ID   NU6C_BUXMI              Reviewed;         176 AA.
AC   A6MM90;
DT   20-JAN-2009, integrated into UniProtKB/Swiss-Prot.
DT   24-JUL-2007, sequence version 1.
DT   25-MAY-2022, entry version 38.
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   Buxus microphylla (Littleleaf boxwood) (Japanese boxwood).
OG   Plastid; Chloroplast.
OC   Eukaryota; Viridiplantae; Streptophyta; Embryophyta; Tracheophyta;
OC   Spermatophyta; Magnoliopsida; Buxales; Buxaceae; Buxus.
OX   NCBI_TaxID=153571;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RX   PubMed=17644003; DOI=10.1016/j.ympev.2007.06.004;
RA   Hansen D.R., Dastidar S.G., Cai Z., Penaflor C., Kuehl J.V., Boore J.L.,
RA   Jansen R.K.;
RT   "Phylogenetic and evolutionary implications of complete chloroplast genome
RT   sequences of four early-diverging angiosperms: Buxus (Buxaceae),
RT   Chloranthus (Chloranthaceae), Dioscorea (Dioscoreaceae), and Illicium
RT   (Schisandraceae).";
RL   Mol. Phylogenet. Evol. 45:547-563(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; EF380351; ABQ45303.1; -; Genomic_DNA.
DR   RefSeq; YP_001294238.1; NC_009599.1.
DR   AlphaFoldDB; A6MM90; -.
DR   SMR; A6MM90; -.
DR   GeneID; 5236913; -.
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_0000360232"
FT   TRANSMEM        10..30
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        32..52
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        60..80
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;  19151 MW;  98FF6C71159F45F2 CRC64;
     MDLPGPIHDF LLVFLGSGII LGGLGVVLLT NPIFSAFSLG LVLFCISLFH IPSNSHFVAA
     AQLLIYVGAI NVLIIFAVMF TNGSEYYNDF HVWTVGDGVT SLVCTSIFVS LITTILDTSW
     YGIIWTTRSN QIIEQDLISN GQQIGIHLST DFFLPFELVS IILLVALIGA IAMARQ