SPN1, a multifunctional player in the chromatin context
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Spn1 was initially identified as a transcription factor that copurified with Spt6. Spn1 functions in transcription initiation and elongation, mRNA processing and export, histone modification, as well as in heterochromatic silencing. Our recent study demonstrated that Spn1 could bind histones and assemble nucleosomes in vitro. Therefore, Spn1 is a new member of the histone chaperone family. Here we found that Spt6 regulates Spn1-nucleosome interaction and conversely, Spn1 regulates Spt6-H2A-H2B interaction. Co-regulation between Spn1 and Spt6 enables them to be independent histone chaperones in ...