CUL2 and hepatocellular carcinoma: Moreover, by interacting with the β-domain of VHL, PEA15 promoted HCC cell proliferation and migration by inhibiting VHL's interaction with the VHL/elongin C (ELOC)/elongin B (ELOB)/cullin 2 (CUL2) E3 ligase complex, destabilizing the complex and consequently activating HIF1A.