Human CD18 ELISA (ab277459)
Key features and details
- Sensitivity: 0.22 ng/ml
- Range: 0.205 ng/ml - 50 ng/ml
- Sample type: Cell culture supernatant, Plasma, Serum
- Detection method: Colorimetric
- Assay type: Sandwich (quantitative)
- Reacts with: Human
Overview
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Product name
Human CD18 ELISA -
Detection method
Colorimetric -
Precision
Intra-assay Sample n Mean SD CV% Overall Inter-assay Sample n Mean SD CV% Overall -
Sample type
Cell culture supernatant, Serum, Plasma -
Assay type
Sandwich (quantitative) -
Sensitivity
0.22 ng/ml -
Range
0.205 ng/ml - 50 ng/ml -
Recovery
Sample specific recovery Sample type Average % Range Serum 100.9 70% - 102% Plasma 86.64 70% - 100% Cell culture media 119.1 98% - 141% -
Assay duration
Multiple steps standard assay -
Species reactivity
Reacts with: Human -
Product overview
Human CD18 ELISA Kit (ab277459) is an in-vitro enzyme-linked immunosorbent assay for the quantitative measurement of Human CD18 in serum, plasma and cell culture supernatants.
This assay employs an antibody specific for Human CD18 coated on a 96-well plate. Standards and samples are pipetted into the wells and Human CD18 present in a sample is bound to the wells by the immobilized antibody. The wells are washed, and biotinylated anti-Human CD18 antibody is added. After washing away unbound biotinylated antibody, HRP-conjugated streptavidin is pipetted to the wells. The wells are again washed, a TMB substrate solution is added to the wells and color develops in proportion to the amount of Human CD18 bound. The Stop Solution changes the color from blue to yellow, and the intensity of the color is measured at 450 nm.
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Tested applications
Suitable for: Sandwich ELISAmore details -
Platform
Pre-coated microplate (12 x 8 well strips)
Properties
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Storage instructions
Store at -20°C. Please refer to protocols. -
Components 1 x 96 tests 20X Wash Buffer Concentrate 1 x 25ml 500X HRP-Streptavidin Concentrate 1 x 200µl 5X Assay Diluent 1 x 15ml Biotinylated Anti-Human CD18 Antibody 2 vials Anti-Human CD18 coated Microplate 1 unit Human CD18 standard protein (Lyophilized) 2 vials Stop Solution 1 x 8ml TMB One-Step Substrate Reagent 1 x 12ml -
Research areas
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Function
Integrin alpha-L/beta-2 is a receptor for ICAM1, ICAM2, ICAM3 and ICAM4. Integrins alpha-M/beta-2 and alpha-X/beta-2 are receptors for the iC3b fragment of the third complement component and for fibrinogen. Integrin alpha-X/beta-2 recognizes the sequence G-P-R in fibrinogen alpha-chain. Integrin alpha-M/beta-2 recognizes P1 and P2 peptides of fibrinogen gamma chain. Integrin alpha-M/beta-2 is also a receptor for factor X. Integrin alpha-D/beta-2 is a receptor for ICAM3 and VCAM1. -
Involvement in disease
Defects in ITGB2 are the cause of leukocyte adhesion deficiency type 1 (LAD1) [MIM:116920]. LAD1 patients have recurrent bacterial infections and their leukocytes are deficient in a wide range of adhesion-dependent functions. -
Sequence similarities
Belongs to the integrin beta chain family.
Contains 1 VWFA domain. -
Post-translational
modificationsBoth Ser-745 and Ser-756 become phosphorylated when T-cells are exposed to phorbol esters. Phosphorylation on Thr-758 (but not on Ser-756) allows interaction with 14-3-3 proteins. -
Cellular localization
Membrane. - Information by UniProt
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Alternative names
- 95 subunit beta
- Beta 2 (antigen CD18 (p95)
- CD 18
see all -
Database links
- Entrez Gene: 3689 Human
- Omim: 600065 Human
- SwissProt: P05107 Human
- Unigene: 375957 Human
Images
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Example data
These standard curves are for demonstration only. A standard curve must be run with each assay.
