... Molecular Basis of Siah2 Substrate Specificity Given the different roles of Siah1 and Siah2 in cancer and their different cellular functions, it is important to understand the structural basis ... Furthermore, it was found that the amounts of PHD3 bound to full length Siah2 and the SBD of Siah2 were similar The comparable binding of PHD3 to full length and SBD of Siah2 suggests that the substrate ... forms of Siah1 and Siah2 SBD The SBD of Siah1 and Siah2 comprises of residues 90-282 (193 aa) and 130-322 (193 aa), respectively To avoid confusion, residue numbers for both the Siah1 and Siah2...