highly significantp ≤ 0.01
For p -value significance, the following convention was used: not significant (n.s.) p > 0.05, significant (*) p ≤ 0.05, highly significant (**) p ≤ 0.01, very highly significant (***) p ≤ 0.001. 3 Results 3.1 Expression and purification of GRFT Purified GRFT was identified by SDS-PAGE ( Fig. 1 A) and western blot ( Fig. 1 B) using mouse anti-His monoclonal antibody (Abcam, UK).