5vx4 | pdb_00005vx4

VP8* of a G2P[4] Human Rotavirus

spinqualitylabelsall models 5vx4, resolution 1.55Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 5vx4 is a 1 chain structure with sequence from Group a rotaviruses. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Ligands: TRS Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function [Q2VE61_9REOV] Outer capsid protein VP5*: Forms the spike "foot" and "body" and acts as a membrane permeabilization protein that mediates release of viral particles from endosomal compartments into the cytoplasm. During entry, the part of VP5* that protrudes from the virus folds back on itself and reorganizes from a local dimer to a trimer. This reorganization may be linked to membrane penetration by exposing VP5* hydrophobic region. In integrin-dependent strains, VP5* targets the integrin heterodimer ITGA2/ITGB1 for cell attachment.[SAAS:SAAS01043052] Publication Abstract from PubMed Rotaviruses (RVs) cause life-threatening diarrhea in infants and children worldwide. Recent biochemical and epidemiological studies underscore the importance of histo-blood group antigens (HBGA) as both cell attachment and susceptibility factors for the globally dominant P[4], P[6], and P[8] genotypes of human RVs. How these genotypes interact with HBGA is not known. Here, our crystal structures of P[4] and a neonate-specific P[6] VP8*s alone and in complex with H-type I HBGA reveal a unique glycan binding site that is conserved in the globally dominant genotypes and allows for the binding of ABH HBGAs, consistent with their prevalence. Remarkably, the VP8* of P[6] RVs isolated from neonates displays subtle structural changes in this binding site that may restrict its ability to bind branched glycans. This provides a structural basis for the age-restricted tropism of some P[6] RVs as developmentally regulated unbranched glycans are more abundant in the neonatal gut. Glycan recognition in globally dominant human rotaviruses.,Hu L, Sankaran B, Laucirica DR, Patil K, Salmen W, Ferreon ACM, Tsoi PS, Lasanajak Y, Smith DF, Ramani S, Atmar RL, Estes MK, Ferreon JC, Prasad BVV Nat Commun. 2018 Jul 6;9(1):2631. doi: 10.1038/s41467-018-05098-4. PMID:29980685 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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