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https://www.selleckchem.com/products/XL880(GSK1363089,EXEL-2880).html Chikungunya virus (CHIKV) causes a debilitating arthralgic inflammatory disease in humans. The multifunctional CHIKV protein, nsP1, facilitates virus RNA replication and transcription by anchoring the viral replication complex (RC) to plasma membrane vesicles and synthesizing the viral RNA 5' cap-0. Here, we report a cryo-EM structure of CHIKV nsP1 at 2.38 Å resolution. Twelve copies of nsP1 form a crown-shaped ring structure with a 7.5-nm-wide channel for mediating communication and exchange between the viral RC and the host cell. The catalytic site for viral RNA capping is located in a tunnel that is shaped by neighboring nsP1 molecules. Two membrane-association loops target nsP1 to the inner leaflet of the plasma membrane via palmitoylation and hydrophobic and electrostatic interactions. Our study provides the structural basis of viral RNA capping and RC assembly mediated by nsP1 and guides the development of antivirals targeting these essential steps of virus infection.Food shortages represent a common challenge for most animal species. As a consequence, many have evolved metabolic strategies encompassing extreme starvation-resistance capabilities, going without food for months or even years. One such strategy is to store substantial levels of fat when food is available and release these energy-rich lipids during periods of dearth. In this review, we provide an overview of the strategies and pathways underlying the extreme capacity for animals to store and mobilize lipids during nutritionally stressful environmental conditions and highlight accompanying resilience phenotypes that allow these animals to develop and tolerate such profound metabolic phenotypes.Glycans are one of the fundamental classes of macromolecules and are involved in a broad range of biological phenomena. A large variety of glycan structures can be synthesized depending on tissue or cell types and environmental changes. Her
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