part_of monovalent inorganic cation transmembrane transporter activity hydrogen ion transmembrane transporter activity proton transporter activity Reactome:REACT_6312 Reactome:REACT_79130 Reactome:REACT_88718 Reactome:REACT_29417 Reactome:REACT_97485 Reactome:REACT_88914 Reactome:REACT_97023 Reactome:REACT_33554 Reactome:REACT_34522 Reactome:REACT_1985 Catalysis of the transfer of hydrogen ions from one side of a membrane to the other. Reactome:REACT_107970 Reactome:REACT_82120 Reactome:REACT_25268 Reactome:REACT_84002 Reactome:REACT_81591 Reactome:REACT_79096 Reactome:REACT_100622 Reactome:REACT_95835 Reactome:REACT_98826 Reactome:REACT_91476 Reactome:REACT_100267 molecular_function Reactome:REACT_93236 Reactome:REACT_103509 Reactome:REACT_90226 GO:0015078 Reactome:REACT_97452 Reactome:REACT_2002 Reactome:REACT_99893 Reactome:REACT_77087 Reactome:REACT_29424 Reactome:REACT_77222 Reactome:REACT_107684 Reactome:REACT_86695 Reactome:REACT_108933 Reactome:REACT_96838 Reactome:REACT_89361 Reactome:REACT_103825 Reactome:REACT_87088 Reactome:REACT_93447 Reactome:REACT_94558 proton transport