P57261 · NUOK_BUCAI

Function

function

NDH-1 shuttles electrons from NADH, via FMN and iron-sulfur (Fe-S) centers, to quinones in the respiratory chain. The immediate electron acceptor for the enzyme in this species is believed to be ubiquinone. Couples the redox reaction to proton translocation (for every two electrons transferred, four hydrogen ions are translocated across the cytoplasmic membrane), and thus conserves the redox energy in a proton gradient.

Catalytic activity

GO annotations

AspectTerm
Cellular ComponentNADH dehydrogenase complex
Cellular Componentplasma membrane
Molecular FunctionNADH:ubiquinone reductase (non-electrogenic) activity
Molecular Functionquinone binding
Biological ProcessATP synthesis coupled electron transport

Keywords

Enzyme and pathway databases

Names & Taxonomy

Protein names

  • Recommended name
    NADH-quinone oxidoreductase subunit K
  • EC number
  • Alternative names
    • NADH dehydrogenase I subunit K
    • NDH-1 subunit K

Gene names

    • Name
      nuoK
    • Ordered locus names
      BU163

Organism names

Accessions

  • Primary accession
    P57261

Proteomes

Subcellular Location

Cell membrane
; Multi-pass membrane protein

Features

Showing features for transmembrane.

TypeIDPosition(s)Description
Transmembrane4-24Helical
Transmembrane28-48Helical
Transmembrane60-80Helical

Keywords

PTM/Processing

Features

Showing features for chain.

TypeIDPosition(s)Description
ChainPRO_00001185281-100NADH-quinone oxidoreductase subunit K

Keywords

Interaction

Subunit

NDH-1 is composed of 13 different subunits. Subunits NuoA, H, J, K, L, M, N constitute the membrane sector of the complex.

Protein-protein interaction databases

Structure

Family & Domains

Sequence similarities

Belongs to the complex I subunit 4L family.

Keywords

Phylogenomic databases

Family and domain databases

Sequence

  • Sequence status
    Complete
  • Length
    100
  • Mass (Da)
    11,180
  • Last updated
    2000-12-01 v1
  • Checksum
    CA9DFE6521980052
MISLFHGLFLSLILFILGLTSLIVRRNILFILISLEIMMNAVGLALIVVGSYWHQADGQIMYIFVITLAASEASIALALLLQLYRRKKTLNIDILSEMNG

Keywords

Sequence databases

Nucleotide SequenceProtein SequenceMolecule TypeStatus
BA000003
EMBL· GenBank· DDBJ
BAB12881.1
EMBL· GenBank· DDBJ
Genomic DNA

Genome annotation databases

Similar Proteins

Disclaimer

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