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  • KD/KO Validated

S100A9 Polyclonal antibody

S100A9 Polyclonal Antibody for WB, IP, IF, IHC, ELISA

Host / Isotype

Rabbit / IgG


human, mouse and More (1)





Cat no : 26992-1-AP


60B8AG, CAGB, Calgranulin B, Calprotectin L1H subunit, CFAG, CGLB, L1AG, LIAG, MAC387, MIF, MRP 14, MRP14, NIF, P14, Protein S100 A9, S100A9

Tested Applications

Positive WB detected inHL-60 cells, MCF-7 cells, THP-1 cells
Positive IP detected inMCF-7 cells
Positive IHC detected inhuman breast cancer tissue, human liver cancer tissue, mouse spleen tissue, human tonsillitis tissue, human oesophagus cancer tissue
Note: suggested antigen retrieval with TE buffer pH 9.0; (*) Alternatively, antigen retrieval may be performed with citrate buffer pH 6.0
Positive IF detected inHeLa cells, A549 cells, HepG2 cells

Recommended dilution

Western Blot (WB)WB : 1:1000-1:4000
Immunoprecipitation (IP)IP : 0.5-4.0 ug for 1.0-3.0 mg of total protein lysate
Immunohistochemistry (IHC)IHC : 1:50-1:500
Immunofluorescence (IF)IF : 1:200-1:800
It is recommended that this reagent should be titrated in each testing system to obtain optimal results.
Sample-dependent, Check data in validation data gallery.

Product Information

26992-1-AP targets S100A9 in WB, IP, IF, FC, IHC, CoIP, ELISA applications and shows reactivity with human, mouse samples.

Tested Reactivity human, mouse
Cited Reactivityhuman, mouse, rat
Host / Isotype Rabbit / IgG
Class Polyclonal
Type Antibody
Immunogen S100A9 fusion protein Ag25764
Full Name S100 calcium binding protein A9
Calculated Molecular Weight 13 kDa
Observed Molecular Weight 14 kDa
GenBank Accession NumberBC047681
Gene Symbol S100A9
Gene ID (NCBI) 6280
Conjugate Unconjugated
Form Liquid
Purification MethodAntigen affinity purification
Storage Buffer PBS with 0.02% sodium azide and 50% glycerol pH 7.3.
Storage ConditionsStore at -20°C. Stable for one year after shipment. Aliquoting is unnecessary for -20oC storage. 20ul sizes contain 0.1% BSA.

Background Information

S100A9 is a calcium binding protein as a member of the S100 family of proteins. S100 proteins are low molecular weight (9 to 14 kDa) intracellular calcium-binding proteins that control key cellular pathways including regulation of the cytoskeleton, cell migration and adhesion, and host oxidative defense. S100A9 may exist as a homodimer, heterodimer with an S100A8 partner (S100A8/A9), or as a heterotetramer with an S100A8 partner(S100A8/A9). S100A8 and S100A9 are found intracellularly in granulocytes, monocytes, and early differentiation stages of macrophages.


Product Specific Protocols
WB protocol for S100A9 antibody 26992-1-APDownload protocol
IHC protocol for S100A9 antibody 26992-1-APDownload protocol
IF protocol for S100A9 antibody 26992-1-APDownload protocol
IP protocol for S100A9 antibody 26992-1-APDownload protocol
Standard Protocols
Click here to view our Standard Protocols



Cell Res

Comparison of viral RNA-host protein interactomes across pathogenic RNA viruses informs rapid antiviral drug discovery for SARS-CoV-2.

Authors - Shaojun Zhang

Cell Rep Med

Discovery of galectin-8 as an LILRB4 ligand driving M-MDSCs defines a class of antibodies to fight solid tumors

Authors - Yiting Wang

Sci Adv

Gut microbiota from patients with arteriosclerotic CSVD induces higher IL-17A production in neutrophils via activating RORγt.

Authors - Wei Cai


Pancreatic ductal deletion of S100A9 alleviates acute pancreatitis by targeting VNN1-mediated ROS release to inhibit NLRP3 activation.

Authors - Hong Xiang
  • KD Validated


Hepatic RACK1 deficiency protects against fulminant hepatitis through myeloid-derived suppressor cells.

Authors - Genyu Liu

Acta Physiol (Oxf)

Keratin 1 attenuates hypoxic pulmonary artery hypertension by suppressing pulmonary artery media smooth muscle expansion.

Authors - Li Zhang