PMID- 30484251 OWN - NLM STAT- MEDLINE DCOM- 20190729 LR - 20190729 IS - 0065-2598 (Print) IS - 0065-2598 (Linking) VI - 1104 DP - 2018 TI - Structure and Dynamics of Immunoglobulin G Glycoproteins. PG - 219-235 LID - 10.1007/978-981-13-2158-0_11 [doi] AB - Immunoglobulin G (IgG) is a major serum glycoprotein that exerts the role of antibody in the immune system. This multifunctional glycoprotein couples antigen recognition with a variety of effector functions promoted via interactions with various IgG-binding proteins. Given its versatile functionality, IgG has recently been used for therapeutic interventions. Evidence indicates that the carbohydrate moieties of IgG glycoproteins critically affect their antibody functions, particularly the effector functions mediated by the interactions with Fcgamma receptors (FcgammaRs). N-glycans at specific positions of FcgammaR also contribute both positively and negatively to the interactions with IgG. The integration of multilateral biophysical approaches, including X-ray crystallography, nuclear magnetic resonance spectroscopy, and molecular dynamics simulations, has provided structural insights into the mechanisms underlying the glycofunctions of this interacting system. The N-glycans of IgG and FcgammaR mediate their interactions by either strengthening or weakening the affinity on the basis of their glycoforms. Moreover, the N-glycosylation of IgG-Fc is a prerequisite to maintain the integrity of the quaternary structure of the sites interacting with the effector molecules and can also control functionally relevant local conformations. The biopharmaceutical significance of these glycan functions is discussed from a structural point of view. FAU - Yagi, Hirokazu AU - Yagi H AD - Graduate School of Pharmaceutical Sciences, Nagoya City University, Nagoya, Japan. FAU - Yanaka, Saeko AU - Yanaka S AD - Exploratory Research Center on Life and Living Systems (ExCELLS) and Institute for Molecular Science, National Institutes of Natural Sciences, Okazaki, Aichi, Japan. FAU - Kato, Koichi AU - Kato K AD - Exploratory Research Center on Life and Living Systems, National Institutes of Natural Sciences, Okazaki, Aichi, Japan. kkato@phar.nagoya-cu.ac.jp. LA - eng PT - Journal Article PT - Review PL - United States TA - Adv Exp Med Biol JT - Advances in experimental medicine and biology JID - 0121103 RN - 0 (Glycoproteins) RN - 0 (Immunoglobulin G) RN - 0 (Receptors, IgG) MH - Glycoproteins/*chemistry MH - *Glycosylation MH - Immunoglobulin G/*chemistry MH - Protein Binding MH - Receptors, IgG/*chemistry OTO - NOTNLM OT - Fcgamma receptor OT - Immunoglobulin G OT - N-linked oligosaccharide OT - Nuclear magnetic resonance spectroscopy OT - Stable isotope labeling OT - Therapeutic antibody OT - X-ray crystallography EDAT- 2018/11/30 06:00 MHDA- 2019/07/30 06:00 CRDT- 2018/11/29 06:00 PHST- 2018/11/29 06:00 [entrez] PHST- 2018/11/30 06:00 [pubmed] PHST- 2019/07/30 06:00 [medline] AID - 10.1007/978-981-13-2158-0_11 [doi] PST - ppublish SO - Adv Exp Med Biol. 2018;1104:219-235. doi: 10.1007/978-981-13-2158-0_11.