Figure 3. Hsc70 residues that mediate CHIP-TPR/Hsc70-lid interactions modulate CHIP-mediated ubiquitination.
(A) Western blot with anti-GST antibody to detect ubiquitination of wild type (WT) and mutant GST~Hsc70395-646 (GST~Hsc70-SBDβ-lid-tail) constructs by wild type CHIP1-303.
(B) Pull-down of wild type (WT) and mutant GST~Hsc70395-646 constructs by wild type His6-CHIP1-303 bound to Ni2+ mag-sepharose beads analyzed by SDS PAGE with Coomassie staining. Lanes indicate the GST~Hsc70395-646 and CHIP1-303 components utilized (INPUT), the final wash fraction (Wash) and the elution fraction (Elute).