ID Q0YR38_9CHLB Unreviewed; 535 AA.
AC Q0YR38;
DT 05-SEP-2006, integrated into UniProtKB/TrEMBL.
DT 05-SEP-2006, sequence version 1.
DT 24-JAN-2024, entry version 74.
DE RecName: Full=Light-independent protochlorophyllide reductase subunit B {ECO:0000256|HAMAP-Rule:MF_00353};
DE Short=DPOR subunit B {ECO:0000256|HAMAP-Rule:MF_00353};
DE Short=LI-POR subunit B {ECO:0000256|HAMAP-Rule:MF_00353};
DE EC=1.3.7.7 {ECO:0000256|HAMAP-Rule:MF_00353};
GN Name=bchB {ECO:0000256|HAMAP-Rule:MF_00353};
GN ORFNames=CferDRAFT_0680 {ECO:0000313|EMBL:EAT58752.1};
OS Chlorobium ferrooxidans DSM 13031.
OC Bacteria; Chlorobiota; Chlorobiia; Chlorobiales; Chlorobiaceae;
OC Chlorobium/Pelodictyon group; Chlorobium.
OX NCBI_TaxID=377431 {ECO:0000313|EMBL:EAT58752.1, ECO:0000313|Proteomes:UP000004162};
RN [1] {ECO:0000313|EMBL:EAT58752.1, ECO:0000313|Proteomes:UP000004162}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=DSM 13031 {ECO:0000313|EMBL:EAT58752.1,
RC ECO:0000313|Proteomes:UP000004162};
RG US DOE Joint Genome Institute (JGI-ORNL);
RA Larimer F., Land M., Hauser L.;
RT "Annotation of the draft genome assembly of Chlorobium ferroxidans DSM
RT 13031.";
RL Submitted (JUL-2006) to the EMBL/GenBank/DDBJ databases.
RN [2] {ECO:0000313|EMBL:EAT58752.1, ECO:0000313|Proteomes:UP000004162}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=DSM 13031 {ECO:0000313|EMBL:EAT58752.1,
RC ECO:0000313|Proteomes:UP000004162};
RG US DOE Joint Genome Institute (JGI-PGF);
RA Copeland A., Lucas S., Lapidus A., Barry K., Glavina del Rio T., Dalin E.,
RA Tice H., Bruce D., Pitluck S., Richardson P.;
RT "Sequencing of the draft genome and assembly of Chlorobium ferroxidans DSM
RT 13031.";
RL Submitted (JUL-2006) to the EMBL/GenBank/DDBJ databases.
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 NB-protein (BchN-BchB) is the
CC catalytic component of the complex. {ECO:0000256|HAMAP-Rule:MF_00353}.
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:0000256|HAMAP-Rule:MF_00353};
CC -!- COFACTOR:
CC Name=[4Fe-4S] cluster; Xref=ChEBI:CHEBI:49883;
CC Evidence={ECO:0000256|HAMAP-Rule:MF_00353};
CC Note=Binds 1 [4Fe-4S] cluster per heterodimer. The cluster is bound at
CC the heterodimer interface by residues from both subunits.
CC {ECO:0000256|HAMAP-Rule:MF_00353};
CC -!- PATHWAY: Porphyrin-containing compound metabolism; bacteriochlorophyll
CC biosynthesis (light-independent). {ECO:0000256|HAMAP-Rule:MF_00353}.
CC -!- SUBUNIT: Protochlorophyllide reductase is composed of three subunits;
CC BchL, BchN and BchB. Forms a heterotetramer of two BchB and two BchN
CC subunits. {ECO:0000256|HAMAP-Rule:MF_00353}.
CC -!- SIMILARITY: Belongs to the ChlB/BchB/BchZ family. {ECO:0000256|HAMAP-
CC Rule:MF_00353}.
CC -!- CAUTION: The sequence shown here is derived from an EMBL/GenBank/DDBJ
CC whole genome shotgun (WGS) entry which is preliminary data.
CC {ECO:0000313|EMBL:EAT58752.1}.
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DR EMBL; AASE01000013; EAT58752.1; -; Genomic_DNA.
DR RefSeq; WP_006366587.1; NZ_AASE01000013.1.
DR AlphaFoldDB; Q0YR38; -.
DR OrthoDB; 5717231at2; -.
DR UniPathway; UPA00671; -.
DR Proteomes; UP000004162; Unassembled WGS sequence.
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; 1.20.89.20; -; 1.
DR Gene3D; 3.40.50.1980; Nitrogenase molybdenum iron protein domain; 3.
DR Gene3D; 1.10.8.550; Proto-chlorophyllide reductase 57 kD subunit B; 1.
DR HAMAP; MF_00353; ChlB_BchB; 1.
DR InterPro; IPR013580; LI-POR_suB-like_C.
