Recombinant Human Membrane cofactor protein (CD46), partial (Active)

Proteins / Recombinant Protein

The shelf life is related to many factors, storage state, buffer ingredients, storage temperature and the stability of the protein itself.
Generally, the shelf life of liquid form is 6 months at -20?/-80?. The shelf life of lyophilized form is 12 months at -20?/-80?.

Lyophilized from a 0.2 ?m filtered PBS, 6% Trehalose, pH 7.4

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.
(Microbial infection) A number of viral and bacterial pathogens seem to bind MCP in order to exploit its immune regulation property and directly induce an immunosuppressive phenotype in T-cells.
(Microbial infection) Acts as a receptor for Adenovirus subgroup B2 and Ad3.
(Microbial infection) Acts as a receptor for cultured Measles virus.
(Microbial infection) Acts as a receptor for Herpesvirus 6/HHV-6.
(Microbial infection) May act as a receptor for pathogenic bacteria Neisseria and Streptococcus pyogenes (PubMed:7708671, PubMed:9379894, PubMed:11260136, PubMed:11971006).

Partial

Repeated freezing and thawing is not recommended. Store working aliquots at 4? for up to one week.

Homo sapiens (Human)

Less than 1.0 EU/ug as determined by LAL method.