EC - Magnesium protoporphyrin IX methyltransferase

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IntEnz Enzyme Nomenclature


Accepted name:
magnesium protoporphyrin IX methyltransferase
Other names:
(−)-S-adenosyl-L-methionine:magnesium-protoporphyrin IX methyltransferase
S-adenosyl-L-methionine:Mg protoporphyrin methyltransferase
S-adenosyl-L-methionine:magnesium-protoporphyrin O-methyltransferase
S-adenosylmethioninemagnesium protoporphyrin methyltransferase
Mg-protoporphyrin IX methyltransferase
magnesium-protoporphyrin O-methyltransferase
S-adenosylmethionine-magnesium protoporphyrin methyltransferase
Systematic name:
S-adenosyl-L-methionine:magnesium-protoporphyrin-IX O-methyltransferase


Links to other databases

Enzymes and pathways: NC-IUBMB , BRENDA , DIAGRAM , ExplorEnz , ENZYME@ExPASy , KEGG , MetaCyc , UniPathway
Structural data: CSA , EC2PDB
Gene Ontology: GO:0046406
CAS Registry Number: 9029-82-7


  1. Gibson, K.D., Neuberger, A. and Tait, G.H.
    Studies on the biosynthesis of porphyrin and bacteriochlorophyll by Rhodopseudomonas spheroides. 4. S-Adenosylmethioninemagnesium protoporphyrin methyltransferase.
    Biochem. J. 88: 325-334 (1963). [PMID: 14063871]
  2. Shepherd, M., Reid, J.D. and Hunter, C.N.
    Purification and kinetic characterization of the magnesium protoporphyrin IX methyltransferase from Synechocystis PCC6803.
    Biochem. J. 371: 351-360 (2003). [PMID: 12489983]
  3. Bollivar, D.W., Jiang, Z.-Y., Bauer, C.E. and Beale, S.I.
    Heterologous expression of the bchM gene product from Rhodobacter capsulatus and demonstration that it encodes S-adenosyl-L-methionine:Mg-protoporphyrin IX methyltransferase.
    J. Bacteriol. 176: 5290-5296 (1994). [PMID: 8071204]
  4. Gibson, L.C. and Hunter, C.N.
    The bacteriochlorophyll biosynthesis gene, bchM, of Rhodobacter sphaeroides encodes S-adenosyl-L-methionine: Mg protoporphyrin IX methyltransferase.
    FEBS Lett. 352: 127-130 (1994). [PMID: 7925960]
  5. Ebbon, J.G. and Tait, G.H.
    Studies on S-adenosylmethionine-magnesium protoporphyrin methyltransferase in Euglena gracilis strain Z.
    Biochem. J. 111: 573-582 (1969). [PMID: 5774480]

[EC created 1965, modified 2003]