Two primers F7 and R7 were designed to clone the full length of
open reading frame (ORF) of goldfish GILT (gGILT). After digested
with BamH I and Hind III, the PCR product was cloned into the pET-28a vector (Invitrogen, Carlsbad, CA, USA) for expression as a Histagged protein. The recombinant plasmid was named pET28agGILT