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HAMAP annotation rule: MF_00353
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General rule information

Accession MF_00353
Dates 1-JUN-2001 (Created)
17-AUG-2010 (Last updated, Version 33)
Data class Protein
Predictors HAMAP; MF_00353; [distribution of match scores in UniProtKB];[seed alignment for MF_00353]
Names ChlB_BchB


Propagated annotation

Identifier, protein and gene names

case not <OG:Chloroplast> and not <OC:Cyanobacteria>
Identifier BCHB
end case


case <OG:Chloroplast> or <OC:Cyanobacteria>
Identifier CHLB
end case

Protein name
RecName: Full=Light-independent protochlorophyllide reductase subunit B;
Short=DPOR subunit B;
Short=LI-POR subunit B;
EC=1.18.-.-;

case not <OG:Chloroplast> and not <OC:Cyanobacteria>
Gene name bchB
end case


case <OG:Chloroplast> or <OC:Cyanobacteria>
Gene name chlB
end case

Comments
FUNCTION: Uses Mg-ATP and reduced ferredoxin to reduce ring D of protochlorophyllide (Pchlide) to form chlorophyllide a (Chlide). This reaction is light-independent (By similarity).

case not <OG:Chloroplast> and not <OC:Cyanobacteria>
PATHWAY: Porphyrin biosynthesis; bacteriochlorophyll biosynthesis (light-independent).
SUBUNIT: Protochlorophyllide reductase is thought to be composed of three subunits; BchL, BchN and BchB. Could form a heterotetramer of two BchB and two BchN subunits (By similarity).
end case


case <OC:Cyanobacteria>
PATHWAY: Porphyrin biosynthesis; chlorophyll biosynthesis (light-independent).
SUBUNIT: Protochlorophyllide reductase is thought to be composed of three subunits; ChlL, ChlN and ChlB. Could form a heterotetramer of two ChlB and two ChlN subunits (By similarity).
end case


case <OG:Chloroplast>
PATHWAY: Porphyrin biosynthesis; chlorophyll biosynthesis (light-independent).
SUBUNIT: Protochlorophyllide reductase is thought to be composed of three subunits; chlL, chlN and chlB. Could form a heterotetramer of two chlB and two chlN subunits (By similarity).
SUBCELLULAR LOCATION: Plastid, chloroplast.
end case

SIMILARITY: Belongs to the ChlB/BchB/BchZ family.
Cross-references
Pfam PF00148; Oxidored_nitro; 1;
PF08369; PCP_red; 1;
PIRSF PIRSF000163; PCP_ChlB; 1;
TIGRFAMs TIGR01278; DPOR_BchB; 1;
Keywords
Oxidoreductase, Photosynthesis, Chlorophyll biosynthesis.

case not <OG:Chloroplast> and not <OC:Cyanobacteria>
Bacteriochlorophyll biosynthesis.
end case

Gene Ontology
GO:0016730; Molecular function: oxidoreductase activity, acting on iron-sulfur proteins as donors.

case not <OG:Chloroplast> and not <OC:Cyanobacteria>
GO:0030494; Biological process: bacteriochlorophyll biosynthetic process.
end case


case <OG:Chloroplast> or <OC:Cyanobacteria>
GO:0015995; Biological process: chlorophyll biosynthetic process.
end case

GO:0015979; Biological process: photosynthesis.

case <OG:Chloroplast>
GO:0009507; Cellular component: chloroplast.
end case



Additional information

Size range: 440-568 amino acids
Related UniRules: None
Template: P26163 (BCHB_RHOCB)
Scope: Bacteria
Plastid
Fusion: Nter: None; Cter: None
Duplicate: None
Plasmid encoded: None
Comments: External expert: Yuichi Fujita, fujita@protein.osaka-u.ac.jp. Divergent chlamydomonadaceae (with insert) not shown in alignment and not used in size range.

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UniProtKB rule member sequences