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Oncogenic BRAF alleles are both necessary and sufficient for cellular transformation, suggesting that chemical inhibition of the activated mutant protein kinase may reverse the tumor phenotype. Here, we report the characterization of SB-590885, a novel triarylimidazole that selectively inhibits Raf kinases with more potency towards B-Raf than c-Raf.(More)
Receptor-interacting protein kinase 3 (RIP3 or RIPK3) has emerged as a central player in necroptosis and a potential target to control inflammatory disease. Here, three selective small-molecule compounds are shown to inhibit RIP3 kinase-dependent necroptosis, although their therapeutic value is undermined by a surprising, concentration-dependent induction(More)
Druggability assessment of a target protein has emerged in recent years as an important concept in hit-to-lead optimization. A reliable and physically relevant measure of druggability would allow informed decisions on the risk of investing in a particular target. Here, we define "druggability" as a quantitative estimate of binding sites and affinities for a(More)
A previous experimentally defined model for the fibril formed from the core residues of the beta-amyloid (Abeta) peptides of Alzheimer's disease, 10YEVHHQKLVFFAEDVGSNKGAIIGLM, Abeta(10-35) using spectroscopic and scattering analyses reports on the average structure, benefiting immensely from the homogeneous assembly of Abeta(10-35). However, the energetic(More)
The important anticancer drug Taxol (paclitaxel) binds to tubulin in a stoichiometric ratio and promotes its assembly into microtubules. The conformation of microtubule-bound drug has been the subject of intense study, and various suggestions have been made. In this work we present experimental and theoretical evidence that Taxol adopts a T-shaped(More)
The great progress made in defining the structure of protein and peptide amyloid assemblies, particularly the arrangement of peptides in beta-sheets, is counterbalanced by the still poor understanding of the higher organization of beta-sheets within the fibril and overall fibril/fibril associations. The assembly pathway and basis of amyloid toxicity may(More)
On the basis of the coordinates of the related Newcastle disease virus (NDV) F protein, Valine-94, a determinant of measles virus (MV) cytopathicity, is predicted to lie in a cylindrical cavity with 10 A diameter located at the F neck. A 16-residue domain around V94 is functionally interchangeable between NDV and MV F, supporting our homology model.(More)
Matrix metalloproteinase 13 (MMP13) is a key enzyme implicated in the degradation of the extracellular matrix in osteoarthritis. Clinical administration of broad spectrum MMP inhibitors such as marimastat has been implicated in severe musculo-skeletal side effects. Consequently, research has been focused on designing inhibitors that selectively inhibit(More)
The important anticancer drug paclitaxel binds to the beta-subunit of the alphabeta-tubulin dimer in the microtubule in a stoichiometric ratio, promoting microtubule polymerization and stability. The conformation of microtubule-bound drug has been the subject of intense study, and various suggestions have been proposed. In previous work we presented(More)
Measles virus (MV) constitutes a principal cause of worldwide mortality, accounting for almost 1 million deaths annually. Although a live-attenuated vaccine protects against MV, vaccination efficiency of young infants is low because of interference by maternal antibodies. Parental concerns about vaccination safety further contribute to waning herd immunity(More)