Human S100A9 (S100Calcium Binding Protein A9) Sandwich ELISA (STJE0019864)

SKU:
STJE0019864

Shipping:
Free Shipping
Current Stock:
Applications: ELISA
Reactivity: Human
Note: FOR SCIENTIFIC EDUCATIONAL RESEARCH USE ONLY (RUO). MUST NOT BE USED IN DIAGNOSTIC OR OTHER MEDICAL APPLICATIONS.
Sensitivity: 0.12 pg/mL
Detection Limit: 0.31-20 pg/mL
Short Description: This S100A9 Sandwich ELISA is an in-vitro enzyme-linked immunosorbent assay for the measurement of samples in human cell culture supernatant, serum and plasma (EDTA, citrate, heparin).
Storage Instruction: If unopened the kit may be stored at 2-8°C for up to 1 month. If the kit will not be used within 1 month, store the components separately, according to the component table in the manual.
Assay Time: 3.5h
Detection: Colormetric
Gene Symbol: S100A9
Gene ID: 6280
Uniprot ID: S10A9_HUMAN
Specificity: This kit recognizes Human S100A9 in samples. No significant cross-reactivity or interference between Human S100A9 and analogues was observed.
Sample Type: serum, plasma and other biological fluids
Tissue Specificity Calprotectin (S100A8/9) is predominantly expressed in myeloid cells. Except for inflammatory conditions, the expression is restricted to a specific stage of myeloid differentiation since both proteins are expressed in circulating neutrophils and monocytes but are absent in normal tissue macrophages and lymphocytes. Under chronic inflammatory conditions, such as psoriasis and malignant disorders, also expressed in the epidermis. Found in high concentrations at local sites of inflammation or in the serum of patients with inflammatory diseases such as rheumatoid, cystic fibrosis, inflammatory bowel disease, Crohn's disease, giant cell arteritis, cystic fibrosis, Sjogren's syndrome, systemic lupus erythematosus, and progressive systemic sclerosis. Involved in the formation and deposition of amyloids in the aging prostate known as corpora amylacea inclusions. Strongly up-regulated in many tumors, including gastric, esophageal, colon, pancreatic, bladder, ovarian, thyroid, breast and skin cancers.
Post Translational Modifications Phosphorylated. Phosphorylation inhibits activation of tubulin polymerization. S-nitrosylation of Cys-3 is implicated in LDL(ox)-induced S-nitrosylation of GAPDH at 'Cys-247' through a transnitrosylase mechanism involving a iNOS-S100A8/9 complex. Methylation at His-105 by METTL9 reduces zinc-binding without affecting heterodimerization with S100A8.
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, transferring 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 pro-inflammatory, antimicrobial, oxidant-scavenging and apoptosis-inducing activities. Its pro-inflammatory 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 pro-inflammatory cascade. Has antimicrobial activity towards bacteria and fungi and exerts its antimicrobial activity probably via chelation of Zn(2+) 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. Has transnitrosylase activity.in oxidatively-modified low-densitity lipoprotein (LDL(ox))-induced S-nitrosylation of GAPDH on 'Cys-247' proposed to transfer the NO moiety from NOS2/iNOS to GAPDH via its own S-nitrosylated Cys-3. The iNOS-S100A8/A9 transnitrosylase complex is proposed to also direct selective inflammatory stimulus-dependent S-nitrosylation of multiple targets such as ANXA5, EZR, MSN and VIM by recognizing a IL-x-C-x-x-DE motif.
Protein Name Protein S100-A9
Calgranulin-B
Calprotectin L1h Subunit
Leukocyte L1 Complex Heavy Chain
Migration Inhibitory Factor-Related Protein 14
Mrp-14
P14
S100 Calcium-Binding Protein A9
Database Links Reactome: R-HSA-1236974
Reactome: R-HSA-166058
Reactome: R-HSA-5602498
Reactome: R-HSA-5603041
Reactome: R-HSA-5668599
Reactome: R-HSA-5686938
Reactome: R-HSA-6798695
Reactome: R-HSA-6799990
Cellular Localisation Secreted
Cytoplasm
Cytoskeleton
Cell Membrane
Peripheral Membrane Protein
Predominantly Localized In The Cytoplasm
Upon Elevation Of The Intracellular Calcium Level
Translocated From The Cytoplasm To The Cytoskeleton And The Cell Membrane
Upon Neutrophil Activation Or Endothelial Adhesion Of Monocytes
Is Secreted Via A Microtubule-Mediated
Alternative Pathway
Alternative ELISA Names Protein S100-A9 ELISA kit
Calgranulin-B ELISA kit
Calprotectin L1h Subunit ELISA kit
Leukocyte L1 Complex Heavy Chain ELISA kit
Migration Inhibitory Factor-Related Protein 14 ELISA kit
Mrp-14 ELISA kit
P14 ELISA kit
S100 Calcium-Binding Protein A9 ELISA kit
S100A9 ELISA kit
CAGB ELISA kit
CFAG ELISA kit
MRP14 ELISA kit
Specificity This kit recognizes Human S100A9 in samples. No significant cross-reactivity or interference between Human S100A9 and analogues was observed.
Reproducibility Both intra-CV and inter-CV are

Information sourced from Uniprot.org


Item Specifications Storage
Micro ELISA Plate (Dismountable) 96T: 8 wells ×12 strips strips -20℃, 6 months
Reference Standard 96T: 2 vials 48T: 1 vial -20℃, 6 months
Concentrated Biotinylated Detection Ab (100×) 96T: 1 vial, 120 μL 60 μL -20℃, 6 months
Concentrated HRP Conjugate (100×) 96T: 1 vial, 120 μL 60 μL -20℃ (Protect from light), 6 months
Reference Standard & Sample Diluent 1 vial, 20 mL 2-8°C, 6 months
Biotinylated Detection Ab Diluent 1 vial, 14 mL 2-8°C, 6 months
HRP Conjugate Diluent 1 vial, 14 mL 2-8°C, 6 months
Concentrated Wash Buffer (25×) 1 vial, 30 mL 2-8°C, 6 months
Substrate Reagent 1 vial, 10 mL 2-8℃ (Protect from light)
Stop Solution 1 vial, 10 mL 2-8°C
Plate Sealer 5 pieces
Manual 1 copy
Certificate of Analysis 1 copy

Sample Type Range (%) Average Recovery (%)
Serum(n=8) 85-98 91
EDTA plasma (n=8) 90-103 97
Cell culture media (n=8) 91-104 98

Intra-assay Precision Intra-assay Precision Intra-assay Precision Inter-assay Precision Inter-assay Precision Inter-assay Precision
Sample 1.00 2.00 3.00 1.00 2.00 3.00
n 20.00 20.00 20.00 20.00 20.00 20.00
Mean (pg/mL) 0.95 2.24 7.20 0.88 2.45 7.85
Standard deviation 0.06 0.12 0.28 0.05 0.12 0.37
CV (%) 6.37 5.27 3.95 5.58 4.98 4.70
12 months for antibodies. 6 months for ELISA Kits. Please see website T&Cs for further guidance