Fig. 2. Hypoxia induces altered post-translational modifications of total histone populations.

Modifications of histones, associated with transcriptional activation and repression, were determined by immunoblotting of protein extracts of Hepa 1–6 cells grown under normoxia or 0.2% oxygen for 48 hrs (representative blots, Supplemental Fig. 1). Quantified values, generated by NIH image, were normalized to H3-C-terminus, and fold change (H/N) is graphed. The average was generated from quantified values, obtained by NIH image, from three independent immunoblots of three independently obtained normoxic and hypoxic extracts. Error bars denote the SEM.