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Cell cycle-dependent acetylation of H4K4.
A–C. Unmodified H4K4 is only detectable in cells with an elongated kinetoplast (k), denoting S phase. Cells in G1/G0 contain one nucleus and one kinetoplast (1N1K). Cells in G2/M contain one nucleus and two kinetoplast (1N2K).
D–F. The H4K4ac site is detectable in all cells except G1 cell (1N1K).
G–I. α-H4 binds to histones in all cells.
