Figure 4.

Schematic representation of post-translational events associated with H2A, H2B, H3, and H4 proteins, highlighting their modification types in epigenetic regulation in animals. Notably, histone methylation (Me), histone phosphorylation (Ph), histone acetylation (Ac), and histone ubiquitination (Ub) are the common mechanisms involved in histone modification. In the context of shrimps, previous investigations have identified specific histone modification patterns, including H3K4, H3K9, and H3K27 methylation; H3K14 and H4 acetylation; and H3S10, H3S28, H2A, and H4 phosphorylation [15,148,149,150]. These modifications play critical roles in regulating gene expression and contribute to various biological processes in shrimps.