A4SZG8 · KDPB_POLAQ

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.

169150100150200250300350400450500550600650
TypeIDPosition(s)Description
Active site3194-aspartylphosphate intermediate
Binding site356ATP (UniProtKB | ChEBI)
Binding site360ATP (UniProtKB | ChEBI)
Binding site389-396ATP (UniProtKB | ChEBI)
Binding site407ATP (UniProtKB | ChEBI)
Binding site530Mg2+ (UniProtKB | ChEBI)
Binding site534Mg2+ (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
      Pnuc_1669

Organism names

Accessions

  • Primary accession
    A4SZG8

Proteomes

Subcellular Location

Cell inner membrane
; Multi-pass membrane protein

Features

Showing features for transmembrane.

TypeIDPosition(s)Description
Transmembrane35-55Helical
Transmembrane64-84Helical
Transmembrane225-245Helical
Transmembrane266-286Helical
Transmembrane600-620Helical
Transmembrane628-648Helical
Transmembrane671-691Helical

Keywords

PTM/Processing

Features

Showing features for chain.

TypeIDPosition(s)Description
ChainPRO_10000788631-691Potassium-transporting ATPase ATP-binding subunit

Keywords

Interaction

Subunit

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

Structure

Family & Domains

Sequence similarities

Keywords

Phylogenomic databases

Family and domain databases

Sequence

  • Sequence status
    Complete
  • Length
    691
  • Mass (Da)
    73,380
  • Last updated
    2007-05-15 v1
  • Checksum
    4BA7623D3F6DC1C4
MTKRKLGMFDAELVKPAIVDSFRKLSPSIQWRNPVMFVVYIGSILTTLLWIQSLYGEGEASSSFILGVMLWLWFTVLFANFAEALAEGRSKAQAASLRGLKKETWAKKVKAANIPENWDNRPASELVSATQLRKGDIFIAEANDVIAADGEVIAGVASVDESAITGESAPVIRESGGDFSSVTGGTRVLSDWIVVRVTVNPGETFIDRMISMVENAKRQKTPNEIALTILLVALTIVFLVVVATLLPFSMFSVAASGSGSPIQITVLIALLVCLIPTTIAGLLSAIGVAGMSRMMAANVIATSGRAVEAAGDVDVLLLDKTGTITLGNRQASNFVAASGVTEAELADIAQLASLADETPEGRSIVVLAKQKFNIREREINSIGAQFVPFTAQTRMSGVDMNGEQIRKGAASAIQKHIESLGGHFPQEVLKAVDDVSRRGSTPLVVSQGTRVMGVVELKDIVKGGIKERFNELRQMGIRTIMITGDNKLTAAAIAAEAGVDDFLAEATPEDKLALIRKHQSEGRLVAMTGDGTNDAPALAQADVAVAMNSGTQAAKEAGNMVDLDSNPTKLIEVVETGKQMLMTRGSLTTFSIANDVAKYFAIIPAAFVATYPQLEALNVMHLSSPSSAILSAVIFNALIIIFLIPLALKGVTYKPLGAAALLRRNMTIYGLGGLIAPFIGIKIIDLIISVI

Sequence databases

Nucleotide SequenceProtein SequenceMolecule TypeStatus
CP000655
EMBL· GenBank· DDBJ
ABP34882.1
EMBL· GenBank· DDBJ
Genomic DNA

Genome annotation databases

Similar Proteins

Disclaimer

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