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Human MICB Protein (His & Fc Tag)

PERB11.2

Catalog Number P10759-H03H
Organism Species Human
Host Human Cells
Synonyms PERB11.2
Molecular Weight The recombinant human MICB/Fc is a disulfide-linked homodimer. The reduced monomer consists of 524 amino acids and has a predicted molecular mass of 59.5 kDa. In SDS-PAGE under reducing conditions, the apparent molecular mass of rh MICB/Fc monomer is approximately 80-90 kDa due to glycosylation.
predicted N Ala 23
SDS-PAGE
Purity > 98 % as determined by SDS-PAGE
Protein Construction A DNA sequence encoding the extracellular domain of human MICB (NP_005922.2) (Met 1-Gly 298) was fused with the C-terminal polyhistidine-tagged Fc region of human IgG1 at the C-terminus.
Bio-activity Immobilized human His-NKG2D (78-216) (P10575-H07B) at 10 μg/ml (100 μl/well) can bind human MICB-Fch, The EC50 of human MICB-Fch is 15.9-37.1 ng/ml.
Research Area
Formulation Lyophilized from sterile PBS, pH 7.4
1. Normally 5 % - 8 % trehalose, mannitol and 0.01% Tween80 are added as protectants before lyophilization. Specific concentrations are included in the hardcopy of COA.
Background MHC class I polypeptide-related sequence B, also known as MICB, is a heavily glycosylated protein serving as a ligand for the type I I receptor NKG2D. MICB shares 85% amino acid identity with MICA, a closely related protein, both of which contain three extracellular immunoglobulin-like domains, but without capacity to bind peptide or interact with beta-2-microglobulin. acting as a stress-induced self-antigen, binding of MICB to the NKG2D receptor activates the cytolytic response of natural killer (NK) cells, CD8+αβ T cells, and γδ T cells on which the receptor is expressed. MICA/B are minimally expressed on normal cells, but are frequently expressed on epithelial tumors and can be induced by bacterial and viral infections. MICA/B recognition thus is involved in tumor surveillance, viral infections, and autoimmune diseases.
Reference
  • Bauer, S. et al., 1999, Science. 285:727-729.
  • Braud, V.M. et al., 1999, Curr. Opin. Immunol. 11: 100-108.
  • Groh, V. et al., 2001, Nature Immunol. 2: 255-260.
  • Stephens, H., 2001, Trends Immunol. 22: 378-385.
  • Borrego, F. et al., 2002, Mol. Immunol. 38: 637–660.
  • Groh, V. et al., 2002, Nature. 419:734-738.