4DZ8

human IgG1 Fc fragment Heterodimer

4DZ8 の概要

• エントリーDOI: 10.2210/pdb4dz8/pdb
• 分子名称: Ig gamma-1 chain C region, 2-acetamido-2-deoxy-beta-D-glucopyranose-(1-2)-alpha-D-mannopyranose-(1-3)-[2-acetamido-2-deoxy-beta-D-glucopyranose-(1-2)-alpha-D-mannopyranose-(1-6)]beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-[alpha-L-fucopyranose-(1-6)]2-acetamido-2-deoxy-beta-D-glucopyranose, ... (4 entities in total)
• 機能のキーワード: fc fragment, antibody, immune system
• 由来する生物種: Homo sapiens (human); 詳細
• 細胞内の位置: Secreted: P01857 P01857
• タンパク質・核酸の鎖数: 2
• 化学式量合計: 53257.61

構造登録者

Strop, P. (登録日: 2012-02-29, 公開日: 2012-08-01, 最終更新日: 2024-10-30)

主引用文献

Strop, P.,Ho, W.H.,Boustany, L.M.,Abdiche, Y.N.,Lindquist, K.C.,Farias, S.E.,Rickert, M.,Appah, C.T.,Pascua, E.,Radcliffe, T.,Sutton, J.,Chaparro-Riggers, J.,Chen, W.,Casas, M.G.,Chin, S.M.,Wong, O.K.,Liu, S.H.,Vergara, G.,Shelton, D.,Rajpal, A.,Pons, J.
Generating Bispecific Human IgG1 and IgG2 Antibodies from Any Antibody Pair.
J.Mol.Biol., 420:204-219, 2012

PubMed Abstract: Bispecific antibodies and antibody fragments are a new class of therapeutics increasingly utilized in the clinic for T cell recruitment (catumaxomab anti-EpCAM/CD3 and blinatumomab anti-CD19/CD3), increase in the selectivity of targeting, or simultaneous modulation of multiple cellular pathways. While the clinical potential for certain bispecific antibody formats is clear, progress has been hindered because they are often difficult to manufacture, may suffer from suboptimal pharmacokinetic properties, and may be limited due to potential immunogenicity issues. Current state-of-the-art human IgG-like bispecific technologies require co-expression of two heavy chains with a single light chain, use crossover domains to segregate light chains, or utilize scFv (single-chain fragment variable)-Fc fusion. We have engineered both human IgG1 and IgG2 subtypes, with minimal point mutations, to form full-length bispecific human antibodies with high efficiency and in high purity. In our system, the two antibodies of interest can be expressed and purified separately, mixed together under appropriate redox conditions, resulting in a formation of a stable bispecific antibody with high yields. With this approach, it is not necessary to generate new antibodies that share a common light chain, therefore allowing the immediate use of an existing antibody regardless of whether it has been generated via standard hybridoma or display methods. We demonstrate the generality of the approach and show that these bispecific antibodies have properties similar to those of wild-type IgGs, and we further demonstrate the utility of the technology with an example of a CD3/CD20 bispecific antibody that effectively depletes B cells in vitro and in vivo.

PubMed: 22543237
DOI: 10.1016/j.jmb.2012.04.020

実験手法

X-RAY DIFFRACTION (1.91 Å)