4gu8

Crystal Structure of Burkholderia oklahomensis agglutinin (BOA)

spinqualitylabelsall models 4gu8, resolution 2.40Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 4gu8 is a 8 chain structure with sequence from Burkholderia oklahomensis. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Ligands: DTT, GOL Related: 4gk9 Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Publication Abstract from PubMed Burkholderia oklahomensis EO147 agglutinin (BOA) is a 29 kDa member of the Oscillatoria agardhii agglutinin (OAA) family of lectins. Members of the OAA family recognize high-mannose glycans, and, by binding to the HIV envelope glycoprotein 120 (gp120), block the virus from binding to and entering the host cell, thereby inhibiting infection. OAA-family lectins comprise either one or two homologous domains, with a single domain possessing two glycan binding sites. We solved the structure of BOA in the ligand-free form as well as in complex with four molecules of 3alpha,6alpha-mannopentaose, the core unit of the N-linked high-mannose structures found on gp120 in vivo. This is the first structure of a double-domain OAA-family lectin in which all four binding sites are occupied by ligand. The structural details of the BOA-glycan interactions presented here, together with determination of affinity constants and HIV inactivation data, shed further light onto the structure-function relationship in this important class of anti-HIV proteins. Burkholderia oklahomensis agglutinin is a canonical two-domain OAA-family lectin: structures, carbohydrate binding and anti-HIV activity.,Whitley MJ, Furey W, Kollipara S, Gronenborn AM FEBS J. 2013 May;280(9):2056-67. doi: 10.1111/febs.12229. Epub 2013 Apr 2. PMID:23480609 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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