Llama IgG2b Fc Protein, Tag Free

Source : 

Llama IgG2b Fc, Tag Free (IGB-L5204) is expressed from human 293 cells (HEK293). It contains AA Glu 1-Ser 243 (Accession # AAX73259.1).

Molecule : IgG2b Fc

Synonyms : IgG2B,IgG2b Fc

Format : Powder

Category : Other Recombinant Proteins

Accession : AAX73259.1

Storage : -20℃

Shipping condition : Powder,RT

Molecular Weight : 27.3 kDa

Characteristics :

This protein carries no “tag”. The protein has a calculated MW of 27.3 kDa. The protein migrates as 35-40 kDa under reducing (R) condition (SDS-PAGE) due to glycosylation.

Endotoxin Level : Less than 1.0 EU per μg by the LAL method.

Buffer : Tris with Glycine, Arginine and NaCl, pH7.5

Description :

Immunoglobulin G2 (IgG2) is a member of many immunoglobulin G developed and secreted by effective B cells. In wake of cutting by pepsin, IgG is divided into two F(ab)s with one antigen binding site and a high conserved Fc segment. The Fc segment bears a highly conserved N-glycosylation site. There are two members of IgG2: IgG2a and IgG2b. It was found that IgG2a was superior to IgG1 in activating complement. The glycosylation of the circulating immunoglobulin-γ (IgG) antibody molecules changes in rheumatoid arthritis. Ig gamma-2 chain Fc region contains two constant regions of IgG2 H chain (CH2, CH3).

References :

(1) Sikorav J.-L., et al., 1980, Nucleic Acids Res. 8:3143-3155.
(2) Ollo R., et al., 1981, Proc. Natl. Acad. Sci. U.S.A. 78:2442-2446.