Recombinant Human MS4A1 Protein (Glu213-Pro297), N-His tagged

• Cat.No.: MS4A1-5318H
• Product Overview: Recombinant human MS4A1 (Glu213-Pro297) fused with the N-terminal His tag was expressed in Mammalian cells.

Specification

• Species: Human
• Source: Mammalian Cells
• Tag: His
• Protein Length: Glu213-Pro297
• Description: CD20 is expressed on all stages of B cell development except the first and last; it is present from late pro-B cells through memory cells, but not on either early pro-B cells or plasma blasts and plasma cells. It is found on B-cell lymphomas, hairy cell leukemia, B-cell chronic lymphocytic leukemia, and melanoma cancer stem cells. The protein has no known natural ligand and its function is to enable optimal B-cell immune response, specifically against T-independent antigens. It is suspected that it acts as a calcium channel in the cell membrane. CD20 / MS4A1 is the target of the monoclonal antibodies (mAb) rituximab, Ibritumomab tiuxetan, and tositumomab, which are all active agents in the treatment of all B cell lymphomas and leukemias. Defects in CD20 / MS4A1 are the cause of immunodeficiency common variable type 5 (CVID5); also called antibody deficiency due to CD20 defect. CVID5 is a primary immunodeficiency characterized by antibody deficiency, hypogammaglobulinemia, recurrent bacterial infections and an inability to mount an antibody response to antigen.
• Form: Lyophilized powder/frozen liquid
• Molecular Mass: 9.35 kDa
• Endotoxin: < 1.0 EU/μg of the protein as determined by the LAL method.
• Purity: >90% as determined by SDS-PAGE.
• Notes: For research use only.
• Storage: Use a manual defrost freezer and avoid repeated freeze thaw cycles. Store at 2 to 8 centigrade for one week. Store at -20 to -80 centigrade for twelve months from the date of receipt.
• Storage Buffer: Supplied as solution form in PBS, pH 7.5 or lyophilized from PBS, pH 7.5.
• Reconstitution: Reconstitute in sterile water for a stock solution.
• Shipping: They are shipped out with dry ice/blue ice unless customers require otherwise.

Gene Information

• Gene Name: MS4A1 membrane-spanning 4-domains, subfamily A, member 1 [ Homo sapiens (human) ]
• Official Symbol: MS4A1
• Synonyms: MS4A1; membrane-spanning 4-domains, subfamily A, member 1; CD20; B-lymphocyte antigen CD20; B1; Bp35; MS4A2; CD20 antigen; CD20 receptor; leukocyte surface antigen Leu-16; B-lymphocyte cell-surface antigen B1; S7; CVID5; LEU-16; MGC3969
• Gene ID: 931
• mRNA Refseq: NM_021950
• Protein Refseq: NP_068769
• MIM: 112210
• UniProt ID: P11836