Biotinylated Human CD52 Protein (C-Fc-Avi)

Name: Biotinylated Human CD52 Protein (C-Fc-Avi)
Brand: Beta LifeScience
SKU: BL-2194NP
Availability: InStock

BL-2194NP: Greater than 95% as determined by reducing SDS-PAGE. (QC verified)

Collections: Antibody / cell therapy targets, Antibody therapeutic / adc target proteins, Avi-tagged proteins, Biotinylated proteins, Car-nk targets proteins, Cluster of differentiation (cd) proteins, Featured biotinylated protein molecules, Featured cd protein molecules, High-quality recombinant proteins

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Product Overview

Description	Biotinylated Recombinant Human CAMPATH-1 Antigen is produced by our Mammalian expression system and the target gene encoding Gly25-Ser36 is expressed with a human IgG1 Fc, Avi tag at the C-terminus.
Accession	P31358
Synonym	CAMPATH-1 antigen; CAMPATH-1; CD52 antigen; CD52 molecule; CD52; CDw52; Epididymal secretory protein E5; He5; HEL-S-171mP; Human epididymis-specific protein 5
Gene Background	CD52, also known as CAMPATH-1 antigen, HE5, and gp20, is a cell surface glycoprotein that can be targeted to induce immune suppression by complement-mediated cell lysis. CD52 is expressed on lymphocytes, monocytes, monocycte-derived dendritic cells, eosinophils, and neutrophils, as well as on mature spermatozoa and epithelial cells lining the male genital tract. From the clinical point of view this protein is an important target for therapeutic interventions aimed at leukocyte depletion in hematological malignancies and post-transplant immunosuppression. CD52 / CDW52 may play a role in carrying and orienting carbohydrate. It is an unusually good target for complement-mediated cell lysis.
Molecular Mass	30.2 KDa
Apmol Mass	38-50 KDa, reducing conditions
Formulation	Lyophilized from a 0.2 μm filtered solution of PBS, pH 7.4.
Endotoxin	Less than 0.1 ng/µg (1 EU/µg) as determined by LAL test.
Purity	Greater than 95% as determined by reducing SDS-PAGE. (QC verified)
Biological Activity	Not tested
Reconstitution	Always centrifuge tubes before opening. Do not mix by vortex or pipetting. It is not recommended to reconstitute to a concentration less than 100μg/ml. Dissolve the lyophilized protein in distilled water. Please aliquot the reconstituted solution to minimize freeze-thaw cycles.
Storage	Lyophilized protein should be stored at ≤ -20°C, stable for one year after receipt. Reconstituted protein solution can be stored at 2-8°C for 2-7 days. Aliquots of reconstituted samples are stable at ≤ -20°C for 3 months.
Shipping	The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature listed below.
Usage	For Research Use Only

Target Details

Target Function	May play a role in carrying and orienting carbohydrate, as well as having a more specific role.
Subcellular Location	Cell membrane; Lipid-anchor, GPI-anchor.
Database References	HGNC: 1804 OMIM: 114280 KEGG: hsa:1043 STRING: 9606.ENSP00000363330 UniGene: PMID: 29997173 CD52 is a novel prognostic NSC marker and a potential NSC target in a subset of patients with MDS and AML, which may have clinical implications and may explain clinical effects produced by alemtuzumab in these patients. PMID: 24799522 carbohydrate moiety of sperm protein interferes with the complement system via binding to C1q PMID: 22386526 CT60 single-nucleotide polymorphism of CTLA4 is a surrogate marker for donor lymphocyte infusion outcome after allogeneic cell transplantation for acute leukemia PMID: 21552305 Clonal large granular lymphocytes exhibited decreased CD52 expression post-therapy in patients refractory to treatment. PMID: 19794084 Our bioinformatics findings suggest that CD52 polymorphism may affect the efficiency of GPI anchor formation and thus may indirectly alter the response to anti-CD52 agents like alemtuzumabin renal transplantation. PMID: 20349607 Review article on CD52 structure and function. PMID: 11860230 HE5(CD52) mRNA and protein, expressed in epithelial cells of the distal epididymis, were not affected by the obstruction of the vas deferens. PMID: 14662784 The relationship between this differential insertion and differences in glycosylation of rat and human CD52 is discussed. PMID: 16266689 CD52 is widely expressed on human mast cells (MCs) and Waldenstrom's Macroglobulinemia bone marrow lymphoplasmacytic cells and provide the preclinical rationale for the use of alemtuzumab in the treatment of WM and possibly other MC-related disorders. PMID: 16796779 In this study, we identified the antigen of 4C8 mAb as CD52. CD52 is a costimulatory molecule for induction of CD4-positive T cells. PMID: 16797237 In contrast with CLL, the variable expression of CD52 among other hematologic malignancies suggests that target validation on a case-by-case basis will likely be necessary to guide the rational analysis of CAMPATH therapy. PMID: 17145843 Our data demonstrate differences in the intensity of the CD52 antigen expression between B-lymphocytes and tumor lymphocytes of B-CLL patients, and between B-CLL and SLL tumor cells. CD52 antigen is expressed at low level on CD34(+) cells. PMID: 17428002 The semenogelin-CD52 soluble form is a direct consequence of the liquefaction process in human semen. PMID: 17624925 We first showed the expression of CD52 in human cumulus cells. CD52 has some functional roles around fertilization in females as well as in males. PMID: 18647288 A review on CD52 expression and function PMID: 11257744

FAQs

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Proteins are sensitive to heat, and freeze-drying can preserve the activity of the majority of proteins. It improves protein stability, extends storage time, and reduces shipping costs. However, freeze-drying can also lead to the loss of the active portion of the protein and cause aggregation and denaturation issues. Nonetheless, these adverse effects can be minimized by incorporating protective agents such as stabilizers, additives, and excipients, and by carefully controlling various lyophilization conditions.

Commonly used protectant include saccharides, polyols, polymers, surfactants, some proteins and amino acids etc. We usually add 8% (mass ratio by volume) of trehalose and mannitol as lyoprotectant. Trehalose can significantly prevent the alter of the protein secondary structure, the extension and aggregation of proteins during freeze-drying process; mannitol is also a universal applied protectant and fillers, which can reduce the aggregation of certain proteins after lyophilization.

Our protein products do not contain carrier protein or other additives (such as bovine serum albumin (BSA), human serum albumin (HSA) and sucrose, etc., and when lyophilized with the solution with the lowest salt content, they often cannot form A white grid structure, but a small amount of protein is deposited in the tube during the freeze-drying process, forming a thin or invisible transparent protein layer.

Reminder: Before opening the tube cap, we recommend that you quickly centrifuge for 20-30 seconds in a small centrifuge, so that the protein attached to the tube cap or the tube wall can be aggregated at the bottom of the tube. Our quality control procedures ensure that each tube contains the correct amount of protein, and although sometimes you can't see the protein powder, the amount of protein in the tube is still very precise.

To learn more about how to properly dissolve the lyophilized recombinant protein, please visit Lyophilization FAQs.