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Reference: Cai Y, et al. (2005) The mammalian YL1 protein is a shared subunit of the TRRAP/TIP60 histone acetyltransferase and SRCAP complexes. J Biol Chem 280(14):13665-70

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Abstract


The multiprotein mammalian TRRAP/TIP60-containing histone acetyltransferase (HAT) complex performs critical functions in a variety of cellular processes including transcriptional activation, double strand DNA break repair, and apoptosis. We previously isolated the TRRAP/TIP60 complex from HeLa cells (Cai, Y., Jin, J., Tomomori-Sato, C., Sato, S., Sorokina, I., Parmely, T. J., Conaway, R. C., and Conaway, J. W. (2003) J. Biol. Chem. 278, 42733-42736). Analysis of proteins present in preparations of the TRRAP/TIP60 complex led to the identification of several new subunits, as well as several potential subunits including the YL1 protein. Here we present evidence that the YL1 protein is a previously unrecognized subunit of the TRRAP/TIP60 HAT complex. In addition, we present evidence that YL1 is also a component of a novel mammalian multiprotein complex that includes the SNF2-related helicase SRCAP and resembles the recently described Saccharomyces cerevisiae SWR1 chromatin remodeling complex. Taken together, our findings identify the YL1 protein as a new subunit of the TRRAP/TIP60 HAT complex, and they suggest that YL1 plays multiple roles in chromatin modification and remodeling in cells.

Reference Type
Journal Article
Authors
Cai Y, Jin J, Florens L, Swanson SK, Kusch T, Li B, Workman JL, Washburn MP, Conaway RC, Conaway JW
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