The molecular weights of the recombinant protein of the cadherin repeated domain 4, 5, 6 of Bt-R3 were about 42kDa and 45kDa (with His tag) respectively. Both expressed products could not specifically bind to Bt toxic protein CrylAb.

• 表达得到了Bt-R3受体的第4，5，6个钙粘蛋白结构域重组蛋白，其分子量约为42kDa和45kDa(带His tag)，均不能有效地结合Bt毒蛋白Cry1Ab。