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Name:
Biotinylated B7-1 Protein

Synonyms:
CD80, B7, B7-1, B7.1, BB1, CD28LG, CD28LG1, LAB7

Species Name:
Human

Label Name:
Avi Tag, His Tag

Marker Name:
Biotin

Accession:
P33681-1

Gene Id:
Val35-Asn242, with C-terminal Avi&His TagVIHVTKEVKEVATLSCGHNVSVEELAQTRIYWQKEKKMVLTMMSGDMNIWPEYKNRTIFDITNNLSIVILALRPSDEGTYECVVLKYEKDAFKREHLAEVTLSVKADFPTPSISDFEIPTSNIRRIICSTSGGFPEPHLSWLENGEELNAINTTVSQDPETELYAVSSKLDFNMTTNHSFMCLIKYGHLRVNQTFNWNTTKQEHFPDNGGGSGLNDIFEAQKIEWHEHHHHHHHH

Molecular Weight:
43-55kDa

Purity:
>95% by SDS-PAGE

Physical Appearance Name:
Lyophilized Powder

Endotoxin Name:
<0.1EU/μg

Reconstitution:
Reconstitute at 0.1-1 mg/ml according to the size in ultrapure water after rapid centrifugation.

Stability Storage:
12 months from date of receipt, -20 to -70 °C as supplied; 6 months, -20 to -70 °C under sterile conditions after reconstitution; 1 week, 2 to 8 °C under sterile conditions after reconstitution; Please avoid repeated freeze-thaw cycles.

Buffer System:
PBS, pH7.4

Quality Statement:
As the first identified B7 family member, CD80 is widely expressed in a broad spectrum of tissues, even on some malignant tumor cells, thereby suggesting the potential mechanism of immune evasion of tumor cells.CD80 is recognized as one of the most potent costimulatory molecules by which immune cells limit malignant growth. It is upregulated upon cell stress and it is critical for efficacious immune surveillance during carcinogenesis. Low surface expression of CD80 was reported as an immune escape mechanism of colon carcinoma; on the other hand, its expression resulted enhanced in high-frequency microsatellite instability (MSI) colorectal cancers, a CRC subtype which is highly immunogenic and associated with a better prognosis. Both in vivo and in vitro studies showed that the upregulation of CD80 on tumor cell surface successfully activates antitumor immune responses, while its expression is frequently lost during tumor progression probably due to selective pressure by the immune system. Thus, to develop effective approaches for cancer immunotherapy, strategies for enhancing CD80 expression in tumors are urgently required.

Reference:
1.\tCarin C. Stamper, Yan Zhang, James F. Tobin, David V. Erbe, Shinji Ikemizu, Simon J. Davis, Mark L. Stahl, Jasbir Seehra, William S. Somers & Lidia Mosyak: Crystal structure of the B7-1/CTLA-4 complex that inhibits human immune responses, Nature volume 410, pages608-611 (2001).

MedChemExpress (MCE) recombinant proteins include: cytokines, enzymes, growth factors, hormones, receptors, transcription factors, antibody fragments, etc. They are often essential for supporting cell growth, stimulating cell signaling pathways, triggering or inhibiting cell differentiation; and are useful tools for elucidating protein structure and function, understanding disease onset and progression, and validating pharmaceutical targets. At MedChemExpress (MCE), we strive to provide products with only the highest quality. Protein identity, purity and biological activity are assured by our robust quality control and assurance procedures.
Related category websites: https://www.medchemexpress.com/recombinant-proteins.html
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Author: Adenosylmethionine- apoptosisinducer