. . . . . . . . "Nucleophile" . "256"^^ . . "256"^^ . . "An active site occurs in NX_Q99504-4 at amino acids 256 - 256." . . . . . "neXtProt gold" . . . . . . . . . "2014-09-19T00:00:00.0Z"^^ . . . "neXtProt database" . "CALIPHO project" . . . . . "3" . . .