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 and chlorophyll metabolism
ec01110  Biosynthesis of secondary metabolites
Orthology
K13602  bacteriochlorophyllide d C-12(1)-methyltransferase
Genes
CTE: CT1320
CPC: Cpar_1337
CLZ: BIU88_04215
CCH: Cag_0931
CPH: Cpha266_1644
CPB: Cphamn1_1023
CLI: Clim_1516
PVI: Cvib_1051
PLT: Plut_1318
PPH: Ppha_1617
PAA: Paes_1466
CTS: Ctha_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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