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Variant histone specifically required to direct the transformation of dissociating nucleosomes to protamine in male germ cells. Entirely replaces classical histone H2B prior nucleosome to protamine transition and probably acts as a nucleosome dissociating factor that creates a more dynamic chromatin, facilitating the large-scale exchange of histones. Also expressed maternally and is present in the female pronucleus, suggesting a similar role in protamine replacement by nucleosomes at fertilization. Also found in fat cells, its function and the presence of post-translational modifications specific to such cells are still unclear. Core component of nucleosome. 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.
仅用于科研。不用于诊断过程。未经明确授权不得转售。
蛋白别名: H2B histone family, member U, (testis-specific); histone 1, H2ba; Histone H2B type 1-A; Histone H2B, testis; Testis-specific histone H2B; TSH2B.1; TSH2B1
基因别名: bA317E16.3; H2BC1; H2BFU; HIST1H2BA; STBP; TH2B; TSH2B; TSH2B.1
UniProt ID: (Human) Q96A08
Entrez Gene ID: (Human) 255626