CD28 recombinant protein

Recombinant Human CD28 Protein (Fc tag) (Fc tag)

Cat. Num. AAA2545763

• Gene Names: CD28; Tp44
• Purity: > 90 % as determined by SDS-PAGE
• Synonyms: CD28; Recombinant Human CD28 Protein (Fc tag) (Fc tag); MGC138290; Tp44; CD28 recombinant protein

• Host: Human Cells
• Purity/Purification: > 90 % as determined by SDS-PAGE
• Form/Format: Lyophilized from sterile PBS, pH 7.4
• Sequence Length: 123

• Application Notes: The recombinant human CD28/Fc is a disulfide-linked homodimeric protein. The reduced monomer consists of 375 amino acids and predictes a molecular mass of 42 kDa. In SDS-PAGE under reducing conditions, the apparent molecular mass of rhCD28/Fc monomer is approximately 55-65 kDa due to glycosylation.
• Predicted N Terminal: Asn 19
• Endotoxin: < 1.0 EU per mug of the protein as determined by the LAL method
• Preparation and Storage: Samples are stable for up to twelve months from date of receipt at -70 degree C

SDS-PAGE

Related Product Information for CD28 recombinant protein

Background: CD28  (Cluster of Differentiation 28) is a disulphide-bonded glycoprotein belonging to the immunoglobulin (Ig) superfamily, and structurally consists of a single Ig V-like extracellular domain, a transmembrane domain and an intracellular domain. Mouse CD28 is constitutively expressed on the surface of all murine T cells and on developing thymocytes as disulfide-linked homodimers or as monomers. CD28 can binds the B7-1 and B7-2 ligand, and together perform important functions in the T and B cell response pathways. B7/CD28 family members, which can augment or antagonize T-cell receptor signaling, in the regulation of central and peripheral T-cell tolerance. CD28 is thus involved in T-cell activation, the induction of cell proliferation and cytokine production and promotion of T-cell survival.

Description: A DNA sequence encoding the human CD28 isoform 1 (P10747-1) extracellular domain (Met 1-Pro 152) was was fused with the Fc region of human IgG1 at the C-terminus.

NCBI and Uniprot Product Information

• NCBI GI #: 340545508
• NCBI GeneID: 940
• NCBI Accession #: NP_001230006.1
• NCBI GenBank Nucleotide #: NM_001243077.1
• UniProt Accession #: P10747; Q13964; Q52M23; Q70WG0; Q8NI54; Q8NI55; Q8NI56; Q8WXJ2; Q9BYV0; A8KAC1
• Molecular Weight: 26,186 Da
• NCBI Official Full Name: T-cell-specific surface glycoprotein CD28 isoform 2
• NCBI Official Synonym Full Names: CD28 molecule
• NCBI Official Symbol: CD28
• NCBI Official Synonym Symbols: Tp44
• NCBI Protein Information: T-cell-specific surface glycoprotein CD28
• UniProt Protein Name: T-cell-specific surface glycoprotein CD28
• Protein Family: T-cell-specific surface glycoprotein
• UniProt Gene Name: CD28

NCBI Description

The protein encoded by this gene is essential for T-cell proliferation and survival, cytokine production, and T-helper type-2 development. Several alternatively spliced transcript variants encoding different isoforms have been found for this gene.[provided by RefSeq, Jul 2011]

Uniprot Description

CD28: a type I plasma membrane protein Involved in T-cell activation, the induction of cell proliferation and cytokine production and promotion of T-cell survival. Binds to B7-1 and -2. Expressed in T cells and plasma cells, but not in less mature B cells. Six splice-variant isoforms have been described.

Protein type: Cell surface; Membrane protein, integral

Chromosomal Location of Human Ortholog: 2q33.2

Cellular Component: cell surface; cytosol; external side of plasma membrane; integral to plasma membrane; plasma membrane

Molecular Function: coreceptor activity; phosphatidylinositol-4,5-bisphosphate 3-kinase activity; protease binding; protein binding; SH3/SH2 adaptor activity

Biological Process: cell surface receptor linked signal transduction; cytokine biosynthetic process; humoral immune response; phosphoinositide-mediated signaling; positive regulation of interleukin-10 production; positive regulation of interleukin-2 biosynthetic process; positive regulation of interleukin-4 production; positive regulation of mitosis; positive regulation of T cell proliferation; regulation of defense response to virus by virus; regulation of phosphoinositide 3-kinase cascade; regulatory T cell differentiation; T cell costimulation