Abstract
The Drosophila GAGA factor (GAF) is a multifunctional protein implicated in nucleosome organization and remodeling, activation and repression of gene expression, long distance enhancer–promoter communication, higher order chromosome structure, and mitosis. This broad range of activities poses questions about how a single protein can perform so many seemingly different and unrelated functions. Current studies argue that GAF acts as a “pioneer” factor, generating nucleosome-free regions of chromatin for different classes of regulatory elements. The removal of nucleosomes from regulatory elements in turn enables other factors to bind to these elements and carry out their specialized functions. Consistent with this view, GAF associates with a collection of chromatin remodelers and also interacts with proteins implicated in different regulatory functions. In this review, we summarize the known activities of GAF and the functions of its protein partners.
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References
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Acknowledgements
We are grateful to the Center for Precision Genome Editing and Genetic Technologies for Biomedicine IGB RAS for computer equipment. This study was supported by the Russian Science Foundation (RSF) 18-74-10091 to D.C, by the National Institutes of Health (NIH) 5R35GM126975 to P.S.
Funding
This study was supported by the Russian Science Foundation (RSF) 18-74-10091 to D.C, by the National Institutes of Health (NIH) 5R35GM126975 to P.S.
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Chetverina, D., Erokhin, M. & Schedl, P. GAGA factor: a multifunctional pioneering chromatin protein. Cell. Mol. Life Sci. 78, 4125–4141 (2021). https://doi.org/10.1007/s00018-021-03776-z
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DOI: https://doi.org/10.1007/s00018-021-03776-z