BCHL_RHORU
ID BCHL_RHORU Reviewed; 290 AA.
AC Q9L8J5;
DT 27-APR-2001, integrated into UniProtKB/Swiss-Prot.
DT 01-OCT-2000, sequence version 1.
DT 03-AUG-2022, entry version 98.
DE RecName: Full=Light-independent protochlorophyllide reductase iron-sulfur ATP-binding protein {ECO:0000255|HAMAP-Rule:MF_00355};
DE Short=DPOR subunit L {ECO:0000255|HAMAP-Rule:MF_00355};
DE Short=LI-POR subunit L {ECO:0000255|HAMAP-Rule:MF_00355};
DE EC=1.3.7.7 {ECO:0000255|HAMAP-Rule:MF_00355};
GN Name=bchL {ECO:0000255|HAMAP-Rule:MF_00355};
OS Rhodospirillum rubrum.
OC Bacteria; Proteobacteria; Alphaproteobacteria; Rhodospirillales;
OC Rhodospirillaceae; Rhodospirillum.
OX NCBI_TaxID=1085;
RN [1]
RP NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RC STRAIN=R5;
RX PubMed=10671438; DOI=10.1128/jb.182.5.1200-1207.2000;
RA Cheng Y.S., Brantner C.A., Tsapin A., Collins M.L.P.;
RT "Role of the H protein in assembly of the photochemical reaction center and
RT intracytoplasmic membrane in Rhodospirillum rubrum.";
RL J. Bacteriol. 182:1200-1207(2000).
CC -!- FUNCTION: Component of the dark-operative protochlorophyllide reductase
CC (DPOR) that uses Mg-ATP and reduced ferredoxin to reduce ring D of
CC protochlorophyllide (Pchlide) to form chlorophyllide a (Chlide). This
CC reaction is light-independent. The L component serves as a unique
CC electron donor to the NB-component of the complex, and binds Mg-ATP.
CC {ECO:0000255|HAMAP-Rule:MF_00355}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=2 ADP + chlorophyllide a + oxidized 2[4Fe-4S]-[ferredoxin] + 2
CC phosphate = 2 ATP + 2 H2O + protochlorophyllide a + reduced 2[4Fe-
CC 4S]-[ferredoxin]; Xref=Rhea:RHEA:28202, Rhea:RHEA-COMP:10002,
CC Rhea:RHEA-COMP:10004, ChEBI:CHEBI:15377, ChEBI:CHEBI:30616,
CC ChEBI:CHEBI:33722, ChEBI:CHEBI:33723, ChEBI:CHEBI:43474,
CC ChEBI:CHEBI:83348, ChEBI:CHEBI:83350, ChEBI:CHEBI:456216; EC=1.3.7.7;
CC Evidence={ECO:0000255|HAMAP-Rule:MF_00355};
CC -!- COFACTOR:
CC Name=[4Fe-4S] cluster; Xref=ChEBI:CHEBI:49883;
CC Evidence={ECO:0000255|HAMAP-Rule:MF_00355};
CC Note=Binds 1 [4Fe-4S] cluster per dimer. {ECO:0000255|HAMAP-
CC Rule:MF_00355};
CC -!- PATHWAY: Porphyrin-containing compound metabolism; bacteriochlorophyll
CC biosynthesis (light-independent). {ECO:0000255|HAMAP-Rule:MF_00355}.
CC -!- SUBUNIT: Homodimer. Protochlorophyllide reductase is composed of three
CC subunits; BchL, BchN and BchB. {ECO:0000255|HAMAP-Rule:MF_00355}.
CC -!- SIMILARITY: Belongs to the NifH/BchL/ChlL family. {ECO:0000255|HAMAP-
CC Rule:MF_00355}.
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DR EMBL; AF202319; AAF37353.1; -; Genomic_DNA.
DR RefSeq; WP_042440328.1; NZ_NHSM01000041.1.
DR AlphaFoldDB; Q9L8J5; -.
DR SMR; Q9L8J5; -.
DR UniPathway; UPA00671; -.
DR GO; GO:0051539; F:4 iron, 4 sulfur cluster binding; IEA:UniProtKB-UniRule.
DR GO; GO:0005524; F:ATP binding; IEA:UniProtKB-UniRule.
DR GO; GO:0046872; F:metal ion binding; IEA:UniProtKB-KW.
DR GO; GO:0016730; F:oxidoreductase activity, acting on iron-sulfur proteins as donors; IEA:InterPro.
DR GO; GO:0016636; F:oxidoreductase activity, acting on the CH-CH group of donors, iron-sulfur protein as acceptor; IEA:UniProtKB-UniRule.
DR GO; GO:0036070; P:light-independent bacteriochlorophyll biosynthetic process; IEA:UniProtKB-UniPathway.
DR GO; GO:0019685; P:photosynthesis, dark reaction; IEA:InterPro.
DR Gene3D; 3.40.50.300; -; 1.
DR HAMAP; MF_00355; ChlL_BchL; 1.
DR InterPro; IPR030655; NifH/chlL_CS.
DR InterPro; IPR000392; NifH/frxC.
DR InterPro; IPR027417; P-loop_NTPase.
DR InterPro; IPR005971; Protochlorophyllide_ATP-bd.
DR PANTHER; PTHR42864; PTHR42864; 1.
DR Pfam; PF00142; Fer4_NifH; 1.
DR PIRSF; PIRSF000363; Nitrogenase_iron; 1.
DR SUPFAM; SSF52540; SSF52540; 1.
DR TIGRFAMs; TIGR01281; DPOR_bchL; 1.
DR PROSITE; PS00746; NIFH_FRXC_1; 1.
DR PROSITE; PS00692; NIFH_FRXC_2; 1.
DR PROSITE; PS51026; NIFH_FRXC_3; 1.
PE 3: Inferred from homology;
KW 4Fe-4S; ATP-binding; Bacteriochlorophyll biosynthesis;
KW Chlorophyll biosynthesis; Iron; Iron-sulfur; Magnesium; Metal-binding;
KW Nucleotide-binding; Oxidoreductase; Photosynthesis.
FT CHAIN 1..290
FT /note="Light-independent protochlorophyllide reductase
FT iron-sulfur ATP-binding protein"
FT /id="PRO_0000139581"
FT BINDING 34..39
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00355"
FT BINDING 38
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00355"
FT BINDING 63
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00355"
FT BINDING 119
FT /ligand="[4Fe-4S] cluster"
FT /ligand_id="ChEBI:CHEBI:49883"
FT /ligand_note="ligand shared between dimeric partners"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00355"
FT BINDING 153
FT /ligand="[4Fe-4S] cluster"
FT /ligand_id="ChEBI:CHEBI:49883"
FT /ligand_note="ligand shared between dimeric partners"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00355"
FT BINDING 204..205
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00355"
FT BINDING 228..230
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00355"
SQ SEQUENCE 290 AA; 31484 MW; 6AFA2DAF5E6D51D6 CRC64;
MRQPPDGEGS VQVEMDPALH IETAKVFAIY GKGGIGKSTT SSNLSAAFSK LGKRVVQIGC
DPKHDSTFTL TKRLVPTVID VLQAVHFHTE ELRVEDFVYE GYNGVMCVEA GGPPAGTGCG
GYVVGQTVKL LKEHHILEDA DVVVFDVLGD VVCGGFATPL QHAERALVVA ANDFDSIFAA
NRIAAAIQAK AKNYDVRLGG IIANRSVATD QIERFNARSG MRTLAHFPDL DVIRRSRLCK
STLFEMEPSP ELAAVQQEYL RLAEALWEGV EPLTATPLID REIFDLLGFD
