General Structure Information 1khu SMAD1 smad1 crystal structure reveals the details of bmp signaling pathway 2.5Å AUTH B.Y.QIN,B.M.CHACKO,S.S.LAM,M.P.DE CAESTECKER,AUTH 2 J.J.CORREIA,K.LINTITL STRUCTURAL BASIS OF SMAD1 ACTIVATION BY RECEPTORTITL 2 KINASE PHOSPHORYLATION.REF MOL.CELL V. 8 1303 2001REFN ISSN 1097-2765PMID 11779505DOI 10.1016/S1097-2765(01)00417-8 Variant Set Distributions Mapped Variants