fig6
Figure 6. Bilirubin binds specifically to HSP90β. (A) Computational docking analysis (PDB: 3PRY) revealed that bilirubin localizes within the middle domain of HSP90β (residues 312-439), forming hydrogen bonds with TRP-312, ARH-338, ALA-339, PRO-340, and ARG-378; (B) MST assays confirmed the direct binding interaction between bilirubin and HSP90β.