Anti-CTLA4 Antibody -FITC Conjugate

Boster Bio Anti-CTLA4 Antibody Picoband® catalog # A00020-2. Tested in ELISA, IHC applications. This antibody reacts with Human.

Product Specifications

Background

CTLA-4 (Cytotoxic T-Lymphocyte Antigen 4), also known as CD152, is a protein receptor that down regulates the immune system. It is a member of the immunoglobulin superfamily, which is expressed on the surface of Helper T cells and transmits an inhibitory signal to T cells. CTLA4 is similar to the T-cell co-stimulatory protein, CD28, and both molecules bind to CD80 and CD86, also called B7-1 and B7-2 respectively, on antigen-presenting cells. CTLA4 transmits an inhibitory signal to T cells, whereas CD28 transmits a stimulatory signal. Blockade of CTLA4 expression in vitro augmented HIV-specific CD4-positive T-cell function.

Synonyms

Cytotoxic T-lymphocyte protein 4;Cytotoxic T-lymphocyte-associated antigen 4;CTLA-4;CD152;Ctla4;Cd152;

Gene Name

Cytotoxic T-lymphocyte protein 4

Gene ID

1493

UniProt

P16410

Host

Rabbit

Reactivity

Human

Cross Reactivity

No cross-reactivity with other proteins.

Immunogen

E.coli-derived human CTLA4 recombinant protein (Position: N110-N223).

Clonality

Polyclonal

Tissue Specificity

Widely expressed with highest levels in lymphoid tissues. .

Applications

IHC,ELISA

Purification

Immunogen affinity purified.

Concentration

Adding 0.2 ml of distilled water will yield a concentration of 500 μg/ml.

Form

Lyophilized

Reconstitution

Add 0.2ml of distilled water will yield a concentration of 500ug/ml.

Function

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 (By similarity). .

Components

Each vial contains 4mg Trehalose, 0.9mg NaCl, 0.2mg Na2HPO4.

References & Citations

1. Dariavach P, Mattéi MG, Golstein P, Lefranc MP (December 1988). "Human Ig superfamily CTLA-4 gene: chromosomal localization and identity of protein sequence between murine and human CTLA-4 cytoplasmic domains". Eur. J. Immunol. 18 (12): 1901–5. 2. Magistrelli G, Jeannin P, Herbault N, Benoit De Coignac A, Gauchat JF, Bonnefoy JY, Delneste Y (November 1999). "A soluble form of CTLA-4 generated by alternative splicing is expressed by nonstimulated human T cells".Eur. J. Immunol. 29 (11): 3596–602. 3. Waterhouse P, Penninger JM, Timms E, Wakeham A, Shahinian A, Lee KP, Thompson CB, Griesser H, Mak TW (November 1995). "Lymphoproliferative disorders with early lethality in mice deficient in Ctla-4". Science 270(5238): 985–8.

Storage Conditions

Store at -20℃ for one year from date of receipt. After reconstitution, at 4℃ for one month. It can also be aliquotted and stored frozen at -20℃ for six months. Avoid repeated freeze-thaw cycles.