1aif

ANTI-IDIOTYPIC FAB 409.5.3 (IGG2A) FAB FROM MOUSE

spinqualitylabelsall models 1aif, resolution 2.90Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 1aif is a 4 chain structure with sequence from Mus musculus. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 2.9Å Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function IGKC_MOUSE 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 The crystal structure of anti-idiotopic Fab 409.5.3, made against an E2 specific feline infectious peritonitis virus-neutralizing antibody 730.1.4, has been determined in its free from, at 2.9 A resolution by molecular replacement. This antibody, used as an immmunogen, elicits the production of anti-anti-idiotypic antibodies that in turn neutralize the virus. The structure of the uncomplexed Fab was refined using constrained-restrained least squares minimization and simulated annealing in combination with conjugate gradient techniques to a crystallographic R of 0.22 based on 16,482 unique reflections between 20.0 and 2.9 A. The free antiidiotypic Fab shows, when compared to its complexed form, a 5 degrees rotation of its variable light with respect to its variable heavy domain and rearrangement of complementarity determining region loops, which permits optimization of the stereocomplementarity between interacting molecules. This finding supports the induced fit hypothesis for antibody antigen interaction. Structure of an anti-idiotypic Fab against feline peritonitis virus-neutralizing antibody and a comparison with the complexed Fab.,Ban N, Escobar C, Hasel KW, Day J, Greenwood A, McPherson A FASEB J. 1995 Jan;9(1):107-14. PMID:7821749 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Antibody 3D structures Sandbox 20009 3D structures of non-human antibody

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