz view
BRENDABRENDA entry
ExPASyNiceZyme view
KEGGKEGG entry
MetaCycmetabolic pathway
PRIAMprofile
PDB structuresRCSB PDB PDBe PDBsum

Adenosylcobinamide-GDP ribazoletransferase (EC 2.7.8.26, CobS, cobalamin synthase, cobalamin-5'-phosphate synthase, cobalamin (5'-phosphate) synthase) is an enzyme with systematic name adenosylcobinamide-GDP:alpha-ribazole ribazoletransferase.[1][2][3] This enzyme catalyses the following chemical reaction

(1) adenosylcobinamide-GDP + alpha-ribazole [math]\displaystyle{ \rightleftharpoons }[/math] GMP + adenosylcobalamin
(2) adenosylcobinamide-GDP + alpha-ribazole 5'-phosphate [math]\displaystyle{ \rightleftharpoons }[/math] GMP + adenosylcobalamin 5'-phosphate

This enzyme is part of the biosynthetic pathway to cobalamin (vitamin B12) in bacteria.

See also

References

  1. "In vitro synthesis of the nucleotide loop of cobalamin by Salmonella typhimurium enzymes". Proceedings of the National Academy of Sciences of the United States of America 96 (21): 11798–803. October 1999. doi:10.1073/pnas.96.21.11798. PMID 10518530. Bibcode1999PNAS...9611798M. 
  2. "The biosynthesis of adenosylcobalamin (vitamin B12)". Natural Product Reports 19 (4): 390–412. August 2002. doi:10.1039/b108967f. PMID 12195810. 
  3. "Genetic analysis, nucleotide sequence, and products of two Pseudomonas denitrificans cob genes encoding nicotinate-nucleotide: dimethylbenzimidazole phosphoribosyltransferase and cobalamin (5'-phosphate) synthase". Journal of Bacteriology 173 (19): 6066–73. October 1991. doi:10.1128/jb.173.19.6066-6073.1991. PMID 1917841. 

External links