KEGG   ENZYME: 2.1.1.331
Entry
EC 2.1.1.331                Enzyme                                 
Name
bacteriochlorophyllide d C-121-methyltransferase;
bchR (gene name)
Class
Transferases;
Transferring one-carbon groups;
Methyltransferases
Sysname
S-adenosyl-L-methionine:8-ethyl-12-methyl-3-vinylbacteriochlorophyllide-d C-121-methyltransferase
Reaction(IUBMB)
S-adenosyl-L-methionine + 8-ethyl-12-methyl-3-vinylbacteriochlorophyllide d = S-adenosyl-L-homocysteine + 8,12-diethyl-3-vinylbacteriochlorophyllide d [RN:R11507]
Reaction(KEGG)
R11507
Substrate
S-adenosyl-L-methionine [CPD:C00019];
8-ethyl-12-methyl-3-vinylbacteriochlorophyllide d [CPD:C18157]
Product
S-adenosyl-L-homocysteine [CPD:C00021];
8,12-diethyl-3-vinylbacteriochlorophyllide d [CPD:C21427]
Comment
This enzyme, found in green sulfur bacteria (Chlorobiaceae) and green flimentous bacteria (Chloroflexaceae), is a radical S-adenosyl-L-methionine (AdoMet) enzyme and contains a [4Fe-4S] cluster. It adds a methyl group at the C-121 position of bacteriochlorophylls of the c, d and e types. This methylation plays a role in fine-tuning the structural arrangement of the bacteriochlorophyll aggregates in chlorosomes and therefore directly influences the chlorosomes absorption properties.
History
EC 2.1.1.331 created 2016
Pathway
ec00860  Porphyrin metabolism
ec01110  Biosynthesis of secondary metabolites
Orthology
K13602  bacteriochlorophyllide d C-12(1)-methyltransferase
Genes
CTECT1320
CPCCpar_1337
CLZBIU88_04215
CCHCag_0931
CPHCpha266_1644
CPBCphamn1_1023
CLIClim_1516
PVICvib_1051
PLTPlut_1318
PPHPpha_1617
PAAPaes_1466
PROCPtc2401_00733
PRSB9H02_04365
PROSCHL67_04105
CTSCtha_2306
 » show all
Reference
1  [PMID:17586634]
  Authors
Gomez Maqueo Chew A, Frigaard NU, Bryant DA
  Title
Bacteriochlorophyllide c C-8(2) and C-12(1) methyltransferases are essential for adaptation to low light in Chlorobaculum tepidum.
  Journal
J Bacteriol 189:6176-84 (2007)
DOI:10.1128/JB.00519-07
  Sequence
[cte:CT1320]
Other DBs
ExplorEnz - The Enzyme Database: 2.1.1.331
IUBMB Enzyme Nomenclature: 2.1.1.331
ExPASy - ENZYME nomenclature database: 2.1.1.331
BRENDA, the Enzyme Database: 2.1.1.331

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