Aim: To explore the interaction between LRP4 and SNX17 at the neuromuscular junction( NMJ) in patients with myasthenia gravis( MG). Methods: We constructed prokaryotic expression vector p ET30a-LRP4 intracellular region,transformed it into E. coli BL21( DE3) bacteria and induced expression of His-LRP4 intracellular region with relative molecular weight of about 17 800; we constructed eukaryotic expression vector p EASY-Blunt M2-SNX17,transfected it into HEK293 T cells and expressed Myc-SNX17 with relative m...