7owx

Structure of coiled-coil tetramer from SARS-CoV-2 spike stalk region

spinqualitylabelsall models 7owx, resolution 1.93Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 1.929Å Ligands: EDO, ZN Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Publication Abstract from PubMed Spike trimer plays a key role in SARS-CoV-2 infection and vaccine development. It consists of a globular head and a flexible stalk domain that anchors the protein into the viral membrane. While the head domain has been extensively studied, the properties of the adjoining stalk are poorly understood. Here, we characterize the coiled-coil formation and thermodynamic stability of the stalk domain and its segments. We find that the N-terminal segment of the stalk does not form coiled-coils and remains disordered in solution. The C-terminal stalk segment forms a trimeric coiled-coil in solution, which becomes significantly stabilized in the context of the full-length stalk. Its crystal structure reveals a novel antiparallel tetramer coiled-coil with an unusual combination of a-d and e-a-d hydrophobic core packing. Structural analysis shows that a subset of hydrophobic residues stabilizes different coiled-coil structures: trimer, tetramer, and heterohexamer, underscoring a highly polymorphic nature of the SARS-CoV-2 stalk sequence. Structural polymorphism of coiled-coils from the stalk domain of SARS-CoV-2 spike protein.,Zivic Z, Strmsek Z, Novinec M, Lah J, Hadzi S FASEB J. 2022 Mar;36(3):e22199. doi: 10.1096/fj.202101670R. PMID:35157347 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Spike protein 3D structures

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