The crystal structure of the complex between hen egg lysozyme and the Fv fragment of a humanized antilysozyme antibody was determined to 2.7-A resolution. The structure of the antigen combining site in the complex is nearly identical to that of the complexed form of the parent mouse antibody, D1 ...
The crystal structure of the complex between hen egg lysozyme and the Fv fragment of a humanized antilysozyme antibody was determined to 2.7-A resolution. The structure of the antigen combining site in the complex is nearly identical to that of the complexed form of the parent mouse antibody, D1.3. In contrast, the combining sites of the unliganded mouse and humanized antilysozymes show moderate conformational differences. This disparity suggests that a conformational readjustment process linked to antigen binding reverses adverse conformations in the complementarity determining regions that had been introduced by engineering these segments next to human framework regions in the humanized antibody.
Related Citations:
Structural Consequences of Humanizing an Antibody Holmes, M.A., Foote, J. (1997) J Immunol 158: 2192
Antibody Framework Residues Affecting the Conformation of the Hypervariable Loops Foote, J., Winter, G. (1992) J Mol Biol 224: 487
Organizational Affiliation:
Division of Molecular Medicine, Fred Hutchinson Cancer Research Center, Seattle, Washington 98109-1024, USA.
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