ID C3VYK1_PINTA Unreviewed; 510 AA.
AC C3VYK1;
DT 16-JUN-2009, integrated into UniProtKB/TrEMBL.
DT 16-JUN-2009, sequence version 1.
DT 24-JAN-2024, entry version 54.
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:0000256|HAMAP-Rule:MF_00353};
GN ORFNames=PLC-6603 {ECO:0000313|EMBL:ACP51127.1};
OS Pinus taeda (Loblolly pine).
OG Plastid; Chloroplast {ECO:0000313|EMBL:ACP51127.1}.
OC Eukaryota; Viridiplantae; Streptophyta; Embryophyta; Tracheophyta;
OC Spermatophyta; Pinopsida; Pinidae; Conifers I; Pinales; Pinaceae; Pinus;
OC Pinus subgen. Pinus.
OX NCBI_TaxID=3352 {ECO:0000313|EMBL:ACP51127.1};
RN [1] {ECO:0000313|EMBL:ACP51127.1}
RP NUCLEOTIDE SEQUENCE.
RC STRAIN=TAED06 {ECO:0000313|EMBL:ACP51127.1};
RX PubMed=19954512; DOI=10.1186/1741-7007-7-84;
RA Parks M., Cronn R., Liston A.;
RT "Increasing phylogenetic resolution at low taxonomic levels using massively
RT parallel sequencing of chloroplast genomes.";
RL BMC Biol. 7:84-84(2009).
RN [2] {ECO:0000313|EMBL:ACP51127.1}
RP NUCLEOTIDE SEQUENCE.
RC STRAIN=TAED06 {ECO:0000313|EMBL:ACP51127.1};
RA Parks M.B., Liston A., Cronn R.C.;
RL Submitted (FEB-2011) 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 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|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 ECO:0000256|HAMAP-Rule:MF_00353}.
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, ECO:0000256|HAMAP-
CC Rule:MF_00353}.
CC -!- SUBCELLULAR LOCATION: Plastid, chloroplast {ECO:0000256|HAMAP-
CC Rule:MF_00353}.
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; FJ899561; ACP51127.1; -; Genomic_DNA.
DR UniPathway; UPA00670; -.
DR GO; GO:0009507; C:chloroplast; IEA:UniProtKB-SubCell.
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:ACP51127.1};
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:ACP51127.1}.
FT DOMAIN 12..412
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; 57801 MW; 847914763AEC4091 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 PFXXXXXXXX
XXXXVYNSFA LGMEDHLLDI FCGHDTKEIM TKSLSTDISP IWDPESRQEL GKIPRFVRDK
VKRNTEKFAR RKGILNVTVE VMHAAKEALS
//
