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Literature summary for 2.1.1.11 extracted from

  • Hinchigeri, S.B.; Chan, J.C.S.; Richards, W.R.
    Purification of S-adenosyl-L-methionine: magnesium protoporphyrin methyltransferase by affinity chromatography (1981), Photosynthetica, 15, 351-359.
No PubMed abstract available

Activating Compound

Activating Compound Comment Organism Structure
thiol compounds stimulate Hordeum vulgare

Inhibitors

Inhibitors Comment Organism Structure
hemin noncompetitive with respect to magnesium protoporphyrin Hordeum vulgare
S-adenosyl-L-homocysteine competitive with S-adenosyl-L-methionine Hordeum vulgare
S-adenosylethionine competitive with S-adenosyl-L-methionine Hordeum vulgare

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
0.039
-
S-adenosyl-L-methionine
-
Hordeum vulgare
0.048
-
magnesium protoporphyrin IX
-
Hordeum vulgare

Organism

Organism UniProt Comment Textmining
Hordeum vulgare
-
-
-

Purification (Commentary)

Purification (Comment) Organism
-
Hordeum vulgare

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
S-adenosyl-L-methionine + magnesium mesoporphyrin
-
Hordeum vulgare S-adenosyl-L-homocysteine + magnesium mesoporphyrin monomethyl ester
-
?
S-adenosyl-L-methionine + magnesium protoporphyrin
-
Hordeum vulgare S-adenosyl-L-homocysteine + magnesium protoporphyrin monomethyl ester
-
?