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CHLN_PLETE
ID   CHLN_PLETE              Reviewed;         462 AA.
AC   A6YGA5;
DT   18-MAR-2008, integrated into UniProtKB/Swiss-Prot.
DT   21-AUG-2007, sequence version 1.
DT   03-AUG-2022, entry version 55.
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   Pleurastrum terricola (Filamentous green alga) (Leptosira terrestris).
OG   Plastid; Chloroplast.
OC   Eukaryota; Viridiplantae; Chlorophyta; core chlorophytes; Chlorophyceae;
OC   CS clade; Chlamydomonadales; Pleurastraceae; Pleurastrum.
OX   NCBI_TaxID=34116;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=CCAP 463/2 / UTEX 333;
RX   PubMed=17610731; DOI=10.1186/1471-2164-8-213;
RA   de Cambiaire J.-C., Otis C., Turmel M., Lemieux C.;
RT   "The chloroplast genome sequence of the green alga Leptosira terrestris:
RT   multiple losses of the inverted repeat and extensive genome rearrangements
RT   within the Trebouxiophyceae.";
RL   BMC Genomics 8:213-213(2007).
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; EF506945; ABO69321.1; -; Genomic_DNA.
DR   RefSeq; YP_001382182.1; NC_009681.1.
DR   AlphaFoldDB; A6YGA5; -.
DR   SMR; A6YGA5; -.
DR   GeneID; 5383783; -.
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   HAMAP; MF_00352; ChlN_BchN; 1.
DR   InterPro; IPR000510; Nase/OxRdtase_comp1.
DR   InterPro; IPR005970; Protochl_reductN.
DR   Pfam; PF00148; Oxidored_nitro; 1.
DR   PIRSF; PIRSF000162; P_chlorophyll_rd; 1.
DR   TIGRFAMs; TIGR01279; DPOR_bchN; 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..462
FT                   /note="Light-independent protochlorophyllide reductase
FT                   subunit N"
FT                   /id="PRO_0000324037"
FT   BINDING         24
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         49
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         109
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   462 AA;  52259 MW;  8333CFF8E2BFCFC0 CRC64;
     MTATFKKEVN LVFECETGNY HTFCPISCVA WLYQKIEDSF FLVIGTKTCG YFLQNALGVM
     IFAEPRYAMA ELEEGDISAQ LNDYKELKRL CLQIKQDRNP SVIVWIGTCT TEIIKMDLEG
     MAPRLESEID IPIVVARANG LDYAFTQGED TVLAAMVNRC PKKDQLTKPL QAVSFIDTDS
     LQKEKGPKYD SINHDKDLVL FGSLPSTVVT QLNLELQRQD IKVSGWLPSQ RYSDLPILDS
     GVYVCGVNPF LSRTAATLMR RRKCKLIGAP FPIGPDGTRA WVEKICSVFG KQPQGLEQRE
     AEIWKGLEDY LQLVRGKSVF FMGDNLLEVS LARFLIRCGM IVYEIGIPYM DKRFQAAELA
     FLEKTCHDMN VPMPRIVEKP DNYNQIQRIK ELQPDLAITG MAHANPLEAR GISTKWSVEF
     TFAQIHGFTN SRDILELVTR PLRRNNSLEG SLGWTQLVKS TV
 
 
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