Product Specifications
Analytical sensitivity
Assay range
Sample type/volume
Hands-on time
Time-to-result
Homogenous (no wash)
Interassay CV
Intraassay CV
Instrument
Product size
Contents
Standard
Sample Diluent
Assay Buffer concentrate
Biotinylated Detection Antibody
SAV-HRP
Wash Buffer
Chromogen
Stop Solution
Controls
Adhesive Plate Covers
Shipping conditions
Storage
Protein name
Target sub-specificity
Species (tested)
Assay kit format
Detector antibody conjugate
Label or dye
About This Kit
The Human Cytotoxic T Lymphocyte associated gene -4 (CTLA-4) ELISA quantitates Hu CTLA-4 in human serum, plasma, amniotic fluid, or cell culture medium. The assay will exclusively recognize both natural and recombinant Hu CTLA-4.
Principle of the method
The Human CTLA-4 solid-phase sandwich ELISA (enzyme-linked immunosorbent assay) is designed to measure the amount of the target bound between a matched antibody pair. A target-specific antibody has been pre-coated in the wells of the supplied microplate. Samples, standards, or controls are then added into these wells and bind to the immobilized (capture) antibody. The sandwich is formed by the addition of the second (detector) antibody, a substrate solution is added that reacts with the enzyme-antibody-target complex to produce measurable signal. The intensity of this signal is directly proportional to the concentration of target present in the original specimen.
Rigorous validation
Each manufactured lot of this ELISA kit is quality tested for criteria such as sensitivity, specificity, precision, and lot-to-lot consistency. See manual for more information on validation.
CTLA4 (Cytotoxic T-Lymphocyte Antigen 4) is a CD28-family receptor expressed on mainly CD4+ T cells. It binds the same ligands as CD28 (CD80 and CD86 on B cells and dendritic cells), but with higher affinity than CD28. However, in contrast to CD28 which enhances cell function when bound at the same time as the T cell receptor, CTLA4 inhbits the T cell and prevents it from functioning. Intracellular CTLA4 is also found in regulatory T cells and may be important to their function.
For Research Use Only. Not for use in diagnostic procedures. Not for resale without express authorization.
Bioinformatics
Gene aliases : ALPS5, CD, CD152, CELIAC3, CTLA-4, CTLA4, GRD4, GSE, IDDM12
Gene ID : (Human) 1493
Gene symbol : CTLA4
Protein Aliases : CD152, CD152 isoform, celiac disease 3, CTLA-4, cytotoxic T lymphocyte associated antigen 4 short spliced form, Cytotoxic T-lymphocyte protein 4, Cytotoxic T-lymphocyte-associated antigen 4, cytotoxic T-lymphocyte-associated protein 4, cytotoxic T-lymphocyte-associated serine esterase-4, insulin-dependent diabetes mellitus 12, ligand and transmembrane spliced cytotoxic T lymphocyte associated antigen 4
UniProt ID (Human) P16410
Performance Guarantee
If an Invitrogen™ antibody doesn't perform as described on our website or datasheet,we'll replace the product at no cost to you, or provide you with a credit for a future purchase.*
Learn more
We're here to help
Get expert recommendations for common problems or connect directly with an on staff expert for technical assistance related to applications, equipment and general product use.
Contact tech support