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Annotation rule MF_01353
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General rule information [?]

Accession MF_01353
Dates 4-SEP-2008 (Created)
12-JAN-2021 (Last updated, Version 13)
Name NDH1_NDH1N
Scope
Bacteria; Cyanobacteria
Plastid
Template P74069 (NDHN_SYNY3)
Triggered by

Propagated annotation [?]


Identifier, protein and gene names [?]

Identifier
NDHN
Protein name
RecName: Full=NAD(P)H-quinone oxidoreductase subunit N;
EC 7.1.1.-;
AltName: Full=NAD(P)H dehydrogenase I subunit N;
Short=NDH-1 subunit N;
Short=NDH-N;
Gene name
ndhN

Comments [?]

Function NDH-1 shuttles electrons from an unknown electron donor, via FMN and iron-sulfur (Fe-S) centers, to quinones in the respiratory and/or the photosynthetic chain. The immediate electron acceptor for the enzyme in this species is believed to be plastoquinone. Couples the redox reaction to proton translocation, and thus conserves the redox energy in a proton gradient. Cyanobacterial NDH-1 also plays a role in inorganic carbon-concentration.
Catalytic activity RHEA:42608: a plastoquinone + (n+1) H(+)(in) + NADH = a plastoquinol + n H(+)(out) + NAD(+)
RHEA:42612: a plastoquinone + (n+1) H(+)(in) + NADPH = a plastoquinol + n H(+)(out) + NADP(+)
Subunit NDH-1 can be composed of about 15 different subunits; different subcomplexes with different compositions have been identified which probably have different functions.
case <OC:Gloeobacter>
Subcellular location Cell inner membrane; Peripheral membrane protein; Cytoplasmic side.
else
Subcellular location Cellular thylakoid membrane; Peripheral membrane protein; Cytoplasmic side.
end case
Similarity Belongs to the complex I NdhN subunit family.

Keywords [?]

Membrane
NAD
NADP
Plastoquinone
Quinone
Transport
case <OC:Gloeobacter>
Cell membrane
Cell inner membrane
else
Thylakoid
end case
Translocase

Gene Ontology [?]

GO:0016655; Molecular function: oxidoreductase activity, acting on NAD(P)H, quinone or similar compound as acceptor.
case <OC:Gloeobacter>
GO:0005886; Cellular component: plasma membrane.
else
GO:0042651; Cellular component: thylakoid membrane.
end case

Additional information [?]

Size range 147-162 amino acids
Related rules None
Fusion None
Comments One of a number of subunits unique to cyanobacteria and plastids, it is nuclearly encoded in angiosperms.


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