Recombinant Mouse CTLA4/CD152 Protein (His Tag)

Specifications

Catalog number

PKSM040643

Size / count

100 µg

Dry ice

No

Hazardous

No

Discontinued

No

Background

Cytotoxic T-lymphocyte protein 4, also known as CTLA4 and CD152, is a single-pass type I membrane protein and a member of the immunoglobulin superfamily. It is the second member of the CD28 receptor family. The ligands or counterreceptors for these two proteins are the B7 family members, CD80 (B7-1) and CD86 (B7-2) . CTLA4 transmits an inhibitory signal to T cells, whereas CD28 transmits a stimulatory signal. Intracellular CTLA4 is also found in regulatory T cells and may play an important role in their functions. CD152 or cytotoxic T lymphocyte antigen-4 (CTLA-4) is an essential receptor involved in the negative regulation of T cell activation. Because of its profound inhibitory role, CD152 has been considered a sound susceptible candidate in autoimmunity and a persuasive target for cancer immunotherapy. In particular, recent evidence suggests that CD152 is also important in the homeostasis and function of a population of suppressive cells, termed regulatory T cells (Treg) .

Synonyms

Cd152; Ctla-4; Ly-56

UniProt

P09793

Accession Number

NP_033973.2

Expression System

HEK293 Cells

Tag

C-His

Sequence

Met 1-Phe 162

Applications

ELISA

Endotoxin

< 1.0 EU per μg of the protein as determined by the LAL method.

Purity

> 98 % as determined by reducing SDS-PAGE.

Bioactivity

1. Immobilized recombinant mouse CTLA4-His at 10 μg/ml (100 μl/well) can mouse CD80-Fc with a linear range of 0.78-62. 5 ng/ml. 2. Immobilized recombinant mouse CTLA4-His at 10 μg/ml (100 μl/well) can human B7-1-Fc with a linear range of 0.78-125 ng/ml.

Reconstitution

Please refer to the printed manual for detailed information.

Shipping Conditions

This product is provided as lyophilized powder which is shipped with ice packs.

Storage Conditions

Generally, lyophilized proteins are stable for up to 12 months when stored at -20 to -80°C. Reconstituted protein solution can be stored at 4-8°C for 2-7 days. Aliquots of reconstituted samples are stable at < -20°C for 3 months.

Calculated Molecular Weight

15.3 kDa

Observed Molecular Weight

25-30 kDa

Species

Mouse