1. d.164.1 SMAD MH1 domain SMAD MH1 domain consists of four alpha-helices and three beta-ribbons 1ozj d1ozjb_ B:9-19,24-46,46-58,79-83,83-95 1mhd d1mhdb_ B:10-20,24-46,46-58,79-83,83-95 1ozj d1ozja_ A:9-20,24-46,46-58,79-83,83-95 1mhd d1mhda_ A:10-20,24-46,45-58,79-83,83-95