PMID- 32410186 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20240329 IS - 1867-2450 (Print) IS - 1867-2469 (Electronic) IS - 1867-2450 (Linking) VI - 12 IP - 3 DP - 2020 Jun TI - Biophysical characterization of dynamic structures of immunoglobulin G. PG - 637-645 LID - 10.1007/s12551-020-00698-1 [doi] AB - Immunoglobulin G (IgG) is a major antibody and functions as a hub linking specific antigen binding and recruitment of effector molecules typified by Fcgamma receptors (FcgammaRs). These activities are associated primarily with interactions involving its Fab and Fc sites, respectively. An IgG molecule is characterized by a multiple domain modular structure with conserved N-glycosylation in Fc. The molecule displays significant freedom in internal motion on various spatiotemporal scales. The consequent conformational flexibility and plasticity of IgG glycoproteins are functionally significant and potentially important factors for design and engineering of antibodies with enhanced functionality. In this article, experimental and computational approaches are outlined for characterizing the conformational dynamics of IgG molecules in solution. In particular, the importance of integration of these approaches is highlighted, as illustrated by dynamic intramolecular interactions between the pair of N-glycans and their proximal amino acid residues in Fc. These interactions can critically affect effector functions mediated by human IgG1 and FcgammaRIII. Further improvements in individual biophysical techniques and their integration will advance understanding of dynamic behaviors of antibodies in physiological and pathological conditions. Such understanding will provide opportunities for engineering antibodies through controlling allosteric networks in IgG molecules. FAU - Yanaka, Saeko AU - Yanaka S AUID- ORCID: 0000-0002-3513-5701 AD - Exploratory Research Center on Life and Living Systems (ExCELLS) and Institute for Molecular Science (IMS), National Institutes of Natural Sciences, 5-1 Higashiyama, Myodaiji, Okazaki, 444-8787, Japan. AD - Graduate School of Pharmaceutical Sciences, Nagoya City University, 3-1 Tanabe-dori, Mizuho-ku, Nagoya, Aichi, 467-8603, Japan. FAU - Yogo, Rina AU - Yogo R AUID- ORCID: 0000-0002-1595-0194 AD - Exploratory Research Center on Life and Living Systems (ExCELLS) and Institute for Molecular Science (IMS), National Institutes of Natural Sciences, 5-1 Higashiyama, Myodaiji, Okazaki, 444-8787, Japan. AD - Graduate School of Pharmaceutical Sciences, Nagoya City University, 3-1 Tanabe-dori, Mizuho-ku, Nagoya, Aichi, 467-8603, Japan. FAU - Kato, Koichi AU - Kato K AUID- ORCID: 0000-0001-7187-9612 AD - Exploratory Research Center on Life and Living Systems (ExCELLS) and Institute for Molecular Science (IMS), National Institutes of Natural Sciences, 5-1 Higashiyama, Myodaiji, Okazaki, 444-8787, Japan. kkatonmr@ims.ac.jp. AD - Graduate School of Pharmaceutical Sciences, Nagoya City University, 3-1 Tanabe-dori, Mizuho-ku, Nagoya, Aichi, 467-8603, Japan. kkatonmr@ims.ac.jp. LA - eng GR - JP18K14892/Ministry of Education Culture Sports Science and Technology/ GR - JP19J15602/Ministry of Education Culture Sports Science and Technology/ GR - JP19H01017/Ministry of Education Culture Sports Science and Technology/ PT - Journal Article PT - Review DEP - 20200515 PL - Germany TA - Biophys Rev JT - Biophysical reviews JID - 101498573 PMC - PMC7311591 OTO - NOTNLM OT - Antibody OT - Core fucosylation OT - Dynamic conformational ensemble OT - Fcgamma receptor OT - Immunoglobulin G OT - Molecular dynamics simulation OT - N-glycan OT - Nuclear magnetic resonance spectroscopy OT - Solution scattering OT - X-ray crystallography EDAT- 2020/05/16 06:00 MHDA- 2020/05/16 06:01 PMCR- 2020/05/15 CRDT- 2020/05/16 06:00 PHST- 2020/03/07 00:00 [received] PHST- 2020/05/01 00:00 [accepted] PHST- 2020/05/16 06:00 [pubmed] PHST- 2020/05/16 06:01 [medline] PHST- 2020/05/16 06:00 [entrez] PHST- 2020/05/15 00:00 [pmc-release] AID - 10.1007/s12551-020-00698-1 [pii] AID - 698 [pii] AID - 10.1007/s12551-020-00698-1 [doi] PST - ppublish SO - Biophys Rev. 2020 Jun;12(3):637-645. doi: 10.1007/s12551-020-00698-1. Epub 2020 May 15.