Active Recombinant Human CD28 Homodimer Protein, His tagged

• Cat.No.: CD28-22H
• Product Overview: CD28 dimer protein contains a CD28 extracellular domain (Uniprot# P10747) fused with a proprietary dimer motif followed by a His tag at the C-terminus was expressed in HEK293T.

Specification

• Species: Human
• Source: HEK293T
• Tag: His
• Protein Length: 19-152 aa
• Description: Human CD28 (Cluster of Differentiation 28) is a type I membrane protein is in the immunoglobulin superfamily and is a member of the B7 Family of ligands. CD28 is also known as Tp44, TP-44, T-cell-specific surface glycoprotein CD28, and CD28 Antigen. CD28 is the only B7 receptor consistently expressed on naive T cells. CD28 contains a single immunoglobulin variable-region-like (IgV-like) domain, a transmembrane domain, and a cytoplasmic domain. It exists as a homodimer on the cell surface forming a stable structure composed of two identical CD28 protein subunits. The intracellular domain contains two proline-rich motifs and a YMNM motif that are critical for effective signaling. As an immune checkpoint CD28 binds both CD80 (Cluster of differentiation 80) and CD86 (Cluster of differentiation 86) to transmit a stimulatory signal with T cells, competing with CTLA-4 (Cytotoxic T-lymphocyte associated protein 4) which transmits an inhibitory signal. CD28, as a key co-stimulatory receptor in T cell activation, is associated with several diseases, particularly those related to immune system dysfunction, including autoimmune diseases, cancers, and allergic and inflammatory disorders. CD28 is associated with autoimmune diseases including type 1 diabetes, lupus nephritis, asthma, and Crohn's disease. The importance of CD28 signals in T-cell function makes this molecule an exciting target for drug discoveries to modulate the function of both effector T cells and Treg cells.
• Molecular Mass: 46 kDa
• Purity: Greater than 90% dimer form as determined by SDS-PAGE under non-reducing condition
• Application: Verified Applications: ELISA for CD28-specific antibody and CD80 ligand protein binding assays. BLI protein binding assays for CD28 with CD80. Suggested Applications: ELISA for CD28-specific antibody and CD80 ligand protein binding assays. SPR & BLI for CD28-specific antibody and CD80 protein binding assays. Animal immunization, RUO.
• Storage: Store at -80 centigrade.
• Storage Buffer: 0.22μm filtered PBS, pH 7.4
• Shipping: Frozen Dry Ice

Gene Information

• Gene Name: CD28 CD28 molecule [ Homo sapiens (human) ]
• Official Symbol: CD28
• Synonyms: CD28; CD28 molecule; CD28 antigen (Tp44); T-cell-specific surface glycoprotein CD28; T cell specific surface glycoprotein; CD28 antigen; Tp44; MGC138290
• Gene ID: 940
• mRNA Refseq: NM_001243077
• Protein Refseq: NP_001230006
• MIM: 186760
• UniProt ID: P10747