This antibody recognizes a protein of 66-170 kDa, identified as involucrin. In Weste blotting of cultured human keratinocytes, this antibody reacts with a 120 kDa protein. It stains the involucrin in a variety of sizes: 170 kDa in MCF-7 cells, a doublet of ~115 and 150kDa in gorilla and owl monkey, 66kDa in dog, and a doublet of 105kDa in pig. Its epitope maps between amino acids 421-568 of human involucrin. Involucrin is expressed in a range of stratified squamous epithelia, including the coea, which lacks a distinct coified layer. In normal epidermis, it is first expressed in the upper spinous layers, and in keratinocyte cultures, all cells that have left the basal layer express it. Involucrin expression is altered in pathological conditions: in psoriasis and other benign epidermal hyperplasias, involucrin expression begins closer to the basal layer than normal; expression is abnormal in squamous cell carcinomas and premalignant lesions, and is reduced in severe dysplasias of the larynx and cervix.
Formulation
1 mg/ml in 1X PBS; BSA free, sodium azide free
Host
Mouse
Immunogen Region
Purified Involucrin from human keratinocytes was used as the immunogen for this antibody.
Isotype
Mouse IgG1, kappa
Species Reactivity
Human
Note
The concentration stated for each application is a general starting point. Variations in protocols, secondaries and substrates may require the antibody to be titered up or down for optimal performance.1. Staining of formalin-fixed tissues is enhanced by digestion with trypsin Protease XXV (Sigma) at 1mg/ml PBS for 5 min at 37°C.2. The prediluted format is supplied in a dropper bottle and is optimized for use in IHC. After epitope retrieval step (if required), drip mAb solution onto the tissue section and incubate at RT for 30 min.
Format
Purified
Purity
Protein G affinity chromatography
Storage
Store the Involucrin antibody at 2-8oC (with azide) or aliquot and store at -20oC or colder (without azide).
Applications
IHC-P
Description
Immunohistochemistry (FFPE): 0.1-0.2ug/ml for 30 min at RT