1zls | pdb_00001zls

FAB 2G12 + Man4

spinqualitylabelsall models 1zls, resolution 2.00Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 1zls is a 2 chain structure with sequence from Human. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Ligands: MAN Related: 1om3, 1op3, 1op5, 1zlu, 1zlv, 1zlw Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT 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 Human antibody 2G12 neutralizes a broad range of HIV-1 isolates. Hence, molecular characterization of its epitope, which corresponds to a conserved cluster of oligomannoses on the viral envelope glycoprotein gp120, is a high priority in HIV vaccine design. A prior crystal structure of 2G12 in complex with Man(9)GlcNAc(2) highlighted the central importance of the D1 arm in antibody binding. To characterize the specificity of 2G12 more precisely, we performed solution-phase ELISA, carbohydrate microarray analysis, and cocrystallized Fab 2G12 with four different oligomannose derivatives (Man(4), Man(5), Man(7), and Man(8)) that compete with gp120 for binding to 2G12. Our combined studies reveal that 2G12 is capable of binding both the D1 and D3 arms of the Man(9)GlcNAc(2) moiety, which would provide more flexibility to make the required multivalent interactions between the antibody and the gp120 oligomannose cluster than thought previously. These results have important consequences for the design of immunogens to elicit 2G12-like neutralizing antibodies as a component of an HIV vaccine. Dissection of the carbohydrate specificity of the broadly neutralizing anti-HIV-1 antibody 2G12.,Calarese DA, Lee HK, Huang CY, Best MD, Astronomo RD, Stanfield RL, Katinger H, Burton DR, Wong CH, Wilson IA Proc Natl Acad Sci U S A. 2005 Sep 20;102(38):13372-7. Epub 2005 Sep 7. PMID:16174734 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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