CHLN_CHLAT
ID CHLN_CHLAT Reviewed; 478 AA.
AC Q19V53;
DT 18-MAR-2008, integrated into UniProtKB/Swiss-Prot.
DT 20-FEB-2007, sequence version 2.
DT 03-AUG-2022, entry version 54.
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 Chlorokybus atmophyticus (Soil alga).
OG Plastid; Chloroplast.
OC Eukaryota; Viridiplantae; Streptophyta; Chlorokybophyceae; Chlorokybales;
OC Chlorokybaceae; Chlorokybus.
OX NCBI_TaxID=3144;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=SAG 48.80;
RX PubMed=17222354; DOI=10.1186/1741-7007-5-2;
RA Lemieux C., Otis C., Turmel M.;
RT "A clade uniting the green algae Mesostigma viride and Chlorokybus
RT atmophyticus represents the deepest branch of the Streptophyta in
RT chloroplast genome-based phylogenies.";
RL BMC Biol. 5:2-2(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; DQ422812; ABD62180.2; -; Genomic_DNA.
DR RefSeq; YP_001019172.1; NC_008822.1.
DR AlphaFoldDB; Q19V53; -.
DR SMR; Q19V53; -.
DR GeneID; 4783259; -.
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..478
FT /note="Light-independent protochlorophyllide reductase
FT subunit N"
FT /id="PRO_0000324035"
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 478 AA; 53597 MW; 955D56E38373FF11 CRC64;
MSAMTSDTLT FECETGNYHT FCPISCVAWL YQKIEDSFFL VIGTKTCGYF LQNALGVMIF
AEPRYAMAEL EEGDISAQLN DYQELKRLCT QIKQDRNPSV IVWIGTCTTE IIKMDLEGMA
PKIEQEIKIP IVVARANGLD YAFTQGEDTV LAAMVERCPG ETKLSEQSQD KGSSKQNFSS
TKGLFSILNF NKKAAADTQP QEAEDYIDHP PLVLFGSLPG PVVSQLTLEL KRQKIKVSGW
LPSQRYTDLP AVGKGVYVCG VNPFLSRTAT ILMRRRKCKL IGAPFPIGPD GTRAWVEKIC
SVFNVEPIGL AERENKIWEG LEDYLQLVRG KSVFFMGDNL LEVSLARFLT RCGMIVYEIG
IPYMDKRYQA AELALLEKTC QEMGVPMPRI VEKPDNYNQI QRIRELQPDL AITGMAHANP
LEARGISTKW SVEFTFAQIH GFTNARDILE LVTRPLRRNN SLEGLGWTSL VKEGVLSN
