title: "Unraveling the tail" of how SRPK1 phosphorylates ASF/SF2.
abstract: In this issue of Molecular Cell, Ngo et al. (2008) describe the crystal structure of the SRPK1 protein kinase in complex with its substrate, the spliceosome factor ASF/SF2, providing an unprecedented view of multiple targeting mechanisms in action on a single substrate.
authors.affiliation: Program in Molecular Biology and Cancer, Samuel Lunenfeld Research Institute, Mount Sinai Hospital, 600 University Avenue, Toronto, ON M5G 1X5, Canada.
authors.forename: Daniel Y L
authors.initials: DY
authors.lastname: Mao
authors.forename: Derek F
authors.initials: DF
authors.lastname: Ceccarelli
authors.forename: Frank
authors.initials: F
authors.lastname: Sicheri
mesh_terms: D000818:Animals; D006801:Humans; D051379:Mice; D009687:Nuclear Proteins / Q000737:chemistry* / Q000235:genetics / Q000378:metabolism*; D010766:Phosphorylation; D017346:Protein Serine-Threonine Kinases / Q000737:chemistry* / Q000235:genetics / Q000378:metabolism*; D017434:Protein Structure, Tertiary; D016601:RNA-Binding Proteins; D000068103:Serine-Arginine Splicing Factors; D013379:Substrate Specificity
chemical_list: D009687:Nuclear Proteins; D016601:RNA-Binding Proteins; D000068103:Serine-Arginine Splicing Factors; C087728:SRPK1 protein, human; D017346:Protein Serine-Threonine Kinases