KEGG   ENZYME: 2.1.1.143Help
Entry
EC 2.1.1.143                Enzyme                                 

Name
24-methylenesterol C-methyltransferase;
SMT2;
24-methylenelophenol C-241-methyltransferase
Class
Transferases;
Transferring one-carbon groups;
Methyltransferases
BRITE hierarchy
Sysname
S-adenosyl-L-methionine:24-methylenelophenol C-methyltransferase
Reaction(IUBMB)
S-adenosyl-L-methionine + 24-methylenelophenol = S-adenosyl-L-homocysteine + (Z)-24-ethylidenelophenol [RN:R05776]
Reaction(KEGG)
Substrate
S-adenosyl-L-methionine [CPD:C00019];
24-methylenelophenol [CPD:C11522]
Product
S-adenosyl-L-homocysteine [CPD:C00021];
(Z)-24-ethylidenelophenol [CPD:C11523]
Comment
This is the second methylation step of plant sterol biosynthesis (cf EC 2.1.1.142, cycloartenol 24-C-methyltransferase).
History
EC 2.1.1.143 created 2001
Pathway
Steroid biosynthesis
Biosynthesis of secondary metabolites
Orthology
K08242  
24-methylenesterol C-methyltransferase
Genes
ATH: 
AT1G20330(SMT2) AT1G76090(SMT3)
ALY: 
CRB: 
EUS: 
CIT: 
CIC: 
TCC: 
GMX: 
MTR: 
CAM: 
FVE: 
CSV: 
RCU: 
POP: 
POPTR_0002s01780g(POPTRDRAFT_815989) POPTR_0005s26710g(POPTRDRAFT_559888)
VVI: 
SLY: 
SOT: 
OSA: 
DOSA: 
Os03t0136200-01(Os03g0136200)
OBR: 
BDI: 
SBI: 
SORBI_01g047930(SORBIDRAFT_01g047930)
ZMA: 
SITA: 
ATR: 
s00001p00143940(AMTR_s00001p00143940)
SMO: 
PPP: 
CRE: 
VCN: 
MIS: 
CSL: 
 » show all
Taxonomy
Reference
1  [PMID:9746350]
  Authors
Bouvier-Nave P, Husselstein T, Benveniste P.
  Title
Two families of sterol methyltransferases are involved in the first and the second methylation steps of plant sterol biosynthesis.
  Journal
Eur. J. Biochem. 256 (1998) 88-96.
  Organism
Nicotiana tabacum
Other DBs
ExplorEnz - The Enzyme Database: 
IUBMB Enzyme Nomenclature: 
ExPASy - ENZYME nomenclature database: 
BRENDA, the Enzyme Database: 
CAS: 
67165-89-3

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