Journal
COLLECTION OF CZECHOSLOVAK CHEMICAL COMMUNICATIONS
Volume 73, Issue 5, Pages 608-615Publisher
INST ORGANIC CHEM AND BIOCHEM
DOI: 10.1135/cccc20080608
Keywords
immunoglobulin; Fc-fragment; fucose; geometry
Categories
Ask authors/readers for more resources
Glycosylation of IgG-Fc plays an important role in the activation of the immune system response. Effector functions are modulated by different degrees of deglycosylation of IgG-Fc. However, the geometry of oligosaccharides covalently bound to IgG-Fc does not seem to be in good agreement with electron density in most of the structures deposited in the Protein Data Bank. Our study of correlation between the oligosaccharide geometry, connectivity, and electron density shows several discrepancies, mainly for L-fucose. Revision of refinement of two structures containing the Fc-fragment solved at the highest resolution brings clear evidence for alpha-L-fucosylation instead of beta-L-fucosylation as it was claimed in most of the deposited structures in the Protein Data Bank containing the Fc-fragment, and also in the original structures selected for re-refinement. Our revision refinement results in a decrease in R factors, better agreement with electron density, meaningful contacts, and acceptable geometry of L-fucose.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available