ID   NU6C_CALFG              Reviewed;         176 AA.
AC   Q7YJT1;
DT   20-JAN-2009, integrated into UniProtKB/Swiss-Prot.
DT   01-OCT-2003, sequence version 1.
DT   25-MAY-2022, entry version 50.
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   Calycanthus floridus var. glaucus (Eastern sweetshrub) (Calycanthus
OS   fertilis var. ferax).
OG   Plastid; Chloroplast.
OC   Eukaryota; Viridiplantae; Streptophyta; Embryophyta; Tracheophyta;
OC   Spermatophyta; Magnoliopsida; Magnoliidae; Laurales; Calycanthaceae;
OC   Calycanthus.
OX   NCBI_TaxID=212734;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RA   Goremykin V.V., Hirsch-Ernst K.I., Woelfl S., Hellwig F.H.;
RT   "The chloroplast genome of the 'basal' angiosperm Calycanthus fertilis
RT   -- structural and phylogenetic analyses.";
RL   Plant Syst. Evol. 242:119-135(2003).
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; AJ428413; CAD28775.1; -; Genomic_DNA.
DR   RefSeq; NP_862808.1; NC_004993.1.
DR   AlphaFoldDB; Q7YJT1; -.
DR   SMR; Q7YJT1; -.
DR   GeneID; 2597991; -.
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..176
FT                   /note="NAD(P)H-quinone oxidoreductase subunit 6,
FT                   chloroplastic"
FT                   /id="PRO_0000360233"
FT   TRANSMEM        10..30
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        32..52
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        61..81
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        107..127
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        152..172
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
SQ   SEQUENCE   176 AA;  19198 MW;  96162C6BAC9C8150 CRC64;
     MDLPGPIHDI LLVFLGLGLI LGGLGVVLLT NPIYSAFSLG LVLVCISLFH IPSNSYFVAA
     AQLLIYVGAV NVLIVFAVMF MNGSEYSNDF HLWTVGDGVT SLVCTSILFS LITTIWNTSW
     YGIIWTTRSN QIIEQDLTSN VQQIGIRLAT DFYLPFELIS IILLAALIGA IAMARQ