Anti Human Calcium Binding Protein 100A9 (hS100A9) Monoclonal Antibody
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Anti Human Calcium Binding Protein 100A9 (hS100A9) Monoclonal Antibody

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Anti Human Calcium Binding Protein 100A9 (hS100A9) Monoclonal Antibody

Anti Human Calcium Binding Protein 100A9 (hS100A9) Monoclonal Antibody

Clone HI471    Catalog#: A50471

DescriptionHuman S100A9, also known as MRP-14, Calgranulin-B or p14, belongs to the S100 family of calcium-binding proteins with EF hand domains and has a molecular weight of about 14 kD. The protein consists of 114 amino acids and its basic structural units are: an N-terminal helix region, an EF hand calcium-binding region, two helix regions, a second EF hand calcium-binding region, and two additional helix regions. S100A9 usually forms a heterodimer with S100A8 through non-covalent bonding. In the presence of calcium, the S100A8/S100A9 dimer can form a tetramer. During acute and chronic inflammation, S100A9 is expressed in neutrophils, monocytes, and macrophages, so it can be used as an inflammatory marker. The similarity between human S100A9 and mouse or rat S100A9 is 62% and 57%, respectively.


Mouse IgG

Species reactivity:



Tissue culture


Protein A/G




E.Coli express hS100A9 protein


Store at +4°C short term (1-2 weeks). Store at -20°C long term.


PBS, pH 7.4, Filter sterilized. Endotoxin level tests less than 0.06 EU/ug.




  1. Shabani F,Farasat A, et al.(2018).Calprotectin (S100A8/S100A9): a keyprotein between inflammation and cancer.Inflamm Res.Oct; 67(10):801-812.
  2. Inciarte-Mundo J, Frade-Sosa B,et al.(2022). From bench to bedside:Calprotectin (S100A8/S100A9) as a biomarker in rheumatoid arthritis. FrontImmunolNov 3:13:1001025.

Intended for research use only. Not for human, therapeutic, or diagnostic applications.

The buyer cannot sell or otherwise transfer this product for Commercial Purposes without written approval of Humimmu LLC.  

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