DR InterPro; IPR000510; Nase/OxRdtase_comp1.
DR InterPro; IPR042298; P-CP_red_C.
DR InterPro; IPR005969; Protochl_reductB.
DR InterPro; IPR016209; Protochlorophyllide_Rdtase.
DR NCBIfam; TIGR01278; DPOR_BchB; 1.
DR PANTHER; PTHR33712; LIGHT-INDEPENDENT PROTOCHLOROPHYLLIDE REDUCTASE SUBUNIT B; 1.
DR PANTHER; PTHR33712:SF7; LIGHT-INDEPENDENT PROTOCHLOROPHYLLIDE REDUCTASE SUBUNIT B; 1.
DR Pfam; PF00148; Oxidored_nitro; 1.
DR Pfam; PF08369; PCP_red; 1.
DR PIRSF; PIRSF000163; PCP_ChlB; 1.
DR SUPFAM; SSF53807; Helical backbone' metal receptor; 1.
PE 3: Inferred from homology;
KW 4Fe-4S {ECO:0000256|ARBA:ARBA00022485, ECO:0000256|HAMAP-Rule:MF_00353};
KW ATP-binding {ECO:0000256|ARBA:ARBA00022840, ECO:0000256|HAMAP-
KW Rule:MF_00353};
KW Bacteriochlorophyll biosynthesis {ECO:0000256|ARBA:ARBA00023181,
KW ECO:0000256|HAMAP-Rule:MF_00353};
KW Chlorophyll biosynthesis {ECO:0000256|ARBA:ARBA00023171, ECO:0000256|HAMAP-
KW Rule:MF_00353};
KW Iron {ECO:0000256|ARBA:ARBA00023004, ECO:0000256|HAMAP-Rule:MF_00353};
KW Iron-sulfur {ECO:0000256|ARBA:ARBA00023014, ECO:0000256|HAMAP-
KW Rule:MF_00353};
KW Metal-binding {ECO:0000256|ARBA:ARBA00022723, ECO:0000256|HAMAP-
KW Rule:MF_00353};
KW Nucleotide-binding {ECO:0000256|ARBA:ARBA00022741, ECO:0000256|HAMAP-
KW Rule:MF_00353};
KW Oxidoreductase {ECO:0000256|ARBA:ARBA00023002, ECO:0000256|HAMAP-
KW Rule:MF_00353};
KW Photosynthesis {ECO:0000256|ARBA:ARBA00022531, ECO:0000256|HAMAP-
KW Rule:MF_00353}; Reference proteome {ECO:0000313|Proteomes:UP000004162}.
FT DOMAIN 12..422
FT /note="Nitrogenase/oxidoreductase component 1"
FT /evidence="ECO:0000259|Pfam:PF00148"
FT DOMAIN 486..530
FT /note="Light-independent protochlorophyllide reductase
FT subunit B-like C-terminal"
FT /evidence="ECO:0000259|Pfam:PF08369"
FT REGION 445..483
FT /note="Disordered"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT COMPBIAS 465..480
FT /note="Polar residues"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT ACT_SITE 292
FT /note="Proton donor"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00353"
FT BINDING 36
FT /ligand="[4Fe-4S] cluster"
FT /ligand_id="ChEBI:CHEBI:49883"
FT /ligand_note="ligand shared with heterodimeric partner"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00353"
FT BINDING 428..429
FT /ligand="substrate"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00353"
SQ SEQUENCE 535 AA; 58778 MW; 4E4D5C44C03EDB71 CRC64;
MRLAFWLYEG TALHGISRVT NSMKGVHTVY HAPQGDDYIT ATYTMLERTP AFPGLSISVV
RGRDLAQGVS RLPSTLQQVE HHYHPELTVI APSCSTALLQ EDLHQLAAHS GVPQEKLLVY
ALNPFRVSEN ESADGLFTEL VKRYAAPQEK TAAPSVNLLG FTSLGFHLRA NLTSLRRMLQ
TLGVTVNVVA PWGAGIDDLG KLPAAWLNIA PYREIGTTAA GYLADKFSMP AIYEAPIGVE
PTLAWLRSVI DQINRVGAER GVPPITMPKL HNFSLDGINA PSGVPWFART ADMESFSNKR
AFVFGDATHT VGIVKFLKDE LGMKIIGAGT YLEQHADWVR KELEGYLPGE LMVTDKFQDV
SKVIDEEMPD LVCGTQMERH ACRKLDVPCM VICPPTHIEN HLLGYYPFFG FDGSDVIADR
VYLSCKLGLE KHLIDFFGDA GLEYEESTSS GEPHEALSAV TTGNGHAPHG VTSESEQGSG
EGDMIWTDDA ETMLKKVPFF VRKKVRKNTE TFARENGATQ VSVEVFRQAK ESLGG
//
