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The arginine-serine (RS)-rich domain of the SR protein ASF/SF2 is phosphorylated by SR protein kinases (SRPKs) and Clk/Sty kinases. However, the mode of phosphorylation by these kinases and their coordination in the biological regulation of ASF/SF2 is unknown. Here, we report the crystal structure of an active fragment of human SRPK1 bound to a peptide derived from an SR protein. This structure led...
Molecular diversity via alternative splicing is important for cellular function and development. SR proteins are strong candidate regulators of alternative splicing because they can modulate splice site selection. However, endogenous substrates for SR proteins are largely unknown, and their roles as splicing regulators in vertebrate development are unclear. Here we report that Cre-mediated conditional...
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