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作者:O'Brien, Niamh; Mizielinska, Sarah
作者单位:University of London; King's College London
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作者:Cornwall, Warren
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作者:Ehrmann, Julian F.; Grabarczyk, Daniel B.; Heinke, Maria; Deszcz, Luiza; Kurzbauer, Robert; Hudecz, Otto; Shulkina, Alexandra; Gogova, Rebeca; Meinhart, Anton; Versteeg, Gijs A.; Clausen, Tim
作者单位:Vienna Biocenter (VBC); Research Institute of Molecular Pathology (IMP); University of Vienna; Vienna Biocenter (VBC); Medical University of Vienna; Medical University of Vienna; Vienna Biocenter (VBC); Medical University of Vienna; University of Vienna; Vienna Biocenter (VBC); Max F. Perutz Laboratories (MFPL); Medical University of Vienna
摘要:Inhibitor of apoptosis proteins (IAPs) bind to pro-apoptotic proteases, keeping them inactive and preventing cell death. The atypical ubiquitin ligase BIRC6 is the only essential IAP, additionally functioning as a suppressor of autophagy. We performed a structure-function analysis of BIRC6 in complex with caspase-9, HTRA2, SMAC, and LC3B, which are critical apoptosis and autophagy proteins. Cryo-electron microscopy structures showed that BIRC6 forms a megadalton crescent shape that arcs around...
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作者:Plewnia, Amadeus; Boening, Philipp; Loetters, Stefan
作者单位:Universitat Trier
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作者:Loeffler-Henry, Karl; Kang, Changku; Sherratt, Thomas N.
作者单位:Carleton University; Seoul National University (SNU); Seoul National University (SNU)
摘要:The initial evolution of warning signals in unprofitable prey, termed aposematism, is often seen as a paradox because any new conspicuous mutant would be easier to detect than its cryptic conspecifics and not readily recognized by naive predators as defended. One possibility is that permanent aposematism first evolved through species using hidden warning signals, which are only exposed to would-be predators on encounter. Here, we present a large-scale analysis of evolutionary transitions in am...
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作者:Brainard, Jeffrey
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作者:Hunkeler, Moritz; Jin, Cyrus Y.; Fischer, Eric S.
作者单位:Harvard University; Harvard University Medical Affiliates; Dana-Farber Cancer Institute; Harvard University; Harvard Medical School
摘要:Tight regulation of apoptosis is essential for metazoan development and prevents diseases such as cancer and neurodegeneration. Caspase activation is central to apoptosis, and inhibitor of apoptosis proteins (IAPs) are the principal actors that restrain caspase activity and are therefore attractive therapeutic targets. IAPs, in turn, are regulated by mitochondria-derived proapoptotic factors such as SMAC and HTRA2. Through a series of cryo-electron microscopy structures of full-length human ba...
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作者:Munoz, Jose M.
作者单位:University of Navarra; Harvard University; Harvard Medical School; Harvard University Medical Affiliates; Massachusetts General Hospital
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作者:Giannakis, Marios; Ng, Kimmie
作者单位:Harvard University; Harvard University Medical Affiliates; Dana-Farber Cancer Institute; Harvard University; Harvard Medical School; Harvard University; Massachusetts Institute of Technology (MIT); Broad Institute
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作者:Santambrogio, Laura
作者单位:Cornell University; Weill Cornell Medicine; Cornell University; Weill Cornell Medicine; Cornell University; Weill Cornell Medicine