H3.X
Primate-specific variant histone H3, which constitutes a core component of nucleosomes. Nucleosomes wrap and compact DNA into chromatin, limiting DNA accessibility to the cellular machineries which require DNA as a template. Histones thereby play a central role in transcription regulation, DNA repair, DNA replication and chromosomal stability. DNA accessibility is regulated via a complex set of post-translational modifications of histones, also called histone code, and nucleosome remodeling. Belongs to the histone H3 family. Expressed at low level in some tissues, such as testis and brain. Note: This description may include information from UniProtKB.
