. "\"Catalysis of the transfer of hydrogen ions from one side of a membrane to the other.\" [GOC:ai]" . . "hydrogen ion transmembrane transporter activity" . "proton transporter activity" . "Reactome:REACT_100267 \"Endosome acidification, Bos taurus\"" . "Reactome:REACT_100622 \"Endosome acidification, Plasmodium falciparum\"" . "Reactome:REACT_103509 \"Protons are translocated from the intermembrane space to the matrix, Taeniopygia guttata\"" . "Reactome:REACT_103825 \"Endosome acidification, Gallus gallus\"" . "Reactome:REACT_107684 \"Endosome acidification, Rattus norvegicus\"" . "Reactome:REACT_107970 \"Protons are translocated from the intermembrane space to the matrix, Bos taurus\"" . "Reactome:REACT_108933 \"Protons are translocated from the intermembrane space to the matrix, Oryza sativa\"" . "Reactome:REACT_1985 \"Enzyme-bound ATP is released, Homo sapiens\"" . "Reactome:REACT_2002 \"Endosome acidification, Homo sapiens\"" . "Reactome:REACT_25268 \"Acidification of Tf:TfR1 containing endosome, Homo sapiens\"" . "Reactome:REACT_29417 \"Enzyme-bound ATP is released, Bos taurus\"" . "Reactome:REACT_29424 \"Protons are translocated from the intermembrane space to the matrix, Gallus gallus\"" . "Reactome:REACT_33554 \"Endosome acidification, Schizosaccharomyces pombe\"" . "Reactome:REACT_34522 \"Endosome acidification, Sus scrofa\"" . "Reactome:REACT_6312 \"Protons are translocated from the intermembrane space to the matrix, Homo sapiens\"" . "Reactome:REACT_77087 \"Protons are translocated from the intermembrane space to the matrix, Sus scrofa\"" . "Reactome:REACT_77222 \"Enzyme-bound ATP is released, Canis familiaris\"" . "Reactome:REACT_79096 \"Endosome acidification, Dictyostelium discoideum\"" . "Reactome:REACT_79130 \"Enzyme-bound ATP is released, Mus musculus\"" . "Reactome:REACT_81591 \"Endosome acidification, Taeniopygia guttata\"" . "Reactome:REACT_82120 \"Enzyme-bound ATP is released, Gallus gallus\"" . "Reactome:REACT_84002 \"Endosome acidification, Mus musculus\"" . "Reactome:REACT_86695 \"Endosome acidification, Drosophila melanogaster\"" . "Reactome:REACT_87088 \"Endosome acidification, Xenopus tropicalis\"" . "Reactome:REACT_88718 \"Enzyme-bound ATP is released, Rattus norvegicus\"" . "Reactome:REACT_88914 \"Protons are translocated from the intermembrane space to the matrix, Canis familiaris\"" . "Reactome:REACT_89361 \"Protons are translocated from the intermembrane space to the matrix, Arabidopsis thaliana\"" . "Reactome:REACT_90226 \"Protons are translocated from the intermembrane space to the matrix, Xenopus tropicalis\"" . "Reactome:REACT_91476 \"Protons are translocated from the intermembrane space to the matrix, Mus musculus\"" . "Reactome:REACT_93236 \"Enzyme-bound ATP is released, Danio rerio\"" . "Reactome:REACT_93447 \"Protons are translocated from the intermembrane space to the matrix, Danio rerio\"" . "Reactome:REACT_94558 \"Endosome acidification, Danio rerio\"" . "Reactome:REACT_95835 \"Endosome acidification, Arabidopsis thaliana\"" . "Reactome:REACT_96838 \"Endosome acidification, Saccharomyces cerevisiae\"" . "Reactome:REACT_97023 \"Endosome acidification, Caenorhabditis elegans\"" . "Reactome:REACT_97452 \"Endosome acidification, Oryza sativa\"" . "Reactome:REACT_97485 \"Enzyme-bound ATP is released, Sus scrofa\"" . "Reactome:REACT_98826 \"Endosome acidification, Canis familiaris\"" . "Reactome:REACT_99893 \"Protons are translocated from the intermembrane space to the matrix, Rattus norvegicus\"" . .