ID   NDHH_SECCE              Reviewed;          90 AA.
AC   P27758;
DT   01-AUG-1992, integrated into UniProtKB/Swiss-Prot.
DT   01-AUG-1992, sequence version 1.
DT   25-MAY-2022, entry version 82.
DE   RecName: Full=NAD(P)H-quinone oxidoreductase subunit H, chloroplastic;
DE            EC=7.1.1.-;
DE   AltName: Full=NAD(P)H dehydrogenase subunit H;
DE   AltName: Full=NADH-plastoquinone oxidoreductase 49 kDa subunit;
DE   AltName: Full=NADH-plastoquinone oxidoreductase subunit H;
DE   Flags: Fragment;
GN   Name=ndhH;
OS   Secale cereale (Rye).
OG   Plastid; Chloroplast.
OC   Eukaryota; Viridiplantae; Streptophyta; Embryophyta; Tracheophyta;
OC   Spermatophyta; Magnoliopsida; Liliopsida; Poales; Poaceae; BOP clade;
OC   Pooideae; Triticodae; Triticeae; Hordeinae; Secale.
OX   NCBI_TaxID=4550;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RX   PubMed=2808411; DOI=10.1016/s0021-9258(19)47266-9;
RA   Prombona A., Subramanian A.R.;
RT   "A new rearrangement of angiosperm chloroplast DNA in rye (Secale cereale)
RT   involving translocation and duplication of the ribosomal rpS15 gene.";
RL   J. Biol. Chem. 264:19060-19065(1989).
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}; Peripheral membrane protein {ECO:0000250}; Stromal side
CC       {ECO:0000250}.
CC   -!- SIMILARITY: Belongs to the complex I 49 kDa subunit family.
CC       {ECO:0000305}.
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DR   EMBL; X14557; CAA32694.1; -; Genomic_DNA.
DR   PIR; C34435; C34435.
DR   AlphaFoldDB; P27758; -.
DR   SMR; P27758; -.
DR   GO; GO:0009535; C:chloroplast thylakoid membrane; IEA:UniProtKB-SubCell.
DR   GO; GO:0016651; F:oxidoreductase activity, acting on NAD(P)H; IEA:InterPro.
DR   GO; GO:0048038; F:quinone binding; IEA:UniProtKB-KW.
DR   Gene3D; 1.10.645.10; -; 1.
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   SUPFAM; SSF56762; SSF56762; 1.
DR   PROSITE; PS00535; COMPLEX1_49K; 1.
PE   3: Inferred from homology;
KW   Chloroplast; Membrane; NAD; NADP; Plastid; Plastoquinone; Quinone;
KW   Thylakoid; Translocase; Transport.
FT   CHAIN           <1..>90
FT                   /note="NAD(P)H-quinone oxidoreductase subunit H,
FT                   chloroplastic"
FT                   /id="PRO_0000118610"
FT   NON_TER         1
FT   NON_TER         90
SQ   SEQUENCE   90 AA;  10509 MW;  B3E19D26FC84A608 CRC64;
     IVTLDGEDVI DCEPILGYLH RGMEKIAENR TIIQYLPYVT RWDYLATMFT EAITVNAPEF
     LENIQIPQRA SYIRVIMLEL SRIASHLLWL