Synthesis and crystal structure of a phosphorylated estrogen receptor ligand binding domain

Chemical protein synthesis allows the generation of milligram quantities of correctly folded and previously inaccessible tyrosine-phosphorylated estrogen receptor a (ERa) and ß (ERß) ligand binding domains. By using this synthetic strategy, the crystal structure of a post-translationally modified nuclear receptor (pY488 ERß) could be obtained for the first time