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A new twist to Sin3 complexes in pluripotent cells

06:39 EDT 2 Aug 2017 | Nature Publishing

Sin3a is a central component of a class of histone deacetylase-containing transcriptional co-regulatory complexes. In this issue of The EMBO Journal, Streubel et al (2017) purify Sin3a and identify a variant Sin3a complex containing Fam60a in undifferentiated embryonic stem cells (ESCs). Fam60a is a critical component of the ESC Sin3a complex since Fam60a knockdown leads to an extended G1 cell cycle phase and reduced ESC self-renewal. These exciting results open up new questions about how biochemical differences between variant Sin3a complexes may facilitate alterations in cell-specific function.

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