4fbr

Crystal structure of the Myxococcus Xanthus hemagglutinin (MBHA)

spinqualitylabelsall models 4fbr, resolution 1.60Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 4fbr is a 1 chain structure with sequence from Myxococcus xanthus. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function MBHA_MYXXA This lectin might have a role in the differentiation of cells. Publication Abstract from PubMed Oscillatoria agardhii agglutinin homolog (OAAH) proteins belong to a recently discovered lectin family. All members contain a sequence repeat of approximately 66 amino acids, with the number of repeats varying among different family members. Apart from data for the founding member OAA, neither three-dimensional structures, information about carbohydrate binding specificities, nor antiviral activity data have been available up to now for any other members of the OAAH family. To elucidate the structural basis for the antiviral mechanism of OAAHs, we determined the crystal structures of Pseudomonas fluorescens and Myxococcus xanthus lectins. Both proteins exhibit the same fold, resembling the founding family member, OAA, with minor differences in loop conformations. Carbohydrate binding studies by NMR and x-ray structures of glycan-lectin complexes reveal that the number of sugar binding sites corresponds to the number of sequence repeats in each protein. As for OAA, tight and specific binding to alpha3,alpha6-mannopentaose was observed. All the OAAH proteins described here exhibit potent anti-HIV activity at comparable levels. Altogether, our results provide structural details of the protein-carbohydrate interaction for this novel lectin family and insights into the molecular basis of their HIV inactivation properties. Structural Insights into the Anti-HIV Activity of the Oscillatoria agardhii Agglutinin Homolog Lectin Family.,Koharudin LM, Kollipara S, Aiken C, Gronenborn AM J Biol Chem. 2012 Sep 28;287(40):33796-811. Epub 2012 Aug 4. PMID:22865886 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Agglutinin 3D structures Hemagglutinin 3D structures

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