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BRENDA support

Information on EC 2.1.1.41 - sterol 24-C-methyltransferase

for references in articles please use BRENDA:EC2.1.1.41

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IUBMB Comments

Requires glutathione. Acts on a range of sterols with a 24(25)-double bond in the sidechain. While zymosterol is the preferred substrate it also acts on desmosterol, 5α-cholesta-7,24-dien-3β-ol, 5α-cholesta-5,7,24-trien-3β-ol, 4α-methylzymosterol and others. S-Adenosyl-L-methionine attacks the Si-face of the 24(25) double bond and the C-24 hydrogen is transferred to C-25 on the Re face of the double bond.

The expected taxonomic range for this enzyme is: Bacteria, Eukaryota, Archaea

Synonyms
erg6p, sterol 24-c-methyltransferase, c-24 sterol methyltransferase, tbsmt, pbsmt, c24-methyltransferase, 24-c-sterol methyltransferase, (s)-adenosyl-l-methionine:delta24(25)-sterol methyl transferase, more

REACTION
REACTION DIAGRAM
COMMENTARY hide
ORGANISM
UNIPROT
LITERATURE
S-adenosyl-L-methionine + 5alpha-cholesta-8,24-dien-3beta-ol = S-adenosyl-L-homocysteine + 24-methylene-5alpha-cholest-8-en-3beta-ol
show the reaction diagram
PATHWAY SOURCE
PATHWAYS
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