. . . . . . . . "Loss of exonuclease activity. Loss of endonuclease activity; when associated with N-146." . "457"^^ . . "457"^^ . . "Mutagenesis site occurs in NX_Q9Y2L1-2 at amino acids 457 - 457." . . . . . "neXtProt gold" . . . . . . . . . "2014-09-19T00:00:00.0Z"^^ . . . "neXtProt database" . "CALIPHO project" . . . . . "2" . . .