AC   MF_01354;
DC   Protein; auto
TR   HAMAP; MF_01354; -; 1; level=0
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Names: NDH1_NDH1O
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ID   NDHO
DE   RecName: Full=NAD(P)H-quinone oxidoreductase subunit O;
DE            EC=7.1.1.-;
DE   AltName: Full=NAD(P)H dehydrogenase I subunit O;
DE            Short=NDH-1 subunit O;
DE            Short=NDH-O;
GN   Name=ndhO;
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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.
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-1 can be composed of about 15 different subunits;
CC       different subcomplexes with different compositions have been identified
CC       which probably have different functions.
case <OC:Gloeobacter>
CC   -!- SUBCELLULAR LOCATION: Cell inner membrane; Peripheral membrane protein;
CC       Cytoplasmic side.
else
CC   -!- SUBCELLULAR LOCATION: Cellular thylakoid membrane; Peripheral membrane
CC       protein; Cytoplasmic side.
end case
CC   -!- SIMILARITY: Belongs to the complex I NdhO subunit family.
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KW   Membrane
KW   NAD
KW   NADP
KW   Plastoquinone
KW   Quinone
KW   Transport
case <OC:Gloeobacter>
KW   Cell membrane
KW   Cell inner membrane
else
KW   Thylakoid
end case
KW   Translocase
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GO   GO:0016655; F:oxidoreductase activity, acting on NAD(P)H, quinone or similar compound as acceptor
case <OC:Gloeobacter>
GO   GO:0005886; C:plasma membrane
else
GO   GO:0042651; C:thylakoid membrane
end case
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FT   None
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Size: 70-87;
Related: None;
Template: P74771;
Scope:
 Bacteria; Cyanobacteriota
 Plastid
Fusion:
 Nter: None
 Cter: None
Duplicate: None
Plasmid: None
Comments: One of a number of subunits unique to cyanobacteria and
 plastids, it is nuclearly encoded in angiosperms.
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# Revision 1.15 2023/06/15
//