CD46, Monoclonal Antibody

For Research Use Only. Not for use in diagnostic procedures.

Monoclonal

IgG1

MEM-258

Mouse

FITC
Purified IgG conjugated to Fluorescein Isothiocyanate Isomer 1 (FITC) - liquid

IgG concentration 0.1 mg/ml (lot specific)

Store at 4 degree C or at -20 degree C if preferred. This product should be stored undiluted. Storage in frost-free freezers is not recommended. This product is photosensitive and should be protected from light. Avoid repeated freezing and thawing as this may denature the antibody. Should this product contain a precipitate we recommend microcentrifugation before use.
Shelf Life: 18 months from date of despatch.

Small volumes of anti-CD46 antibody vial(s) may occasionally become entrapped in the seal of the product vial during shipment and storage. If necessary, briefly centrifuge the vial on a tabletop centrifuge to dislodge any liquid in the container`s cap. Certain products may require to ship with dry ice and additional dry ice fee may apply.

Mouse anti Human CD46 antibody, clone MEM-258 recognizes the human CD46 cell surface antigen, a broadly expressed glycoprotein also known as membrane co-factor protein (MCP). CD46 functions as an inhibitor of complement activation limiting the formation and activity of C3 convertases. CD46 is expressed by all nucleated cells, often as multiple isoforms on the same cells. The molecule is also expressed by sperm and may be important in the process of fertilisation.

Flow cytometry (FC/FACS)

Flow Cytometry: Use 10ul of the suggested working dilution to label 106 or 100ul whole blood.
Flow Cytometry: Maximum Dilution: Neat

Staining of human peripheral blood lymphocytes with Mouse anti Human CD46:RPE (MBS213724)

Staining of human peripheral blood lymphocytes with Mouse anti Human CD46 (MBS212502)

Staining of human peripheral blood granulocytes with Mouse anti Human CD46: Alexa Fluor 647 (MBS212502A647)

Staining of human peripheral blood lymphocytes with Mouse anti Human CD46:FITC

36,826 Da

CD46 molecule, complement regulatory protein

membrane cofactor protein; CD46 antigen, complement regulatory protein; antigen identified by monoclonal antibody TRA-2-10; complement membrane cofactor protein; measles virus receptor; membrane cofactor protein (CD46, trophoblast-lymphocyte cross-reactive antigen); trophoblast leucocyte common antigen; trophoblast leukocyte common antigen

Membrane cofactor protein

MCP; MIC10  [Similar Products]

MCP_HUMAN

The protein encoded by this gene is a type I membrane protein and is a regulatory part of the complement system. The encoded protein has cofactor activity for inactivation of complement components C3b and C4b by serum factor I, which protects the host cell from damage by complement. In addition, the encoded protein can act as a receptor for the Edmonston strain of measles virus, human herpesvirus-6, and type IV pili of pathogenic Neisseria. Finally, the protein encoded by this gene may be involved in the fusion of the spermatozoa with the oocyte during fertilization. Mutations at this locus have been associated with susceptibility to hemolytic uremic syndrome. Alternatively spliced transcript variants encoding different isoforms have been described. [provided by RefSeq, Jun 2010]

CD46: Acts as a cofactor for complement factor I, a serine protease which protects autologous cells against complement- mediated injury by cleaving C3b and C4b deposited on host tissue. May be involved in the fusion of the spermatozoa with the oocyte during fertilization. Also acts as a costimulatory factor for T- cells which induces the differentiation of CD4+ into T-regulatory 1 cells. T-regulatory 1 cells suppress immune responses by secreting interleukin-10, and therefore are thought to prevent autoimmunity. A number of viral and bacterial pathogens seem to exploit this property and directly induce an immunosuppressive phenotype in T-cells by binding to CD46. Defects in CD46 are a cause of susceptibility to hemolytic uremic syndrome atypical type 2 (AHUS2). An atypical form of hemolytic uremic syndrome. It is a complex genetic disease characterized by microangiopathic hemolytic anemia, thrombocytopenia, renal failure and absence of episodes of enterocolitis and diarrhea. In contrast to typical hemolytic uremic syndrome, atypical forms have a poorer prognosis, with higher death rates and frequent progression to end-stage renal disease. Susceptibility to the development of atypical hemolytic uremic syndrome can be conferred by mutations in various components of or regulatory factors in the complement cascade system. Other genes may play a role in modifying the phenotype. Patients with CD46 mutations seem to have an overall better prognosis compared to patients carrying CFH mutations. 16 isoforms of the human protein are produced by alternative splicing.

Protein type: Membrane protein, integral; Receptor, misc.; Cell surface

Chromosomal Location of Human Ortholog: 1q32

Cellular Component: Golgi apparatus; inner acrosomal membrane; focal adhesion; cell surface; basolateral plasma membrane; integral to plasma membrane; plasma membrane

Molecular Function: complement binding; enzyme inhibitor activity; protein binding; cadherin binding; endopeptidase activity; receptor activity

Biological Process: positive regulation of memory T cell differentiation; adaptive immune response; positive regulation of regulatory T cell differentiation; viral reproduction; T cell mediated immunity; proteolysis; positive regulation of interleukin-10 production; regulation of Notch signaling pathway; negative regulation of complement activation; single fertilization; negative regulation of catalytic activity; interleukin-10 production; regulation of complement activation; innate immune response; positive regulation of T cell proliferation; complement activation, classical pathway

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