Species	Reference gene ID	Possible function	Papers / DOI
Arabidopsis	At1g16780	Pyrophosphate-energized membrane proton pump 3.	No verified direct reference in this release
Arabidopsis	At1g78920	May catalyze inorganic pyrophosphate hydrolysis and mediate H⁺ transport.	AVP2, a sequence-divergent, K(+)-insensitive H(+)-translocating inorganic pyrophosphatase from Arabidopsis.; 2000; DOI: 10.1104/pp.123.1.353; PMID: 10806252; https://pubmed.ncbi.nlm.nih.gov/10806252/