6ahg | pdb_00006ahg

Trimeric structure of concanavalin A from Canavalia ensiformis

spinqualitylabelsall models 6ahg, resolution 2.83Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 6ahg is a 3 chain structure with sequence from Canavalia ensiformis. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 2.83Å Ligands: CA, CD Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function CONA_CANEN D-mannose specific lectin. Publication Abstract from PubMed Concanavalin A (ConA) interacts with carbohydrates as a lectin, and recent reports proposed its application for detecting a diversity of viruses and pathogens. Structural studies have detailed the interaction between ConA and carbohydrates and the metal coordination environment with manganese and calcium ions (Mn-Ca-ConA). In this study, ConA was crystallized with a cadmium-containing precipitant, and the refined structure indicates that Mn(2)(+) was replaced by Cd(2)(+) (Cd-Ca-ConA). The structural comparison with ConA demonstrates that the metal-coordinated residues of Cd-Ca-ConA, that is Glu8, Asp10, Asn14, Asp19, and His24, do not have conformational shifts, but residues for sugar binding, including Arg228, Tyr100, and Leu99, reorient their side chains, slightly. Previous studies demonstrated that excess cadmium ions can coordinate with other residues, including Glu87 and Glu183, which were not coordinated with Cd(2)(+) in this study. The trimeric ConA in this study coordinated Cd(2)(+) with other residues, including Asp80 and Asp82, for the complex generation. The monomers does not have specific interaction near interface regions with the other monomer, but secondary cadmium coordinated with two aspartates (Asp80 and Asp82) from monomer 1 and one aspartate (Asp16) from monomer 2. This study demonstrated that complex generation was induced via coordination with secondary Cd(2)(+) and showed the application potential regarding the design of complex formation for specific interactions with target saccharides. Cadmium-substituted concanavalin A and its trimeric complexation.,Park YR, Kim DS, Lee DH, Kang HG, Park JH, Lee SJ J Microbiol Biotechnol. 2018 Oct 19. pii: 10.4014/jmb.1809.09027. doi:, 10.4014/jmb.1809.09027. PMID:30380822 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Concanavalin 3D structures

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