Fluorescence Anisotropy Microplate Assay to Investigate the Interaction of Full-Length Steroid Receptor Coactivator-1a with Steroid Receptors
Estrogens, acting via estrogen receptor (ER) play key roles in growth, differentiation, and gene regulation in the reproductive, central nervous, and skeletal systems. ER-mediated gene transcription contributes to the development and spread of breast, uterine, and liver cancer. Steroid receptor coactivator-1a (SRC1a) belongs to the P160 family of coactivators, which is the best known of the many coactivators implicated in ER-mediated transactivation. Binding of full-length P160 coactivators to steroid receptors has been difficult to investigate in vitro. This chapter details how to investigate the interaction of SRC1a with ER using the fluorescence anisotropy/polarization microplate assay (FAMA).
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