First structural view of a substrate-bound PIKK (PI3K-related-kinase) by cryo-EM explains phosphorylation specificity toward a short amino-acid motif shared across the PIKK family and rationalizes PIKK auto-inhibition by regulatory domain.
Christina M Kelliher, Randy Lambreghts ... Jay C Dunlap
Casein kinase I, a pivotal kinase in the circadian clock encoded by ck-1a, is positively regulated by a novel RNA-binding protein that protects ck-1a transcripts from nonsense-mediated decay.
Structures of human SMG1-9 and SMG1-8-9 reveal how the SMG1 kinase active site is targeted by a specific inhibitor and provide insights into the regulation of the SMG1-8-9 kinase complex in nonsense-mediated mRNA decay.
Structures of the human ataxia-telangiectasia mutated (ATM) kinase alone and bound to the C-terminus of Nbs1 show the mechanisms underlying ATM autoinhibition and binding by a portion of the Mre11-Rad50-Nbs1 (MRN) activating complex.
