ID CHLN_PINKO Reviewed; 470 AA.
AC Q85WU5;
DT 21-JUN-2005, integrated into UniProtKB/Swiss-Prot.
DT 01-JUN-2003, sequence version 1.
DT 13-SEP-2023, entry version 66.
DE RecName: Full=Light-independent protochlorophyllide reductase subunit N {ECO:0000255|HAMAP-Rule:MF_00352};
DE Short=DPOR subunit N {ECO:0000255|HAMAP-Rule:MF_00352};
DE Short=LI-POR subunit N {ECO:0000255|HAMAP-Rule:MF_00352};
DE EC=1.3.7.7 {ECO:0000255|HAMAP-Rule:MF_00352};
GN Name=chlN {ECO:0000255|HAMAP-Rule:MF_00352};
OS Pinus koraiensis (Korean pine).
OG Plastid; Chloroplast.
OC Eukaryota; Viridiplantae; Streptophyta; Embryophyta; Tracheophyta;
OC Spermatophyta; Pinopsida; Pinidae; Conifers I; Pinales; Pinaceae; Pinus;
OC Pinus subgen. Strobus.
OX NCBI_TaxID=88728;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=KangWon16;
RA Noh E.W., Lee J.S., Choi Y.I., Han M.S., Yi Y.S., Han S.U.;
RT "Complete nucleotide sequence of Pinus koraiensis.";
RL Submitted (FEB-2003) 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:0000255|HAMAP-Rule:MF_00352}.
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_00352};
CC -!- COFACTOR:
CC Name=[4Fe-4S] cluster; Xref=ChEBI:CHEBI:49883;
CC Evidence={ECO:0000255|HAMAP-Rule:MF_00352};
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:0000255|HAMAP-Rule:MF_00352};
CC -!- PATHWAY: Porphyrin-containing compound metabolism; chlorophyll
CC biosynthesis (light-independent). {ECO:0000255|HAMAP-Rule:MF_00352}.
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:0000255|HAMAP-Rule:MF_00352}.
CC -!- SUBCELLULAR LOCATION: Plastid, chloroplast.
CC -!- SIMILARITY: Belongs to the BchN/ChlN family. {ECO:0000255|HAMAP-
CC Rule:MF_00352}.
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DR EMBL; AY228468; AAO74124.1; -; Genomic_DNA.
DR RefSeq; NP_817276.1; NC_004677.2.
DR AlphaFoldDB; Q85WU5; -.
DR SMR; Q85WU5; -.
DR GeneID; 806976; -.
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; cd01979; Pchlide_reductase_N; 1.
DR Gene3D; 3.40.50.1980; Nitrogenase molybdenum iron protein domain; 3.
DR HAMAP; MF_00352; ChlN_BchN; 1.
DR InterPro; IPR000510; Nase/OxRdtase_comp1.
DR InterPro; IPR005970; Protochl_reductN.
DR NCBIfam; TIGR01279; DPOR_bchN; 1.
DR PANTHER; PTHR39429; LIGHT-INDEPENDENT PROTOCHLOROPHYLLIDE REDUCTASE SUBUNIT N; 1.
DR PANTHER; PTHR39429:SF3; LIGHT-INDEPENDENT PROTOCHLOROPHYLLIDE REDUCTASE SUBUNIT N; 1.
DR Pfam; PF00148; Oxidored_nitro; 1.
DR PIRSF; PIRSF000162; P_chlorophyll_rd; 1.
DR SUPFAM; SSF53807; Helical backbone' metal receptor; 1.
PE 3: Inferred from homology;
KW 4Fe-4S; ATP-binding; Chlorophyll biosynthesis; Chloroplast; Iron;
KW Iron-sulfur; Metal-binding; Nucleotide-binding; Oxidoreductase;
KW Photosynthesis; Plastid.
FT CHAIN 1..470
FT /note="Light-independent protochlorophyllide reductase
FT subunit N"
FT /id="PRO_0000208619"
FT BINDING 22
FT /ligand="[4Fe-4S] cluster"
FT /ligand_id="ChEBI:CHEBI:49883"
FT /ligand_note="ligand shared with heterodimeric partner"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00352"
FT BINDING 47
FT /ligand="[4Fe-4S] cluster"
FT /ligand_id="ChEBI:CHEBI:49883"
FT /ligand_note="ligand shared with heterodimeric partner"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00352"
FT BINDING 107
FT /ligand="[4Fe-4S] cluster"
FT /ligand_id="ChEBI:CHEBI:49883"
FT /ligand_note="ligand shared with heterodimeric partner"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00352"
SQ SEQUENCE 470 AA; 53498 MW; 792AB397E1C72CA2 CRC64;
MSTKIDETIT FECETGNYHT FCPISCVSWL YQKIEDSFFL VVGTKTCGYF LQNALGVMIF
AEPRYAMAEL EEGDISAHLN DYEELKTLCI RIRKDRDPSV IIWIGTCTTE IIKMDLEGMA
PKLEYEIGVP ILVARANGLD YAFTQGEDTV LAVMAHRCPE QEFPIGESKE TKTKTKLFPF
PLLKEKKLVE YANHPPLVIF GSLPSNLVSQ LDTELRRQFI KVSGWLPAQR YADLPSLGDG
VYVCGVNPFL SRTATTLIRR KKCELIVAPF PIGPDGTRAW IERICPVFGI EAQSLEEREE
RIWESLKDYL DLVRGKSVFF MGDNLLEISL ARFLIRCGMI VYEIGIPYMD KRYQAAELAL
LKDTCIRMCI PIPRIVEKPD NSNQIRRMRE LQPDLAITGM AHANPLGARG IGTKWSVEFT
FAQIHGFANA RDVLELVTRP LRRNENLDNL DRTTLVRNNN EFYTSTPTPR
//
