Cytokeratin 5 (KRT5) (Basal, Myoepithelial & Mesothelial Cell Marker) [KRT5/2080]



This MAb recognizes a protein of 58kDa, which is identified as Cytokeratin 5 (KRT5). This type II cytokeratin is specifically expressed in the basal layer of the epidermis with family member KRT14. Antibodies to KRT5 identify basal cells of squamous and glandular epithelia, myoepithelia, and mesothelium.Anti-cytokeratin 5 has been reported useful in the differential diagnosis of metastatic carcinoma in the pleura versus epithelioid mesothelioma. Almost all squamous cell carcinomas, half of transitional carcinomas, and many undifferentiated large cell carcinomas express.Anti-KRT5, along with anti-p63, affords a high sensitivity and specificity for squamous differentiation. Myoepithelial cells of the breast, glandular epithelia, and basal cells of the prostate are labeled with anti-KRT5.

Product Properties & Targets

Species Reactivity
Gene Name
Mol. Weight of Antigen
Recombinant human Cytokeratin 5 (KRT5) protein fragment (around aa 318-491) (exact sequence is proprietary)

Database Links

Entrez Gene ID

Additional Information

Human Gene Symbol
Chromosome Location

Known Applications & Suggested Dilutions

  • Immunohistochemistry (Formalin-fixed) (1:50-1:100 for 30 minutes at RT) (Staining of formalin-fixed tissues requires heating tissue sections in 10mM Tris with 1mM EDTA, pH 9.0, for 45 min at 95&degC followed by cooling at RT for 20 minutes)
  • Optimal dilution for a specific application should be determined.

Key References

  • Ordonez NG. Human Pathology. 2007; 38:1-16.

PubMed Links

Storage & Stability

Store at 2 to 8°C. Antibody is stable for 24 months. Non-hazardous. No MSDS required.


This antibody is available for research use only and is not approved for use in diagnosis.

Supplied as

Tissue culture supernatant with 0.05% Azide. Contact us if you require it in a different format.


There are no warranties, expressed or implied, which extend beyond this description. Company is not liable for any personal injury or economic loss resulting from this product.

Recombinant mouse monoclonal antibodies and recombinant rabbit monoclonals to support your research

Shop Primary Antibodies