. . . . . . . . "Only 5% of wild-type choline uptake activity." . "451"^^ . . "451"^^ . . "Mutagenesis site occurs in NX_Q9GZV3-1 at amino acids 451 - 451." . . . . . "neXtProt gold" . . . . . . . . . "2014-09-19T00:00:00.0Z"^^ . . . "neXtProt database" . "CALIPHO project" . . . . . "1" . . .