Regulation of the expression of proinflammatory cytokines induced by SARS-CoV-2

Figure 1 The scheme of modification of peptide tails of histones H3 and H4. “M” and “A” denote modification by methylation and acetylation, respectively; the letter “K” on the H3 tail presents activities of activation (blue; K4 and K36), and repression (red; K9 and K27). “C” and “N” represent carboxyl terminus and amino terminus, respectively.