Literature summary for 7.1.2.1 extracted from

Yuan, W.; Zhang, D.; Song, T.; Xu, F.; Lin, S.; Xu, W.; Li, Q.; Zhu, Y.; Liang, J.; Zhang, J.
Arabidopsis plasma membrane H+-ATPase genes AHA2 and AHA7 have distinct and overlapping roles in the modulation of root tip H+ efflux in response to low-phosphorus stress (2017), J. Exp. Bot., 68, 1731-1741 .

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Activating Compound

Activating Compound	Comment	Organism	Structure
14-3-3 protein	the activated enzyme consists of 6 phosphorylated molecules, assembled in a hexameric structure, together with six 14-3-3 molecules	Arabidopsis thaliana
auxin	auxin regulates enzyme activity by phosphorylation	Arabidopsis thaliana

Localization

Localization	Comment	Organism	GeneOntology No.	Textmining

Natural Substrates/ Products (Substrates)

Natural Substrates	Organism	Comment (Nat. Sub.)	Natural Products	Comment (Nat. Pro.)	Rev.	Reac.
ATP + H2O + H+[side 1]	Arabidopsis thaliana	-	ADP + phosphate + H+[side 2]	-	?

Organism

Organism	UniProt	Comment	Textmining
Arabidopsis thaliana	-	ecotype Col-0	-

Posttranslational Modification

Posttranslational Modification	Comment	Organism
phosphoprotein	the enzyme is phosphorylated at Thr-947	Arabidopsis thaliana

Source Tissue

Source Tissue	Comment	Organism	Textmining
root hair	-	Arabidopsis thaliana	-

Substrates and Products (Substrate)

Substrates	Comment Substrates	Organism	Products	Comment (Products)	Rev.	Reac.
ATP + H2O + H+[side 1]	-	Arabidopsis thaliana	ADP + phosphate + H+[side 2]	-	?

Subunits

Subunits	Comment	Organism
homohexamer	-	Arabidopsis thaliana

Synonyms

Synonyms	Comment	Organism
AHA2	-	Arabidopsis thaliana
AHA7	-	Arabidopsis thaliana
plasma membrane H+-ATPase	-	Arabidopsis thaliana
PM H+-ATPase	-	Arabidopsis thaliana

Expression

Organism	Comment	Expression
Arabidopsis thaliana	the expression of isoforms AHA2 and AHA7 in roots is enhanced under low-phosphorus stress conditions	up

General Information

General Information	Comment	Organism
malfunction	isoform AHA2-deficient plants exhibit reduced primary root elongation and lower H+ efflux in the root elongation zone. Isoform AHA7-deficient plants exhibit reduced root hair density and lower H+ efflux in the root hair zone	Arabidopsis thaliana
physiological function	under low-phosphorus conditions, isoform AHA2 acts mainly to modulate primary root elongation by mediating H+ efflux in the root elongation zone, whereas isoform AHA7 plays an important role in root hair formation by mediating H+ efflux in the root hair zone	Arabidopsis thaliana

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Release 2023.1 (January 2023)