Department of Transcription Factors, Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow, Russia.
Center for Precision Genome Editing and Genetic Technologies for Biomedicine, Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow, Russia.
Dokl Biochem Biophys. 2024 Feb;514(1):23-27. doi: 10.1134/S1607672923700643. Epub 2024 Jan 8.
The PBAF chromatin remodeling complex of the SWI/SNF family plays a critical role in the regulation of gene expression during tissue differentiation and organism development. The subunits of the PBAF complex have domains responsible for binding to N-terminal histone sequences. It determines the specificity of binding of the complex to chromatin. PHF10, a specific subunit of the PBAF complex, contains a DPF domain, which is a unique chromatin interaction domain. A PHF10 isoform that lacks the DPF domain is also present in vertebrate cells. This work shows that during neuronal and muscle differentiation of human and mouse cells, the expression of PHF10 isoforms changes: the form that does not have DPF replaces the form in which it is present. Replacement of PHF10 isoforms in the PBAF complex may affect its selectivity in the regulation of genes in differentiating cells.
SWI/SNF 家族的 PBAF 染色质重塑复合物在组织分化和生物体发育过程中基因表达的调控中起着关键作用。PBAF 复合物的亚基具有负责与组蛋白 N 端序列结合的结构域。它决定了复合物与染色质结合的特异性。PHF10 是 PBAF 复合物的一个特异性亚基,含有一个 DPF 结构域,这是一个独特的染色质相互作用结构域。在脊椎动物细胞中也存在缺乏 DPF 结构域的 PHF10 同工型。这项工作表明,在人类和小鼠细胞的神经元和肌肉分化过程中,PHF10 同工型的表达发生变化:没有 DPF 的形式取代了存在的形式。PBAF 复合物中 PHF10 同工型的替换可能会影响其在分化细胞中调节基因的选择性。