Skip Header

You are using a version of browser that may not display all the features of this website. Please consider upgrading your browser.




P80268 - NUO2_SOLTU

(max 400 entries)x

Your basket is currently empty.

Select item(s) and click on "Add to basket" to create your own collection here
(400 entries max)


NADH-ubiquinone oxidoreductase 18 kDa subunit

Solanum tuberosum (Potato)
Reviewed - Annotation score: 2 out of 5- Experimental evidence at protein leveli


Transfer of electrons from NADH to the respiratory chain. The immediate electron acceptor for the enzyme is believed to be ubiquinone.

Catalytic activityi

NADH + ubiquinone + 5 H+(In) = NAD+ + ubiquinol + 4 H+(Out).
NADH + acceptor = NAD+ + reduced acceptor.

GO - Molecular functioni

  1. NADH dehydrogenase (ubiquinone) activity Source: UniProtKB-EC
Complete GO annotation...

Keywords - Molecular functioni


Keywords - Ligandi

NAD, Ubiquinone

Names & Taxonomyi

Protein namesi
Recommended name:
NADH-ubiquinone oxidoreductase 18 kDa subunit (EC:, EC:
Alternative name(s):
Complex I-18kD
Short name:
OrganismiSolanum tuberosum (Potato)
Taxonomic identifieri4113 [NCBI]
Taxonomic lineageiEukaryotaViridiplantaeStreptophytaEmbryophytaTracheophytaSpermatophytaMagnoliophytaeudicotyledonsGunneridaePentapetalaeasteridslamiidsSolanalesSolanaceaeSolanoideaeSolaneaeSolanum
ProteomesiUP000011115: Unplaced

Subcellular locationi

GO - Cellular componenti

  1. mitochondrial inner membrane Source: UniProtKB-SubCell
Complete GO annotation...

Keywords - Cellular componenti

Membrane, Mitochondrion, Mitochondrion inner membrane

PTM / Processingi

Molecule processing

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Chaini1 – ›30›30NADH-ubiquinone oxidoreductase 18 kDa subunitPRO_0000118850Add


Subunit structurei

Complex I is composed of about 45 different subunits.By similarity


Sequence statusi: Fragment.

P80268-1 [UniParc]FASTAAdd to Basket

« Hide

        10         20         30
Mass (Da):3,263
Last modified:February 1, 1996 - v2

Experimental Info

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Non-terminal residuei30 – 301

Sequence databases



Sequence databases

PIRi H49732.

3D structure databases

ModBasei Search...
MobiDBi Search...

Protocols and materials databases

Structural Biology Knowledgebase Search...

Family and domain databases

ProtoNeti Search...


  1. "New insights into the composition, molecular mass and stoichiometry of the protein complexes of plant mitochondria."
    Jansch L., Kruft V., Schmitz U.K., Braun H.P.
    Plant J. 9:357-368(1996) [PubMed] [Europe PMC] [Abstract]
    Cited for: PROTEIN SEQUENCE.
    Tissue: Tuber.
  2. "Purification of the NADH:ubiquinone oxidoreductase (complex I) of the respiratory chain from the inner mitochondrial membrane of Solanum tuberosum."
    Herz U., Schroeder W., Liddell A., Leaver C.J., Brennicke A., Grohmann L.
    J. Biol. Chem. 269:2263-2269(1994) [PubMed] [Europe PMC] [Abstract]
    Cited for: PROTEIN SEQUENCE OF 1-22.
    Strain: cv. Bintje.
    Tissue: Tuber.

Entry informationi

Entry nameiNUO2_SOLTU
AccessioniPrimary (citable) accession number: P80268
Entry historyi
Integrated into UniProtKB/Swiss-Prot: February 1, 1994
Last sequence update: February 1, 1996
Last modified: January 7, 2015
This is version 61 of the entry and version 2 of the sequence. [Complete history]
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programPlant Protein Annotation Program


Keywords - Technical termi

Complete proteome, Direct protein sequencing, Reference proteome

External Data

Dasty 3

Similar proteinsi

Links to similar proteins from the UniProt Reference Clusters (UniRef) at 100%, 90% and 50% sequence identity:
100%UniRef100 combines identical sequences and sub-fragments with 11 or more residues from any organism into Uniref entry.
90%UniRef90 is built by clustering UniRef100 sequences that have at least 90% sequence identity to, and 80% overlap with, the longest sequence (a.k.a seed sequence).
50%UniRef50 is built by clustering UniRef90 seed sequences that have at least 50% sequence identity to, and 80% overlap with, the longest sequence in the cluster.