ID   NDHH_SYNS9              Reviewed;         394 AA.
AC   Q3AVZ9;
DT   05-MAY-2009, integrated into UniProtKB/Swiss-Prot.
DT   22-NOV-2005, sequence version 1.
DT   25-MAY-2022, entry version 107.
DE   RecName: Full=NAD(P)H-quinone oxidoreductase subunit H {ECO:0000255|HAMAP-Rule:MF_01358};
DE            EC=7.1.1.- {ECO:0000255|HAMAP-Rule:MF_01358};
DE   AltName: Full=NAD(P)H dehydrogenase subunit H;
DE   AltName: Full=NADH-plastoquinone oxidoreductase subunit H {ECO:0000255|HAMAP-Rule:MF_01358};
DE   AltName: Full=NDH-1 subunit H {ECO:0000255|HAMAP-Rule:MF_01358};
DE            Short=NDH-H {ECO:0000255|HAMAP-Rule:MF_01358};
GN   Name=ndhH {ECO:0000255|HAMAP-Rule:MF_01358};
GN   OrderedLocusNames=Syncc9902_2112;
OS   Synechococcus sp. (strain CC9902).
OC   Bacteria; Cyanobacteria; Synechococcales; Synechococcaceae; Synechococcus;
OC   unclassified Synechococcus.
OX   NCBI_TaxID=316279;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=CC9902;
RA   Copeland A., Lucas S., Lapidus A., Barry K., Detter J.C., Glavina T.,
RA   Hammon N., Israni S., Pitluck S., Martinez M., Schmutz J., Larimer F.,
RA   Land M., Kyrpides N., Ivanova N., Richardson P.;
RT   "Complete sequence of Synechococcus sp. CC9902.";
RL   Submitted (AUG-2005) to the EMBL/GenBank/DDBJ databases.
CC   -!- FUNCTION: NDH-1 shuttles electrons from an unknown electron donor, via
CC       FMN and iron-sulfur (Fe-S) centers, to quinones in the respiratory
CC       and/or the photosynthetic chain. The immediate electron acceptor for
CC       the enzyme in this species is believed to be plastoquinone. Couples the
CC       redox reaction to proton translocation, and thus conserves the redox
CC       energy in a proton gradient. Cyanobacterial NDH-1 also plays a role in
CC       inorganic carbon-concentration. {ECO:0000255|HAMAP-Rule:MF_01358}.
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         Evidence={ECO:0000255|HAMAP-Rule:MF_01358};
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         Evidence={ECO:0000255|HAMAP-Rule:MF_01358};
CC   -!- SUBUNIT: NDH-1 can be composed of about 15 different subunits;
CC       different subcomplexes with different compositions have been identified
CC       which probably have different functions. {ECO:0000255|HAMAP-
CC       Rule:MF_01358}.
CC   -!- SUBCELLULAR LOCATION: Cellular thylakoid membrane {ECO:0000255|HAMAP-
CC       Rule:MF_01358}; Peripheral membrane protein {ECO:0000255|HAMAP-
CC       Rule:MF_01358}; Cytoplasmic side {ECO:0000255|HAMAP-Rule:MF_01358}.
CC   -!- SIMILARITY: Belongs to the complex I 49 kDa subunit family.
CC       {ECO:0000255|HAMAP-Rule:MF_01358}.
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DR   EMBL; CP000097; ABB27070.1; -; Genomic_DNA.
DR   RefSeq; WP_011360854.1; NC_007513.1.
DR   AlphaFoldDB; Q3AVZ9; -.
DR   SMR; Q3AVZ9; -.
DR   STRING; 316279.Syncc9902_2112; -.
DR   EnsemblBacteria; ABB27070; ABB27070; Syncc9902_2112.
DR   KEGG; sye:Syncc9902_2112; -.
DR   eggNOG; COG0649; Bacteria.
DR   HOGENOM; CLU_015134_1_2_3; -.
DR   OMA; IMGTSME; -.
DR   OrthoDB; 473681at2; -.
DR   Proteomes; UP000002712; Chromosome.
DR   GO; GO:0031676; C:plasma membrane-derived thylakoid membrane; IEA:UniProtKB-SubCell.
DR   GO; GO:0051287; F:NAD binding; IEA:InterPro.
DR   GO; GO:0016655; F:oxidoreductase activity, acting on NAD(P)H, quinone or similar compound as acceptor; IEA:UniProtKB-UniRule.
DR   GO; GO:0048038; F:quinone binding; IEA:UniProtKB-KW.
DR   GO; GO:0019684; P:photosynthesis, light reaction; IEA:UniProtKB-UniRule.
DR   Gene3D; 1.10.645.10; -; 1.
DR   HAMAP; MF_01358; NDH1_NuoD; 1.
DR   InterPro; IPR001135; NADH_Q_OxRdtase_suD.
DR   InterPro; IPR014029; NADH_UbQ_OxRdtase_49kDa_CS.
DR   InterPro; IPR022885; NDH1_su_D/H.
DR   InterPro; IPR029014; NiFe-Hase_large.
DR   PANTHER; PTHR11993; PTHR11993; 1.
DR   Pfam; PF00346; Complex1_49kDa; 1.
DR   SUPFAM; SSF56762; SSF56762; 1.
DR   PROSITE; PS00535; COMPLEX1_49K; 1.
PE   3: Inferred from homology;
KW   Membrane; NAD; NADP; Plastoquinone; Quinone; Reference proteome; Thylakoid;
KW   Translocase; Transport.
FT   CHAIN           1..394
FT                   /note="NAD(P)H-quinone oxidoreductase subunit H"
FT                   /id="PRO_0000371935"
SQ   SEQUENCE   394 AA;  45054 MW;  99E39BDB2DBBF1E1 CRC64;
     MTQLETRTEP MVVNFGPHHP SMHGVLRLVV TLDGEDVVDC EPVIGYLHRG MEKIAENRTN
     VMFVPYVSRM DYAAGMFYEA VVVNAPEKLA NIPVPKRASY IRVLMLELNR IANHLLWLGP
     FLADVGAQTP FFYIFREREM IYDLWEAATG QRLINNNYFR IGGVAADLPW GWLEKCRDFC
     DWFAPKIDEY EKLITNNPIF RRRIEGLGTI ETKDAINWSL SGPMLRASGV PWDLRKVDHY
     ECYDDFDWQV AWEKEGDCFA RYRVRIEEMR QSLKILRQAC DMIPGGPTEN LEAKRLNEGK
     GSEAAGFDFQ YVAKKVAPTF KIPNGELYTR LESGKGEIGV FLQGNNDVTP WRFKIRAADS
     NNLQILPHIL KGHKVADIMA ILGSIDVIMG SVDR