Human Interleukin 12B (IL12B) ELISA Kit | IL12B elisa kit
Human Interleukin 12B (IL12B) ELISA Kit
To minimize extra influence on the performance, operation procedures and lab conditions, especially room temperature, air humidity, incubator temperature should be strictly controlled. It is also strongly suggested that the whole assay is performed by the same operator from the beginning to the end.
Typical Testing Data/Standard Curve (for reference only)
Principle of the Assay: The microplate provided in this kit has been pre-coated with an antibody specific to IL12B. Standards or samples are then added to the appropriate microplate wells with a biotin-conjugated antibody specific to IL12B. Next, Avidin conjugated to Horseradish Peroxidase (HRP) is added to each microplate well and incubated. After TMB substrate solution is added, only those wells that contain IL12B, biotin-conjugated antibody and enzyme-conjugated Avidin will exhibit a change in color. The enzyme-substrate reaction is terminated by the addition of sulphuric acid solution and the color change is measured spectrophotometrically at a wavelength of 450nm +/- 10nm. The concentration of IL12B in the samples is then determined by comparing the O.D. of the samples to the standard curve.
NCBI and Uniprot Product Information
NCBI Description
This gene encodes a subunit of interleukin 12, a cytokine that acts on T and natural killer cells, and has a broad array of biological activities. Interleukin 12 is a disulfide-linked heterodimer composed of the 40 kD cytokine receptor like subunit encoded by this gene, and a 35 kD subunit encoded by IL12A. This cytokine is expressed by activated macrophages that serve as an essential inducer of Th1 cells development. This cytokine has been found to be important for sustaining a sufficient number of memory/effector Th1 cells to mediate long-term protection to an intracellular pathogen. Overexpression of this gene was observed in the central nervous system of patients with multiple sclerosis (MS), suggesting a role of this cytokine in the pathogenesis of the disease. The promoter polymorphism of this gene has been reported to be associated with the severity of atopic and non-atopic asthma in children. [provided by RefSeq, Jul 2008]
Uniprot Description
IL12B: Cytokine that can act as a growth factor for activated T and NK cells, enhance the lytic activity of NK/lymphokine- activated killer cells, and stimulate the production of IFN-gamma by resting PBMC. Defects in IL12B are a cause of mendelian susceptibility to mycobacterial disease (MSMD); also known as familial disseminated atypical mycobacterial infection. This rare condition confers predisposition to illness caused by moderately virulent mycobacterial species, such as Bacillus Calmette-Guerin (BCG) vaccine and environmental non-tuberculous mycobacteria, and by the more virulent Mycobacterium tuberculosis. Other microorganisms rarely cause severe clinical disease in individuals with susceptibility to mycobacterial infections, with the exception of Salmonella which infects less than 50% of these individuals. The pathogenic mechanism underlying MSMD is the impairment of interferon-gamma mediated immunity, whose severity determines the clinical outcome. Some patients die of overwhelming mycobacterial disease with lepromatous-like lesions in early childhood, whereas others develop, later in life, disseminated but curable infections with tuberculoid granulomas. MSMD is a genetically heterogeneous disease with autosomal recessive, autosomal dominant or X-linked inheritance. Genetic variations in IL12B are a cause of susceptibility to psoriasis type 11 (PSORS11). Psoriasis is a common, chronic inflammatory disease of the skin with multifactorial etiology. It is characterized by red, scaly plaques usually found on the scalp, elbows and knees. These lesions are caused by abnormal keratinocyte proliferation and infiltration of inflammatory cells into the dermis and epidermis. Belongs to the type I cytokine receptor family. Type 3 subfamily.
Protein type: Cytokine; Secreted, signal peptide; Secreted
Chromosomal Location of Human Ortholog: 5q31.1-q33.1
Cellular Component: extracellular space; membrane; interleukin-12 complex; cytoplasm
Molecular Function: identical protein binding; hematopoietin/interferon-class (D200-domain) cytokine receptor activity; protein binding; interleukin-12 alpha subunit binding; protein homodimerization activity; growth factor activity; protein heterodimerization activity; cytokine activity; interleukin-23 receptor binding; interleukin-12 receptor binding
Biological Process: positive regulation of granulocyte macrophage colony-stimulating factor production; positive regulation of cell adhesion; negative regulation of interleukin-10 production; positive regulation of T-helper 1 type immune response; positive regulation of T cell mediated cytotoxicity; negative regulation of smooth muscle cell proliferation; positive regulation of interleukin-12 production; positive regulation of osteoclast differentiation; positive regulation of NK T cell proliferation; positive regulation of tyrosine phosphorylation of Stat4 protein; natural killer cell activation; positive regulation of NF-kappaB import into nucleus; positive regulation of activated T cell proliferation; sensory perception of pain; defense response to Gram-negative bacterium; positive regulation of natural killer cell activation; positive regulation of interleukin-10 production; positive regulation of tyrosine phosphorylation of Stat3 protein; positive regulation of lymphocyte proliferation; natural killer cell activation during immune response; positive regulation of T cell proliferation; negative regulation of inflammatory response to antigenic stimulus; cell cycle arrest; defense response to virus; regulation of cytokine biosynthetic process; positive regulation of memory T cell differentiation; positive regulation of interleukin-17 production; positive regulation of natural killer cell proliferation; cell migration; T-helper 1 type immune response; positive regulation of NK T cell activation; positive regulation of natural killer cell mediated cytotoxicity directed against tumor cell target; T-helper cell differentiation; cytokine and chemokine mediated signaling pathway; positive regulation of tumor necrosis factor production; defense response to protozoan; regulation of tyrosine phosphorylation of Stat1 protein; response to UV-B; positive regulation of interferon-gamma production; positive regulation of tissue remodeling; negative regulation of interleukin-17 production; positive regulation of tyrosine phosphorylation of Stat5 protein; positive regulation of mononuclear cell proliferation; sexual reproduction; interferon-gamma biosynthetic process; positive regulation of defense response to virus by host; positive regulation of interferon-gamma biosynthetic process; positive regulation of inflammatory response
Disease: Immunodeficiency 29
