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NU6C_CYCTA
ID   NU6C_CYCTA              Reviewed;         180 AA.
AC   A6H5P5;
DT   20-JAN-2009, integrated into UniProtKB/Swiss-Prot.
DT   24-JUL-2007, sequence version 1.
DT   25-MAY-2022, entry version 35.
DE   RecName: Full=NAD(P)H-quinone oxidoreductase subunit 6, chloroplastic;
DE            EC=7.1.1.-;
DE   AltName: Full=NAD(P)H dehydrogenase subunit 6;
DE   AltName: Full=NADH-plastoquinone oxidoreductase subunit 6;
GN   Name=ndhG;
OS   Cycas taitungensis (Prince sago) (Cycas taiwaniana).
OG   Plastid; Chloroplast.
OC   Eukaryota; Viridiplantae; Streptophyta; Embryophyta; Tracheophyta;
OC   Spermatophyta; Cycadidae; Cycadales; Cycadaceae; Cycas.
OX   NCBI_TaxID=54799;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RX   PubMed=17383970; DOI=10.1093/molbev/msm059;
RA   Wu C.-S., Wang Y.-N., Liu S.-M., Chaw S.-M.;
RT   "Chloroplast genome (cpDNA) of Cycas taitungensis and 56 cp protein-coding
RT   genes of Gnetum parvifolium: insights into cpDNA evolution and phylogeny of
RT   extant seed plants.";
RL   Mol. Biol. Evol. 24:1366-1379(2007).
CC   -!- FUNCTION: NDH shuttles electrons from NAD(P)H:plastoquinone, via FMN
CC       and iron-sulfur (Fe-S) centers, to quinones in the photosynthetic chain
CC       and possibly in a chloroplast respiratory chain. The immediate electron
CC       acceptor for the enzyme in this species is believed to be
CC       plastoquinone. Couples the redox reaction to proton translocation, and
CC       thus conserves the redox energy in a proton gradient (By similarity).
CC       {ECO:0000250}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=a plastoquinone + (n+1) H(+)(in) + NADH = a plastoquinol + n
CC         H(+)(out) + NAD(+); Xref=Rhea:RHEA:42608, Rhea:RHEA-COMP:9561,
CC         Rhea:RHEA-COMP:9562, ChEBI:CHEBI:15378, ChEBI:CHEBI:17757,
CC         ChEBI:CHEBI:57540, ChEBI:CHEBI:57945, ChEBI:CHEBI:62192;
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=a plastoquinone + (n+1) H(+)(in) + NADPH = a plastoquinol + n
CC         H(+)(out) + NADP(+); Xref=Rhea:RHEA:42612, Rhea:RHEA-COMP:9561,
CC         Rhea:RHEA-COMP:9562, ChEBI:CHEBI:15378, ChEBI:CHEBI:17757,
CC         ChEBI:CHEBI:57783, ChEBI:CHEBI:58349, ChEBI:CHEBI:62192;
CC   -!- SUBUNIT: NDH is composed of at least 16 different subunits, 5 of which
CC       are encoded in the nucleus. {ECO:0000250}.
CC   -!- SUBCELLULAR LOCATION: Plastid, chloroplast thylakoid membrane
CC       {ECO:0000250}; Multi-pass membrane protein {ECO:0000250}.
CC   -!- SIMILARITY: Belongs to the complex I subunit 6 family. {ECO:0000305}.
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DR   EMBL; AP009339; BAF65011.1; -; Genomic_DNA.
DR   RefSeq; YP_001312269.1; NC_009618.1.
DR   AlphaFoldDB; A6H5P5; -.
DR   SMR; A6H5P5; -.
DR   GeneID; 5309581; -.
DR   GO; GO:0009535; C:chloroplast thylakoid membrane; IEA:UniProtKB-SubCell.
DR   GO; GO:0016021; C:integral component of membrane; IEA:UniProtKB-KW.
DR   GO; GO:0008137; F:NADH dehydrogenase (ubiquinone) activity; IEA:InterPro.
DR   GO; GO:0048038; F:quinone binding; IEA:UniProtKB-KW.
DR   Gene3D; 1.20.120.1200; -; 1.
DR   InterPro; IPR001457; NADH_UbQ/plastoQ_OxRdtase_su6.
DR   InterPro; IPR042106; Nuo/plastoQ_OxRdtase_6_NuoJ.
DR   Pfam; PF00499; Oxidored_q3; 1.
PE   3: Inferred from homology;
KW   Chloroplast; Membrane; NAD; NADP; Plastid; Plastoquinone; Quinone;
KW   Thylakoid; Translocase; Transmembrane; Transmembrane helix; Transport.
FT   CHAIN           1..180
FT                   /note="NAD(P)H-quinone oxidoreductase subunit 6,
FT                   chloroplastic"
FT                   /id="PRO_0000360247"
FT   TRANSMEM        10..30
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        32..52
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        57..77
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        95..115
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        153..173
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
SQ   SEQUENCE   180 AA;  19625 MW;  100B3C8CD398B31E CRC64;
     MDLPGPIRDI LLVPLELGLI LGGLEVVLLT NIIYSALSLG PVLVCISLLY ILLNADFVAA
     AQILIYVGAV NVLIVFAVML MNNQKYPNFV PLWTVGDGIT LVVCTSLFCS LITIILNTSW
     SEISMTTKSN QILEQDLTNN VQRIGAHLST DFFLPFELLS IILLVALVGA ITIARREEIV
 
 
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