ID G8J1Q0_9SPER Unreviewed; 510 AA.
AC G8J1Q0;
DT 25-JAN-2012, integrated into UniProtKB/TrEMBL.
DT 25-JAN-2012, sequence version 1.
DT 27-MAR-2024, entry version 47.
DE RecName: Full=Light-independent protochlorophyllide reductase subunit B {ECO:0000256|ARBA:ARBA00017673, 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|ARBA:ARBA00012713, ECO:0000256|HAMAP-Rule:MF_00353};
GN Name=chlB {ECO:0000313|EMBL:AET48371.1};
GN ORFNames=PCL_5403 {ECO:0000313|EMBL:AET48371.1};
OS Pinus greggii.
OG Plastid {ECO:0000313|EMBL:AET48371.1}.
OC Eukaryota; Viridiplantae; Streptophyta; Embryophyta; Tracheophyta;
OC Spermatophyta; Pinopsida; Pinidae; Conifers I; Pinales; Pinaceae; Pinus;
OC Pinus subgen. Pinus.
OX NCBI_TaxID=268873 {ECO:0000313|EMBL:AET48371.1};
RN [1] {ECO:0000313|EMBL:AET48371.1}
RP NUCLEOTIDE SEQUENCE.
RC STRAIN=GREG02 {ECO:0000313|EMBL:AET48371.1};
RX PubMed=22731878; DOI=10.1186/1471-2148-12-100;
RA Parks M., Cronn R., Liston A.;
RT "Separating the wheat from the chaff: mitigating the effects of noise in a
RT plastome phylogenomic data set from Pinus L. (Pinaceae).";
RL BMC Evol. Biol. 12:100-100(2012).
RN [2] {ECO:0000313|EMBL:ASW20733.1}
RP NUCLEOTIDE SEQUENCE.
RA Aguirre-Dugua X., Gernandt D.S.;
RT "Whole plastome assembly of three Mexican Pinus species.";
RL Submitted (APR-2017) 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 (ChlN-ChlB) is the
CC catalytic component of the complex. {ECO:0000256|ARBA:ARBA00025201}.
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|ARBA:ARBA00000802, ECO:0000256|HAMAP-
CC 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; chlorophyll
CC biosynthesis (light-independent). {ECO:0000256|ARBA:ARBA00004949}.
CC -!- SUBUNIT: Protochlorophyllide reductase is composed of three subunits;
CC ChlL, ChlN and ChlB. Forms a heterotetramer of two ChlB and two ChlN
CC subunits. {ECO:0000256|ARBA:ARBA00025959}.
CC -!- SIMILARITY: Belongs to the ChlB/BchB/BchZ family.
CC {ECO:0000256|ARBA:ARBA00008935, ECO:0000256|HAMAP-Rule:MF_00353}.
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DR EMBL; JN854198; AET48371.1; -; Genomic_DNA.
DR EMBL; KY963967; ASW20733.1; -; Genomic_DNA.
DR AlphaFoldDB; G8J1Q0; -.
DR UniPathway; UPA00670; -.
DR GO; GO:0009507; C:chloroplast; IEA:UniProtKB-KW.
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:0036068; P:light-independent chlorophyll biosynthetic process; IEA:UniProtKB-UniPathway.
DR GO; GO:0019685; P:photosynthesis, dark reaction; IEA:InterPro.
DR CDD; cd01981; Pchlide_reductase_B; 1.
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 Chlorophyll biosynthesis {ECO:0000256|ARBA:ARBA00023171, ECO:0000256|HAMAP-
KW Rule:MF_00353}; Chloroplast {ECO:0000313|EMBL:AET48371.1};
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}; Plastid {ECO:0000313|EMBL:AET48371.1}.
FT DOMAIN 12..428
FT /note="Nitrogenase/oxidoreductase component 1"
FT /evidence="ECO:0000259|Pfam:PF00148"
FT DOMAIN 462..506
FT /note="Light-independent protochlorophyllide reductase
FT subunit B-like C-terminal"
FT /evidence="ECO:0000259|Pfam:PF08369"
FT ACT_SITE 297
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 432..433
FT /ligand="substrate"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00353"
SQ SEQUENCE 510 AA; 57740 MW; CF406AC5616403B8 CRC64;
MKLAHWMYAG PAHIGTLRVA SSFKNVHAIM HAPLGDDYFN VMRSMLERER NFTPATASIV
DRHVLARGSR KRVVDHIIRK DKEEGPDLII LTPTCTSSIL QEDLKNFVDR ASIISDCNVI
FADVDHYQVN EIQAADRTLE QVVRYYLEKS HTLDQFVTDA PSVNIIGILT LGFHNRHDCR
ELRRLLKDLD IRINQIIPEG GSVEDPKNLP KARFNLIPYR EVGLMTAMYL NKEFGMPYVS
TTPMGAVDMA ECIRQIKKSL ETLAAPILSS KRVDYESYID GQTRFVSQAA WFSRSIDCQN
FTGKETVVFG DATHAASITK ILAREMGIRV SCTGTYCKHD AEWFKEQIKD FCDEIIITDD
HAEVGDIISR VEPSAIFGTQ MERHIGKRLE IPCGVISAPA HIQNFSLGYR PFLGYEGTNQ
IADLVYNSFA LGMEDHLLDI FCGHDTKEIM TKSLSTDISP IWDPESRQEL GKIPRFVRDK
VKRNTEKFAR RKGILNVTVE VMHAAKEALS
//
