. An approximate 2.0 kb DNA frag- ment of cry2Al1 from pTZ57R/T-cry2Al1 recombinant cloning vec- tor and 5.4 kb fragment of pET22b (+) were gel eluted and purified using GeneJETTM Gel Extraction Kit (Fermentas life science, Mumbai, India). The full-length sequence of cry2Al1 gene was then ligated with pET-22b vector to generate the recombinant construct pET22b-cry2Al1
The ligated product was transformed into E. coli BL21 (DE3) pLysS and the positive clones obtained by selection
medium (LB agar supplemented with ampicillin 50 lg/ml) were
further confirmed by PCR and restriction analysis