S100A9 Antibody, Biotin conjugated

Description

Aliases

Calgranulin-B Calprotectin L1H subunit Leukocyte L1 complex heavy chain Migration inhibitory factor-related protein 14 S100 calcium-binding protein A9 S100A9 CAGB, CFAG, MRP14

Antibody Type

Polyclonal Antibody

Species

Human

Uniprot ID

P06702

Immunogen

Recombinant human Protein S100-A9 protein (2-114AA)

Raised In

Rabbit

Species Reactivity

Human

Tested Applications

ELISA;Not yet tested in other applications.

Background / Function

S100A9 is a calcium- and zinc-binding protein which plays a prominent role in the regulation of inflammatory processes and immune response. It can induce neutrophil chemotaxis, adhesion, can increase the bactericidal activity of neutrophils by promoting phagocytosis via activation of SYK, PI3K/AKT, and ERK1/2 and can induce degranulation of neutrophils by a MAPK-dependent mechanism. Predominantly found as calprotectin (S100A8/A9) which has a wide plethora of intra- and extracellular functions. The intracellular functions include: facilitating leukocyte arachidonic acid trafficking and metabolism, modulation of the tubulin-dependent cytoskeleton during migration of phagocytes and activation of the neutrophilic NADPH-oxidase. Activates NADPH-oxidase by facilitating the enzyme complex assembly at the cell membrane, transfering arachidonic acid, an essential cofactor, to the enzyme complex and S100A8 contributes to the enzyme assembly by directly binding to NCF2/P67PHOX. The extracellular functions involve proinfammatory, antimicrobial, oxidant-scavenging and apoptosis-inducing activities. Its proinflammatory activity includes recruitment of leukocytes, promotion of cytokine and chemokine production, and regulation of leukocyte adhesion and migration. Acts as an alarmin or a danger associated molecular pattern (DAMP) molecule and stimulates innate immune cells via binding to pattern recognition receptors such as Toll-like receptor 4 (TLR4) and receptor for advanced glycation endproducts (AGER). Binding to TLR4 and AGER activates the MAP-kinase and NF-kappa-B signaling pathways resulting in the amplification of the proinflammatory cascade. Has antimicrobial activity towards bacteria and fungi and exerts its antimicrobial activity probably via chelation of Zn2+ which is essential for microbial growth. Can induce cell death via autophagy and apoptosis and this occurs through the cross-talk of mitochondria and lysosomes via reactive oxygen species (ROS) and the process involves BNIP3. Can regulate neutrophil number and apoptosis by an anti-apoptotic effect; regulates cell survival via ITGAM/ITGB and TLR4 and a signaling mechanism involving MEK-ERK. Its role as an oxidant scavenger has a protective role in preventing exaggerated tissue damage by scavenging oxidants. Can act as a potent amplifier of inflammation in autoimmunity as well as in cancer development and tumor spread.

Isotype

IgG

Conjugate

Biotin

Storage Buffer

Preservative: 0.03% Proclin 300
Constituents: 50% Glycerol, 0.01M PBS, PH 7.4

Form

Liquid

Storage

Shipped at 4°C. Upon delivery aliquot and store at -20°C or -80°C. Avoid repeated freeze.

Purity

Caprylic Acid Ammonium Sulfate Precipitation purified

Research

Immunology

Literature

[1]Two calcium-binding proteins in infiltrate macrophages of rheumatoid arthritis.Odink K., Cerletti N., Bruggen J., Clerc R.G., Tarcsay L., Zwaldo G., Gerhards G., Schlegel R., Sorg C.Nature 330:80-82(1987) [2]Cloning and expression of two human genes

Additional information

Size	50μg, 100μg