Gene: Sopen06g025520

General Information

Description Encodes a H( )-translocating (pyrophosphate-energized) inorganic pyrophosphatase (H( )-PPase | EC 3.6.1.1) located in the vacuolar membrane. Expression is found in all tissues examined, including meristems and floral organ primordium. Expression is particularly enhanced in pollen, and is repressed by light. Over expression and loss of function phenotypes suggest AVP1 is involved in regulation of apoplastic pH and auxin transport. The effect on auxin transport likely involves effects of extracellular pH on subcellular localization of auxin efflux carriers such as PIN1. | AVP1 | FUNCTIONS IN: hydrogen-translocating pyrophosphatase activity | INVOLVED IN: response to water deprivation, response to salt stress, establishment or maintenance of transmembrane electrochemical gradient, leaf development, auxin polar transport | LOCATED IN: in 7 components | EXPRESSED IN: 27 plant structures | EXPRESSED DURING: 16 growth stages | CONTAINS InterPro DOMAIN/s: Inorganic H pyrophosphatase | BEST Arabidopsis thaliana protein match is: Inorganic H pyrophosphatase family protein

GO term	Evidence(s)	Provider(s)	Description	Source(s)
GO:1902600	IEA	InterPro	proton transmembrane transport

GO term	Evidence(s)	Provider(s)	Description	Source(s)
GO:0004427	IEA	InterPro	inorganic diphosphatase activity
GO:0009678	IEA	InterPro	pyrophosphate hydrolysis-driven proton transmembrane transporter activity

GO term	Evidence(s)	Provider(s)	Description	Source(s)
GO:0016020	IEA	InterPro	membrane

Experimental Evidence

Computational Reviewed Evidence

Electronic Evidence

InterPro	Description
IPR004131	Pyrophosphate-energised proton pump

Mapman id	Description
24.1.4.1	Solute transport.primary active transport.VHP PPase family.proton-translocating pyrophosphatase (VHP1)
27.6.3	Multi-process regulation.pyrophosphate homeostasis.proton-translocating pyrophosphatase (VHP1)