CTLA-4 Recombinant Protein | CTLA4 recombinant protein

CTLA-4 Protein, Human, Recombinant (hFc Tag)

Cat. Num. AAA8120706

• Gene Names: CTLA4; CD; GSE; GRD4; CD152; CTLA-4; IDDM12; CELIAC3
• Purity: >95% as determined by SDS-PAGE
• Synonyms: CTLA-4; CTLA-4 Protein; Human; Recombinant (hFc Tag); Human CTLA4/CD152 Protein (Fc Tag); ALPS5 Protein; CD Protein; CD152 Protein; CELIAC3 Protein; GRD4 Protein; GSE Protein; IDDM12 Protein; cytotoxic T-lymphocyte-associated protein 4; CTLA4 recombinant protein

• Host: HEK293 Cells
• Purity/Purification: >95% as determined by SDS-PAGE
• Form/Format: Lyophilized from sterile PBS, pH7.4. Normally 5%-8% trehalose, mannitol and 0.01% Tween80 are added as protectants before lyophilization. Please refer to the specific buffer information in the hard copy of CoA.
• Sequence: Met1-Phe162

• Species: Human
• Endotoxin: <1.0EU per ug protein as determined by the LAL method.
• Predicted N Terminal: Lys 36
• Tag: C-human IgG1-Fc
• Protein Construction: A DNA sequence encoding the human CTLA4 (NP_005205.2)(Met1-Phe162) was expressed with the Fc region of human IgG1 at the C-terminus.
• Reconstitution: A hardcopy of COA with reconstitution instruction is sent along with the products. Please refer to it for detailed information.
• Preparation and Storage: Samples are stable for up to twelve months from date of receipt at -20 degree C to -80 degree C. Store it under sterile conditions at -20 degree C to -80 degree C. It is recommended that the protein be aliquoted for optimal storage. Avoid repeated freeze-thaw cycles.; In general, recombinant proteins are provided as lyophilized powder which are shipped at ambient temperature. Bulk packages of recombinant proteins are provided as frozen liquid.; They are shipped out with blue ice.

SDS-Page

Related Product Information for CTLA4 recombinant protein

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).

Product Categories/Family for CTLA4 recombinant protein

ITIM/ITAM Immunoreceptors and Related Molecules Cancer Drug Targets

References

Slavik JM, et al. (1999) CD28/CTLA-4 and CD80/CD86 families: signaling and function. Immunol Res. 19(1): 1-24.Holmberg D, et al. (2005) CTLA-4 (CD152) and its involvement in autoimmune disease. Autoimmunity. 38(3): 225-33.Chin LT, et al. (2008) Immune intervention with monoclonal antibodies targeting CD152 (CTLA-4) for autoimmune and malignant diseases. Chang Gung Med J. 31(1): 1-15.

NCBI and Uniprot Product Information

• NCBI GI #: 21361212
• NCBI GeneID: 1493
• NCBI Accession #: NP_005205.2
• NCBI GenBank Nucleotide #: NM_005214.4
• UniProt Accession #: P16410; O95653; Q0PP65; Q52MC1; Q53TD5; Q5S005; Q8WXJ1; Q96P43; Q9UKN9; A0N1S0; E9PDH0
• Molecular Weight: 24,656 Da
• NCBI Official Full Name: cytotoxic T-lymphocyte protein 4 isoform CTLA4-TM
• NCBI Official Synonym Full Names: cytotoxic T-lymphocyte-associated protein 4
• NCBI Official Symbol: CTLA4
• NCBI Official Synonym Symbols: CD; GSE; GRD4; CD152; CTLA-4; IDDM12; CELIAC3
• NCBI Protein Information: cytotoxic T-lymphocyte protein 4; CD152 isoform; celiac disease 3; cytotoxic T-lymphocyte antigen 4; insulin-dependent diabetes mellitus 12; cytotoxic T-lymphocyte-associated antigen 4; cytotoxic T-lymphocyte-associated serine esterase-4; cytotoxic T lymp
• UniProt Protein Name: Cytotoxic T-lymphocyte protein 4
• Protein Family: Cytotoxic T-lymphocyte protein
• UniProt Gene Name: CTLA4
• UniProt Synonym Gene Names: CD152; CTLA-4
• UniProt Entry Name: CTLA4_HUMAN

NCBI Description

This gene is a member of the immunoglobulin superfamily and encodes a protein which transmits an inhibitory signal to T cells. The protein contains a V domain, a transmembrane domain, and a cytoplasmic tail. Alternate transcriptional splice variants, encoding different isoforms, have been characterized. The membrane-bound isoform functions as a homodimer interconnected by a disulfide bond, while the soluble isoform functions as a monomer. Mutations in this gene have been associated with insulin-dependent diabetes mellitus, Graves disease, Hashimoto thyroiditis, celiac disease, systemic lupus erythematosus, thyroid-associated orbitopathy, and other autoimmune diseases. [provided by RefSeq, Jul 2008]

Uniprot Description

CTLA-4: Inhibitory receptor acting as a major negative regulator of T-cell responses. The affinity of CTLA4 for its natural B7 family ligands, CD80 and CD86, is considerably stronger than the affinity of their cognate stimulatory coreceptor CD28. Genetic variation in CTLA4 influences susceptibility to systemic lupus erythematosus (SLE). SLE is a chronic, inflammatory and often febrile multisystemic disorder of connective tissue. It affects principally the skin, joints, kidneys and serosal membranes. SLE is thought to represent a failure of the regulatory mechanisms of the autoimmune system. Genetic variations in CTLA4 may influence susceptibility to Graves disease, an autoimmune disorder associated with overactivity of the thyroid gland and hyperthyroidism. Genetic variation in CTLA4 is the cause of susceptibility to diabetes mellitus insulin-dependent type 12 (IDDM12). A multifactorial disorder of glucose homeostasis that is characterized by susceptibility to ketoacidosis in the absence of insulin therapy. Clinical fetaures are polydipsia, polyphagia and polyuria which result from hyperglycemia-induced osmotic diuresis and secondary thirst. These derangements result in long-term complications that affect the eyes, kidneys, nerves, and blood vessels. Genetic variation in CTLA4 is the cause of susceptibility to celiac disease type 3 (CELIAC3). It is a multifactorial disorder of the small intestine that is influenced by both environmental and genetic factors. It is characterized by malabsorption resulting from inflammatory injury to the mucosa of the small intestine after the ingestion of wheat gluten or related rye and barley proteins. In its classic form, celiac disease is characterized in children by malabsorption and failure to thrive. 4 isoforms of the human protein are produced by alternative splicing.

Protein type: Membrane protein, integral; Immunoglobulin superfamily

Chromosomal Location of Human Ortholog: 2q33

Cellular Component: Golgi apparatus; perinuclear region of cytoplasm; integral to plasma membrane; plasma membrane; clathrin-coated endocytic vesicle; external side of plasma membrane

Molecular Function: protein binding

Biological Process: B cell receptor signaling pathway; negative regulation of T cell proliferation; positive regulation of apoptosis; negative regulation of regulatory T cell differentiation; negative regulation of immune response; T cell costimulation; immune response; negative regulation of B cell proliferation; response to DNA damage stimulus

Disease: Autoimmune Lymphoproliferative Syndrome, Type V; Celiac Disease, Susceptibility To, 3; Diabetes Mellitus, Insulin-dependent, 12; Systemic Lupus Erythematosus; Hashimoto Thyroiditis