A3YTN4 · A3YTN4_9SYNE

  • Protein
    NAD(P)H-quinone oxidoreductase subunit K
  • Gene
    ndhK
  • Status
    UniProtKB unreviewed (TrEMBL)
  • Amino acids
  • Protein existence
    Inferred from homology
  • Annotation score
    3/5

Function

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.

Caution

The sequence shown here is derived from an EMBL/GenBank/DDBJ whole genome shotgun (WGS) entry which is preliminary data.

Catalytic activity

Cofactor

[4Fe-4S] cluster (UniProtKB | Rhea| CHEBI:49883 )

Note: Binds 1 [4Fe-4S] cluster.

Features

Showing features for binding site.

TypeIDPosition(s)Description
Binding site69[4Fe-4S] cluster (UniProtKB | ChEBI)
Binding site70[4Fe-4S] cluster (UniProtKB | ChEBI)
Binding site134[4Fe-4S] cluster (UniProtKB | ChEBI)
Binding site165[4Fe-4S] cluster (UniProtKB | ChEBI)

GO annotations

AspectTerm
Cellular Componentplasma membrane respiratory chain complex I
Cellular Componentplasma membrane-derived thylakoid membrane
Molecular Function4 iron, 4 sulfur cluster binding
Molecular Functioniron ion binding
Molecular FunctionNADH dehydrogenase (ubiquinone) activity
Molecular Functionquinone binding
Biological Processaerobic respiration
Biological Processelectron transport coupled proton transport
Biological Processphotosynthesis, light reaction

Keywords

Enzyme and pathway databases

Names & Taxonomy

Protein names

  • Recommended name
    NAD(P)H-quinone oxidoreductase subunit K
  • EC number
  • Alternative names
    • NAD(P)H dehydrogenase I subunit K
    • NDH-1 subunit K
      (NDH-K
      )

Gene names

    • Name
      ndhK
    • ORF names
      WH5701_03970

Organism names

  • Taxonomic identifier
  • Strain
    • WH5701
  • Taxonomic lineage
    Bacteria > Cyanobacteriota > Cyanophyceae > Synechococcales > Synechococcaceae > Synechococcus

Accessions

  • Primary accession
    A3YTN4

Proteomes

Subcellular Location

Keywords

PTM/Processing

Keywords

Interaction

Subunit

NDH-1 can be composed of about 15 different subunits; different subcomplexes with different compositions have been identified which probably have different functions.

Family & Domains

Features

Showing features for domain.

TypeIDPosition(s)Description
Domain69-179NADH:ubiquinone oxidoreductase-like 20kDa subunit

Sequence similarities

Belongs to the complex I 20 kDa subunit family.

Phylogenomic databases

Family and domain databases

Sequence

  • Sequence status
    Complete
  • Length
    253
  • Mass (Da)
    27,064
  • Last updated
    2007-04-03 v1
  • Checksum
    45DF87050ADD3C57
MTITPSSPGTSEAPSIEALRDLRASTCNPVGAPTVTSDLSENVILTSLDDLHNWARLSSLWPLLYGTACCFIEFAALIGSRFDFDRFGLVPRSSPRQADLLITAGTVTMKMAPALVRLYEQMPEPKYVIAMGACTITGGMFSADSTTAVRGVDKLIPVDLYIPGCPPRPEAIFDAVIKLRKKVGNEALAERGNLQPTHRYLTIEHAMKAVEPIVTGAYLRAETQKAAFAAGAGLPLATPEPEALEATRSSSDA

Keywords

Sequence databases

Nucleotide SequenceProtein SequenceMolecule TypeStatus
AANO01000001
EMBL· GenBank· DDBJ
EAQ76395.1
EMBL· GenBank· DDBJ
Genomic DNA

Similar Proteins

Disclaimer

Any medical or genetic information present in this entry is provided for research, educational and informational purposes only. It is not in any way intended to be used as a substitute for professional medical advice, diagnosis, treatment or care. Our staff consists of biologists and biochemists that are not trained to give medical advice.
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