P20649.3
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UniProt Primary Accession #
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UniProt Secondary Accession #
UniProt Related Accession #
NCBI Official Full Name
ATPase 1, plasma membrane-type
NCBI Official Synonym Symbols
AHA1; F19F24.16; F19F24_16; H(+)-ATPase 1; HA1; OPEN STOMATA 2; OST2; PLASMA MEMBRANE PROTON ATPASE; PMA [Similar Products]
NCBI Protein Information
H(+)-ATPase 1
UniProt Protein Name
ATPase 1, plasma membrane-type
UniProt Synonym Protein Names
Proton pump 1
UniProt Entry Name
PMA1_ARATH
NCBI Summary for HA1
Encodes a plasma membrane proton ATPase. Mutants have a reduced ability to close their stomata in response to drought and are affected in stomatal but not seed responsiveness to ABA.
UniProt Comments for HA1
Function: The plasma membrane H+ ATPase of plants and fungi generates a proton gradient that drives the active transport of nutrients by H+-symport. The resulting external acidification and/or internal alkinization may mediate growth responses.
Catalytic activity: ATP + H2O + H+(In) = ADP + phosphate + H+(Out).
Subunit structure: Binds to 14-3-3 proteins. The binding is induced by phosphorylation of Thr-948. Binding to 14-3-3 proteins activates the H+-ATPase
By similarity. Interacts with PPI1; this interaction promotes ATPase activity. Ref.5 Ref.7
Subcellular location: Cell membrane; Multi-pass membrane protein
Probable.
Post-translational modification: Phosphorylation level varies significantly during early response to general elicitors.
Sequence similarities: Belongs to the cation transport ATPase (P-type) (TC 3.A.3) family. Type IIIA subfamily. [View classification]
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Pathways associated with HA1 recombinant protein
Organs/Tissues associated with HA1 recombinant protein
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