Q8A520 · Q8A520_BACTN

Function

function

Part of the high-affinity ATP-driven potassium transport (or Kdp) system, which catalyzes the hydrolysis of ATP coupled with the electrogenic transport of potassium into the cytoplasm. This subunit is responsible for energy coupling to the transport system and for the release of the potassium ions to the cytoplasm.

Catalytic activity

Features

Showing features for active site, binding site.

167750100150200250300350400450500550600650
TypeIDPosition(s)Description
Active site3044-aspartylphosphate intermediate
Binding site341ATP (UniProtKB | ChEBI)
Binding site345ATP (UniProtKB | ChEBI)
Binding site373-380ATP (UniProtKB | ChEBI)
Binding site392ATP (UniProtKB | ChEBI)
Binding site515Mg2+ (UniProtKB | ChEBI)
Binding site519Mg2+ (UniProtKB | ChEBI)

GO annotations

AspectTerm
Cellular Componentplasma membrane
Molecular FunctionATP binding
Molecular FunctionATP hydrolysis activity
Molecular Functionmagnesium ion binding
Molecular FunctionP-type potassium transmembrane transporter activity

Keywords

Enzyme and pathway databases

Names & Taxonomy

Protein names

  • Recommended name
    Potassium-transporting ATPase ATP-binding subunit
  • EC number
  • Alternative names
    • ATP phosphohydrolase [potassium-transporting] B chain
    • Potassium-binding and translocating subunit B
    • Potassium-translocating ATPase B chain

Gene names

    • Name
      kdpB
    • Ordered locus names
      BT_2424

Organism names

Accessions

  • Primary accession
    Q8A520

Proteomes

Subcellular Location

Cell inner membrane
; Multi-pass membrane protein

Features

Showing features for transmembrane.

TypeIDPosition(s)Description
Transmembrane35-56Helical
Transmembrane62-83Helical
Transmembrane216-240Helical
Transmembrane246-271Helical
Transmembrane584-607Helical
Transmembrane613-631Helical
Transmembrane651-676Helical

Keywords

PTM/Processing

Keywords

Proteomic databases

Interaction

Subunit

The system is composed of three essential subunits: KdpA, KdpB and KdpC.

Protein-protein interaction databases

Family & Domains

Sequence similarities

Keywords

Phylogenomic databases

Family and domain databases

Sequence

  • Sequence status
    Complete
  • Length
    677
  • Mass (Da)
    72,448
  • Last updated
    2003-06-01 v1
  • Checksum
    3FFFC7B5762A1ADE
MKNMKSASLFQKEQVIESLKQSFVKLNPRLMIKNPIMYTVEVATVVMLFVTLYSIINPSQGSFAYNIAVFIILFITLLFANFAEAIAEARGKAQADSLRKTREETPAKKVEGNQIVTVSSSQLKKGDVFVCEAGDVIPSDGEIIEGLASIDESAITGESAPVIREAGGDKSSVTGGTKVLSDHIKVMVTTQPGESFLDKMIALVEGASRQKTPNEIALTILLAGFTLVFVIVCVTLKPFADYSNTVITIASLISLFVCLIPTTIGGLLSAIGIAGMDRALRANVITKSGKAVETAGDIDTLLLDKTGTITIGNRKATHFHTAPGIDLHAFVENCLLSSLSDETPEGKSIVELGRESGIRMRSLNTTGARMIKFTAETKCSGVDLPDGTQIRKGAFDAIRKIVETAGNKFPEEVEKVIAAISSNGGTPLVVCVNRKVTGVIELQDIIKPGIQERFERLRKMGVKTVMVTGDNPLTAKYIAEKAGVDDFIAEAKPEDKMEYIKKEQQSGKLVAMMGDGTNDAPALAQANVGVAMNSGTQAAKEAGNMVDLDNDPTKLIEIVEIGKQLLMTRGTLTTFSIANDVAKYFAIVPALFMVAIPELAALNIMQLHSPESAILSAVIFNAIIIPILIPLALRGVQYKPIGASALLRRNLLIYGVGGVIAPFIGIKLIDLLVGLFF

Keywords

Sequence databases

Nucleotide SequenceProtein SequenceMolecule TypeStatus
AE015928
EMBL· GenBank· DDBJ
AAO77531.1
EMBL· GenBank· DDBJ
Genomic DNA

Genome annotation databases

Similar Proteins

Disclaimer

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