5n83 | pdb_00005n83

Structure of the distal domain of mouse adenovirus 2 fibre, methylmercury chloride derivative

spinqualitylabelsall models 5n83, resolution 2.76Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 5n83 is a 3 chain structure with sequence from Murine adenovirus 2. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 2.76Å Ligands: HG Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function E7CH51_9ADEN Publication Abstract from PubMed Murine adenovirus 2 (MAdV-2) infects cells of the mouse gastrointestinal tract. Like human adenoviruses, it is a member of the genus Mastadenovirus, family Adenoviridae. The MAdV-2 genome has a single fibre gene that expresses a 787 residue-long protein. Through analogy to other adenovirus fibre proteins, it is expected that the carboxy-terminal virus-distal head domain of the fibre is responsible for binding to the host cell, although the natural receptor is unknown. The putative head domain has little sequence identity to adenovirus fibres of known structure. In this report, we present high-resolution crystal structures of the carboxy-terminal part of the MAdV-2 fibre. The structures reveal a domain with the typical adenovirus fibre head topology and a domain containing two triple beta-spiral repeats of the shaft domain. Through glycan microarray profiling, saturation transfer difference nuclear magnetic resonance spectroscopy, isothermal titration calorimetry and site-directed mutagenesis, we show that the fibre specifically binds to the monosaccharide N-acetylglucosamine (GlcNAc). The crystal structure of the complex reveals that GlcNAc binds between the AB and CD loops at the top of each of the three monomers of the MAdV-2 fibre head. However, infection competition assays show that soluble GlcNAc monosaccharide and natural GlcNAc-containing polymers do not inhibit infection by MAdV-2. Furthermore, site-directed mutation of the GlcNAc-binding residues does not prevent the inhibition of infection by soluble fibre protein. On the other hand, we show that the MAdV-2 fibre protein binds GlcNAc-containing mucin glycans, which suggests that the MAdV-2 fibre protein may play a role in viral mucin penetration in the mouse gut. Structure and N-acetylglucosamine binding of the distal domain of mouse adenovirus 2 fibre.,Singh AK, Nguyen TH, Vidovszky MZ, Harrach B, Benko M, Kirwan A, Joshi L, Kilcoyne M, Berbis MA, Canada FJ, Jimenez-Barbero J, Menendez M, Wilson SS, Bromme BA, Smith JG, van Raaij MJ J Gen Virol. 2018 Oct 2. doi: 10.1099/jgv.0.001145. PMID:30277856 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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