KEGG   ENZYME: 2.1.1.332
Entry
EC 2.1.1.332                Enzyme                                 

Name
bacteriochlorophyllide d C-82-methyltransferase;
bchQ (gene name)
Class
Transferases;
Transferring one-carbon groups;
Methyltransferases
Sysname
S-adenosyl-L-methionine:8,12-diethyl-3-vinylbacteriochlorophyllide-d C-82-methyltransferase
Reaction(IUBMB)
(1) S-adenosyl-L-methionine + 8,12-diethyl-3-vinylbacteriochlorophyllide d = S-adenosyl-L-homocysteine + 12-ethyl-8-propyl-3-vinylbacteriochlorophyllide d [RN:R11508];
(2) S-adenosyl-L-methionine + 12-ethyl-8-propyl-3-vinylbacteriochlorophyllide d = S-adenosyl-L-homocysteine + 12-ethyl-8-isobutyl-3-vinylbacteriochlorophyllide d [RN:R11509]
Reaction(KEGG)
R11508 R11509
Substrate
S-adenosyl-L-methionine [CPD:C00019];
8,12-diethyl-3-vinylbacteriochlorophyllide d [CPD:C21427];
12-ethyl-8-propyl-3-vinylbacteriochlorophyllide d [CPD:C21428]
Product
S-adenosyl-L-homocysteine [CPD:C00021];
12-ethyl-8-propyl-3-vinylbacteriochlorophyllide d [CPD:C21428];
12-ethyl-8-isobutyl-3-vinylbacteriochlorophyllide d [CPD:C21429]
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 one or two methyl groups at the C-82 position of bacteriochlorophylls of the c, d, and e types. These methylations play a role in fine-tuning the structural arrangement of the bacteriochlorophyll aggregates in chlorosomes and therefore directly influence chlorosomal absorption properties.
History
EC 2.1.1.332 created 2016
Pathway
ec00860  Porphyrin and chlorophyll metabolism
ec01110  Biosynthesis of secondary metabolites
Orthology
K13601  bacteriochlorophyllide d C-8(2)-methyltransferase
Genes
CTE: CT1777(bchQ)
CPC: Cpar_0429
CLZ: BIU88_02080 BIU88_11025
CCH: Cag_0116
CPH: Cpha266_0200
CPB: Cphamn1_0267
CLI: Clim_1975
PVI: Cvib_0369
PLT: Plut_0407
PPH: Ppha_2731 Ppha_2757
PAA: Paes_1806
CTS: Ctha_1292
 » 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:CT1777]
Other DBs
ExplorEnz - The Enzyme Database: 2.1.1.332
IUBMB Enzyme Nomenclature: 2.1.1.332
ExPASy - ENZYME nomenclature database: 2.1.1.332
BRENDA, the Enzyme Database: 2.1.1.332

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