ID   E0YDZ0_GLEJA            Unreviewed;       136 AA.
AC   E0YDZ0;
DT   02-NOV-2010, integrated into UniProtKB/TrEMBL.
DT   02-NOV-2010, sequence version 1.
DT   27-MAR-2024, entry version 24.
DE   RecName: Full=Light-independent protochlorophyllide reductase subunit B {ECO:0000256|ARBA:ARBA00017673};
DE            EC=1.3.7.7 {ECO:0000256|ARBA:ARBA00012713};
DE   Flags: Fragment;
GN   Name=chlB {ECO:0000313|EMBL:ADG28966.1};
OS   Gleichenia japonica (Urajiro) (Fern).
OG   Plastid; Chloroplast {ECO:0000313|EMBL:ADG28966.1}.
OC   Eukaryota; Viridiplantae; Streptophyta; Embryophyta; Tracheophyta;
OC   Polypodiopsida; Polypodiidae; Gleicheniales; Gleicheniaceae; Gleichenia.
OX   NCBI_TaxID=3274 {ECO:0000313|EMBL:ADG28966.1};
RN   [1] {ECO:0000313|EMBL:ADG28966.1}
RP   NUCLEOTIDE SEQUENCE.
RX   PubMed=20924422; DOI=10.1139/G10-061;
RA   Wolf P.G., Roper J.M., Duffy A.M.;
RT   "The evolution of chloroplast genome structure in ferns.";
RL   Genome 53:731-738(2010).
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};
CC   -!- COFACTOR:
CC       Name=[4Fe-4S] cluster; Xref=ChEBI:CHEBI:49883;
CC         Evidence={ECO:0000256|ARBA:ARBA00001966};
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}.
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DR   EMBL; HM021798; ADG28966.1; -; Genomic_DNA.
DR   AlphaFoldDB; E0YDZ0; -.
DR   GO; GO:0009507; C:chloroplast; IEA:UniProtKB-KW.
DR   GO; GO:0016491; F:oxidoreductase activity; IEA:InterPro.
DR   GO; GO:0015995; P:chlorophyll biosynthetic process; IEA:InterPro.
DR   GO; GO:0015979; P:photosynthesis; IEA:InterPro.
DR   Gene3D; 1.20.89.20; -; 1.
DR   Gene3D; 3.40.50.1980; Nitrogenase molybdenum iron protein domain; 1.
DR   Gene3D; 1.10.8.550; Proto-chlorophyllide reductase 57 kD subunit B; 1.
DR   InterPro; IPR013580; LI-POR_suB-like_C.
DR   InterPro; IPR000510; Nase/OxRdtase_comp1.
DR   InterPro; IPR042298; P-CP_red_C.
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   SUPFAM; SSF53807; Helical backbone' metal receptor; 1.
PE   3: Inferred from homology;
KW   4Fe-4S {ECO:0000256|ARBA:ARBA00022485};
KW   Chloroplast {ECO:0000313|EMBL:ADG28966.1};
KW   Iron {ECO:0000256|ARBA:ARBA00023004};
KW   Iron-sulfur {ECO:0000256|ARBA:ARBA00022485};
KW   Metal-binding {ECO:0000256|ARBA:ARBA00022485};
KW   Plastid {ECO:0000313|EMBL:ADG28966.1}.
FT   DOMAIN          1..54
FT                   /note="Nitrogenase/oxidoreductase component 1"
FT                   /evidence="ECO:0000259|Pfam:PF00148"
FT   DOMAIN          90..131
FT                   /note="Light-independent protochlorophyllide reductase
FT                   subunit B-like C-terminal"
FT                   /evidence="ECO:0000259|Pfam:PF08369"
FT   NON_TER         1
FT                   /evidence="ECO:0000313|EMBL:ADG28966.1"
SQ   SEQUENCE   136 AA;  15215 MW;  42CDEAD2D05AA044 CRC64;
     IFGTQMERHI GKRLDIPCGV ISSPVHIQNF PLGYRPFLGY EGTNQVADLV YNSFTLGMED
     HLLDVFGGHD TKEVITKSLS TGRDPIRTFE SQSELKKIPG FVRGKIKKNT EIFAKLNNIT
     EITIDVMYAA KEKLGA
//