背景：As a monomeric immunoglobulin that is predominately involved in the secondary antibody response and the only isotype that can pass through the human placenta, Immunoglobulin G (IgG) is synthesized and secreted by plasma B cells, and constitutes 75% of serum immunoglobulins in humans. IgG antibodies protect the body against the pathogens by agglutination and immobilization, complement activation, toxin neutralization, as well as the antibody-dependent cell-mediated cytotoxicity (ADCC). IgG tetramer contains two heavy chains (50 kDa ) and two light chains (25 kDa) linked by disulfide bonds, that is the two identical halves form the Y-like shape. IgG is digested by pepsin proteolysis into Fab fragment (antigen-binding fragment) and Fc fragment ("crystallizable" fragment). IgG1 is most abundant in serum among the four IgG subclasses (IgG1, 2, 3 and 4) and binds to Fc receptors (FcγR ) on phagocytic cells with high affinity. Fc fragment is demonstrated to mediate phagocytosis, trigger inflammation, and target Ig to particular tissues. Protein G or Protein A on the surface of certain Staphylococcal and Streptococcal strains specifically binds with the Fc region of IgGs, and has numerous applications in biotechnology as a reagent for affinity purification. Recombinant IgG Fc Region is suggested to represent a potential anti-inflammatory drug for treatment of human autoimmune diseases.
仕様
種由来：Human
発現宿主：Human Cells
純度：>95% as determined by reducing SDS-PAGE.
遺伝子構造：Recombinant Human Immunoglobulin Heavy Constant Gamma 3 is produced by our Mammalian expression system and the target gene encoding Glu99-Lys377 is expressed.
別名（遺伝子名）：Ig gamma-3 chain C region,IgG3 Fc
アミノ酸配列：Glu99-Lys377
アクセッションＮｏ．：P01860
エンドトキシン濃度：< 1.0 EU per ug as determined by the LAL method.
分子量：31.2 kDa
組成：Lyophilized from a 0.2 μm filtered solution of PBS, pH 7.4.
保存条件：Lyophilized proteins are stable for up to 12 months when stored at -20 to -80°C. Reconstituted protein solution can be stored at 4-8℃ for 2-7 days. Aliquots of reconstituted samples are stable at < -20℃ for 3 months.
