A full-length cDNA coding glucokinase(GK) was cloned from Pengze crucian carp(Carassius auratus var.Pengze) by RT-PCR and rapid amplification of cDNA ends(RACE) methods.The cDNA sequence obtained is of 2 050 bp length with a 1 431 bp open reading frame(ORF) encoding 476 amino acids.The GK protein has a calculated molecular weight of 53.78 ku and isolectric point of 5.14.The main domains of GK,such as ATP-binding domain,glucose-binding amino acids,hexokinases signature,N-linked glycosylation sites,cell attac...