. . . . . . . . "Proton donor" . "434"^^ . . "434"^^ . . "An active site occurs in NX_Q9NS39-1 at amino acids 434 - 434." . . . . . "neXtProt gold" . . . . . . . . . "2014-09-19T00:00:00.0Z"^^ . . . "neXtProt database" . "CALIPHO project" . . . . . "1" . . .