. . . . . . . . "Proton acceptor" . "539"^^ . . "539"^^ . . "An active site occurs in NX_P51812-1 at amino acids 539 - 539." . . . . . "neXtProt gold" . . . . . . . . . "2014-09-19T00:00:00.0Z"^^ . . . "neXtProt database" . "CALIPHO project" . . . . . "1" . . .