Figure 2.
A. Immunoprecipitation of HIF-2α ubiquitination. Recombinant HIF-2α protein was immunoprecipitated with an antibody against HA-tag. Protein ubiquitination was probed with a polyclonal antibody against ubiquitin. B. CHX chase assay measurement of HIF-2α protein stability. C. Quantification of HIF-2α protein stability on the basis of data shown in B. D. Quantitative mRNA expression measurement of four hypoxia-related genes in tumor specimen from patient 1: EDN1, EPO, GLUT1, GNA14, LDHA, and VEGFA – performed by qPCR assay. A normal adrenal medulla (NM) specimen was used as a control.