| 1KHU | D:270-443; D:270-443; D:270-443; D:270-443 | SMAD1 CRYSTAL STRUCTURE REVEALS THE DETAILS OF BMP SIGNALING PATHWAY |
| 1KHX | A:268-445 | CRYSTAL STRUCTURE OF A PHOSPHORYLATED SMAD2 |
| 1U7V | C:272-445; C:272-445; B:317-532 | CRYSTAL STRUCTURE OF THE PHOSPHORYLATED SMAD2/SMAD4 HETEROTRIMERIC COMPLEX |
| 1MJS | A:228-402 | MH2 DOMAIN OF TRANSCRIPTIONAL FACTOR SMAD3 |
| 1MK2 | A:225-402 | SMAD3 SBD COMPLEX |
| 1U7F | C:230-403; C:230-403; B:317-532 | CRYSTAL STRUCTURE OF THE PHOSPHORYLATED SMAD3/SMAD4 HETEROTRIMERIC COMPLEX |
| 1MR1 | B:319-532; B:319-532 | CRYSTAL STRUCTURE OF A SMAD4-SKI COMPLEX |
| 1YGS | A:319-532 | CRYSTAL STRUCTURE OF THE SMAD4 TUMOR SUPPRESSOR C-TERMINAL DOMAIN |
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