ENZYME entry: EC 1.21.98.3
Accepted Name |
anaerobic magnesium-protoporphyrin IX monomethyl ester cyclase.
|
Alternative Name(s) |
MPE cyclase. |
Reaction catalysed |
H2O + Mg-protoporphyrin IX 13-monomethyl ester + 3 S-adenosyl-L-methionine <=> 3,8-divinyl protochlorophyllide a + 3 5'-deoxyadenosine + 4 H(+) + 3 L-methionine |
Comment(s) |
- This radical AdoMet enzyme participates in the biosynthesis of
chlorophyllide a in anaerobic bacteria, catalyzing the formation of
an isocyclic ring.
- The same transformation is achieved in aerobic organisms by the
oxygen-dependent EC 1.14.13.81.
- Some facultative phototrophic bacteria, such as Rubrivivax
gelatinosus, possess both enzymes.
|
Cross-references |
BRENDA | 1.21.98.3 |
EC2PDB | 1.21.98.3 |
ExplorEnz | 1.21.98.3 |
PRIAM enzyme-specific profiles | 1.21.98.3 |
KEGG Ligand Database for Enzyme Nomenclature | 1.21.98.3 |
IUBMB Enzyme Nomenclature | 1.21.98.3 |
IntEnz | 1.21.98.3 |
MEDLINE | Find literature relating to 1.21.98.3 |
MetaCyc | 1.21.98.3 |
Rhea expert-curated reactions | 1.21.98.3 |
UniProtKB/Swiss-Prot |
|
View entry in original ENZYME format
View entry in raw text format (no links)
All
ENZYME /
UniProtKB/Swiss-Prot entries corresponding to 1.21.98.-
All ENZYME / UniProtKB/Swiss-Prot entries corresponding to 1.21.-.-
All ENZYME / UniProtKB/Swiss-Prot entries corresponding to 1.-.-.-