1k85

Solution structure of the fibronectin type III domain from Bacillus circulans WL-12 Chitinase A1.

spinqualitylabelsall models 1k85, 30 NMR models Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 1k85 is a 1 chain structure with sequence from Atcc 24. Full experimental information is available from OCA. For a guided tour on the structure components use FirstGlance. Activity: Chitinase, with EC number 3.2.1.14 Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum Evolutionary Conservation Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf. Publication Abstract from PubMed Growing evidence suggests that horizontal gene transfer plays an integral role in the evolution of bacterial genomes. One of the debated examples of horizontal gene transfer from animal to prokaryote is the fibronectin type III domain (FnIIID). Certain extracellular proteins of soil bacteria contain an unusual cluster of FnIIIDs, which show sequence similarity to those of animals and are likely to have been acquired horizontally from animals. Here we report the solution structure of the FnIIID of chitinase A1 from Bacillus circulans WL-12. To the best of our knowledge, this is the first tertiary structure to be reported for an FnIIID from a bacterial protein. The structure of the domain shows significant similarity to FnIIIDs from animal proteins. Sequence comparisons with FnIIIDs from other soil bacteria proteins show that the core-forming residues are highly conserved and, thus, are under strong evolutionary pressure. Striking similarities in the tertiary structures of bacterial FnIIIDs and their mammalian counterparts may support the hypothesis that the evolution of the FnIIID in bacterial carbohydrases occurred horizontally. The total lack of surface-exposed aromatic residues also suggests that the role of this FnIIID is different from those of other bacterial beta-sandwich domains, which function as carbohydrate-binding modules. Solution structure of the fibronectin type III domain from Bacillus circulans WL-12 chitinase A1.,Jee JG, Ikegami T, Hashimoto M, Kawabata T, Ikeguchi M, Watanabe T, Shirakawa M J Biol Chem. 2002 Jan 11;277(2):1388-97. Epub 2001 Oct 12. PMID:11600504 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Chitinase

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