ICOS / CD278 (C137S, C138S) Recombinant Protein

Product Specifications

Background

Inducible T-cell costimulator (ICOS) is also known as Activation-inducible lymphocyte immunomediatory molecule (AILIM), CD278, which belongs to the CD28 family of immune costimulatory receptors consisting of CD28, CTLA-4 and PD-1. ICOS enhances all basic T-cell responses to a foreign antigen, namely proliferation, secretion of lymphokines, up-regulation of molecules that mediate cell-cell interaction, and effective help for antibody secretion by B-cells. CD278 / ICOS prevents the apoptosis of pre-activated T-cells and also plays a critical role in CD40-mediated class switching of immunoglobin isotypes.

CAS Number

9000-83-3

NCBI Gene ID

54167

Swiss Prot

Q9WVS0

Accession Number

NP_059508.2 (C137S, C138S)

Tag

Fc Tag

Type

Recombinant Proteins

Source

HEK293 cells

Purity

>95% as determined by SDS-PAGE.

Buffer

Tris with Glycine, Arginine and NaCl, pH7.5

Shipping Conditions

Room Temp

Storage Conditions

Lyophilized Protein should be stored at -20˚ C or lower for long term storage. Upon reconstitution, working aliquots should be stored at -20˚ C or -70˚ C. Avoid repeated freeze-thaw cycles.

Calculated Molecular Weight

40.6 kDa

Applications Notes

This protein carries a human IgG1 Fc tag at the C-terminus. The protein has a calculated MW of 40.6 kDa. The protein migrates as 45-55 kDa under reducing (R) condition (SDS-PAGE) due to glycosylation.