KEGG   ORTHOLOGY: K13601
Entry
K13601                      KO                                     
Symbol
bchQ
Name
bacteriochlorophyllide d C-8(2)-methyltransferase [EC:2.1.1.332]
Pathway
map00860  Porphyrin metabolism
map01110  Biosynthesis of secondary metabolites
Brite
KEGG Orthology (KO) [BR:ko00001]
 09100 Metabolism
  09108 Metabolism of cofactors and vitamins
   00860 Porphyrin metabolism
    K13601  bchQ; bacteriochlorophyllide d C-8(2)-methyltransferase
Enzymes [BR:ko01000]
 2. Transferases
  2.1  Transferring one-carbon groups
   2.1.1  Methyltransferases
    2.1.1.332  bacteriochlorophyllide d C-82-methyltransferase
     K13601  bchQ; bacteriochlorophyllide d C-8(2)-methyltransferase
Other DBs
RN: R11508 R11509
COG: COG1032
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
  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]
Reference
  Authors
Chew AG, Bryant DA
  Title
Chlorophyll biosynthesis in bacteria: the origins of structural and functional diversity.
  Journal
Annu Rev Microbiol 61:113-29 (2007)
DOI:10.1146/annurev.micro.61.080706.093242

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 metabolism
ec01110  Biosynthesis of secondary metabolites
Orthology
K13601  bacteriochlorophyllide d C-8(2)-methyltransferase
Genes
CTECT1777(bchQ)
CPCCpar_0429
CLZBIU88_02080 BIU88_11025
CCHCag_0116
CPHCpha266_0200
CPBCphamn1_0267
CLIClim_1975
PVICvib_0369
PLTPlut_0407
PPHPpha_2731 Ppha_2757
PAAPaes_1806
PROCPtc2401_01903
PRSB9H02_09075
PROSCHL67_01205
CTSCtha_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

KEGG   REACTION: R11509
Entry
R11509                      Reaction                               
Name
S-adenosyl-L-methionine:12-ethyl-8-propyl-3-vinylbacteriochlorophyllide d C-8(2)-methyltransferase
Definition
12-Ethyl-8-propyl-3-vinylbacteriochlorophyllide d + S-Adenosyl-L-methionine <=> 12-Ethyl-8-isobutyl-3-vinylbacteriochlorophyllide d + S-Adenosyl-L-homocysteine
Equation
Comment
radical SAM
Reaction class
RC03459  C21428_C21429
Enzyme
Pathway
rn00860  Porphyrin metabolism
rn01110  Biosynthesis of secondary metabolites
Orthology
K13601  bacteriochlorophyllide d C-8(2)-methyltransferase [EC:2.1.1.332]
Other DBs
RHEA: 49179

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