Recombinant Human MICB His-tag Protein, CF

Catalog # Availability Size / Price Qty
10431-MB-050
Recombinant Human MICB His-tag Protein Binding Activity
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Recombinant Human MICB His-tag Protein, CF Summary

Product Specifications

Accession #
N-terminal Sequence
Analysis
Ala23 & Glu24
Predicted Molecular Mass
33 kDa
SDS-PAGE
35-55 kDa, under reducing conditions

Product Datasheets

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10431-MB

Carrier Free

What does CF mean?

CF stands for Carrier Free (CF). We typically add Bovine Serum Albumin (BSA) as a carrier protein to our recombinant proteins. Adding a carrier protein enhances protein stability, increases shelf-life, and allows the recombinant protein to be stored at a more dilute concentration. The carrier free version does not contain BSA.

What formulation is right for me?

In general, we advise purchasing the recombinant protein with BSA for use in cell or tissue culture, or as an ELISA standard. In contrast, the carrier free protein is recommended for applications, in which the presence of BSA could interfere.

10431-MB

Formulation Lyophilized from a 0.2 μm filtered solution in PBS.
Reconstitution Reconstitute at 500 μg/mL in PBS.
Shipping The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below.
Stability & Storage: Store the unopened product at -20 to -70 °C. Use a manual defrost freezer and avoid repeated freeze-thaw cycles. Do not use past expiration date.

Scientific Data

Binding Activity Recombinant Human MICB His-tag Protein Binding Activity View Larger

When Recombinant Human NKG2D/CD314 Fc Chimera (Catalog # 1299-NK) is immobilized at 0.125 µg/mL, 100 µL/mL, the concentration of Recombinant Human MICB His-tag (Catalog # 10431-MB) produces 50% of the optimal binding response is approximately 80-400 ng/mL.

SDS-PAGE Recombinant Human MICB His-tag Protein SDS-PAGE View Larger

2 μg/lane of Recombinant Human MICB His-tag Protein (Catalog # 10431-MB) was resolved with SDS-PAGE under reducing (R) and non-reducing (NR) conditions and visualized by Coomassie® Blue staining, showing bands 35-55 kDa.

Reconstitution Calculator

Reconstitution Calculator

The reconstitution calculator allows you to quickly calculate the volume of a reagent to reconstitute your vial. Simply enter the mass of reagent and the target concentration and the calculator will determine the rest.

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Background: MICB

Major Histocompatibility Complex Class I Chain-related Gene B (MICB) is a transmembrane glycoprotein that functions as a ligand for human Natural-Killer Group 2 Member D (NKG2D) (1). MICB, along with the highly related MICA, are members of the non-classical MHC class I family. Similar to classical MHC class I proteins, MICB contains three Ig-like domains ( alpha 1, alpha 2, and alpha 3) in the extracellular domain (ECD), a transmembrane segment, and a carboxy-terminal cytoplasmic tail (2). The genes encoding MICA and MICB are found within the MHC on the short arm of human chromosome 6 and occur in most mammalian species but are absent from mouse and rat (2-4). Despite structural similarities, MICA/B only share ~27% amino acid (aa) identity with human MHC class I proteins (3). Both MICA and MICB display a significant degree of polymorphism within the ECD and this enables them to be reconfigured and bind with NKG2D rather than binding with beta 2-microglobulin (4, 5). Recognition of MICA/B by NKG2D results in the activation of cytolytic activity and/or cytokine production on NK cells, NKT cells, gamma δ T cells, and CD8+ alpha beta T cells (6, 7). MICA/B recognition is involved in tumor surveillance, viral infections, and autoimmune diseases. The release of soluble forms of MICA/B from tumors down-regulates NKG2D surface expression on effector cells resulting in the impairment of anti-tumor immune response (2, 8-11). Inhibition of MICA/B shedding through targeted antibodies allows anti-tumor immunity to be retained (12).

References
  1. Huang, C. et al. (2018) Sci. Rep. 8:15821.
  2. Bahram, S. et al. (1994) Proc. Natl. Acad. Sci. USA 91:6259.
  3. Cosman, D. et al. (2001) Immunity 14:123.
  4. Groh, V. et al. (2001) Nature Immunol. 2:255.
  5. Stephens, H. (2001) Trends Immunol. 22:378.
  6. Bauer, S. et al. (1999) Science 285:727.
  7. Kawabata, Y. et al. (2000). Human Immunology. 61:624.
  8. Groh, V. et al. (2002) Nature 419:734.
  9. Steinle, A. et al. (2001) Immunogenetics 53:279.
  10. Pende, D. et al. (2002) Cancer Res. 62:6178.
  11. Salih, H. et al. (2003) Blood 102:1389.
  12. Ferrari de Andrade et al. (2018) Science 359:1537.
Long Name
MHC Class I-related Protein B
Entrez Gene IDs
4277 (Human)
Alternate Names
MHC class I chain-related protein B; MHC class I mic-B antigen; MHC class I polypeptide-related sequence B; MICB; MIC-B; PERB11.2MHC class I-like molecule PERB11.2-IMX; stress inducible class I homolog

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