Protein
Potassium-transporting ATPase ATP-binding subunit
Organism
Halobacterium salinarum (strain ATCC 29341 / DSM 671 / R1)
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 (By similarity). The Kdp system is essential for growth under K(+) limitation, and for survival under desiccation and salt crystal inclusion (PubMed:18633573, PubMed:23757278).
Similarity
Belongs to the cation transport ATPase (P-type) (TC 3.A.3) family. Type IA subfamily.
Sequence
MAEITVTIDTDQQKQAISDSFAKLDPQYLVKNPVLFVVELGTIIGLVMTIAPGLFGATGSRVYYAVITVLLGFTVIFANYAEAYAELEGEAQADSLRALQTEAEGKLLQNDDVDIEDISEDDYEVVASTEIEQDAVVFVDEGDIIPRDGTVVEGSASVDESAITGESEPVIRQSGGDRTSVVGGTEVLSDRIKVEVTSEEGESFLDQMIGLVEDAQRQKTPNEIAMTILLSGLTLVFVVAVATMFFFGEYLASFVGGFAGLDVAELVALLVALMPTTIGALLAAIRVAGMTRVTRRNVIAKSGRAVEAAGDLDALILDKTGTITTGERVAQDFHPLGDADDADVVRASYQSSLYDETTEGRSIVKLAEKMNGKVQTDGGQSASEELDEPGDSVDAPRDVSVTLDAEGLSESNFVPFSAETRMSGIDLSDGTEIRKGAVDAVEEYATTVPGKLRQKSNAISESGGTPLAIAVDGQVVGIIELQDELKPGIADRIAEIQKMGVETIMATGDNQRTARWVADQVGIDEFHAEFDPEEKIELVEDIQDDGKLVGMTGDGTNDAPALAKADVGLAMNAGTNAAKEAGNMVDLDSNPSKIIEVVGIGKQLLMTRGSLTTFSVANDVAKYFVLLPAILAAAIPGLGAMDILNLSTPASAVTATLMYNAFIIPLLIPLALRGVDYKAQSGAQLLRKNLIVYGGGGLIAPFIFIKAIDMLFVALGVFQ