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Information on EC 2.1.1.41 - sterol 24-C-methyltransferase

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EC Tree
     2 Transferases
         2.1 Transferring one-carbon groups
             2.1.1 Methyltransferases
                2.1.1.41 sterol 24-C-methyltransferase
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, 5alpha-cholesta-7,24-dien-3beta-ol, 5alpha-cholesta-5,7,24-trien-3beta-ol, 4alpha-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.
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Word Map
The expected taxonomic range for this enzyme is: Eukaryota, Bacteria
Synonyms
(S)-adenosyl-L-methionine:DELTA24(25)-sterol methyl transferase, 24-C-sterol methyltransferase, 24-SMT, 24-sterol C-methyltransferase, C-24 sterol methyltransferase, C-24-methyltransferase, C24-methyltransferase, C24-sterol methyltransferase type 1, DELTA(24,25)-SMT, DELTA24-methyltransferase, 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
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