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Contributor Information

  • Name Fiona Watt
  • Institute Absolute Antibody ; Cancer Research UK, London Research Institute: Lincoln's Inn Fields

Tool Details

  • Tool name: Anti-Involucrin [SY5]
  • Clone: rSY5
  • Tool type: Antibodies
  • Tool sub-type: Primary antibody
  • Class: Recombinant
  • Conjugate: Unconjugated
  • Reactivity: Dog ; Human ; Pig ; Primate
  • Host: Mouse
  • Application: IHC ; IF ; IP ; WB
  • Description: Clone SY5 recognizes a protein of 66kDa-170kDa, identified as involucrin. In Western blotting of cultured human keratinocytes, this MAb reacts with a 120kDa protein. It stains the involucrin in a variety of sizes: 170kDa in MCF-7 cells, a doublet of ~115kDa and 150kDa in gorilla and owl monkey, 66kDa in dog, and a doublet of 105kDa in pig. Its epitope maps between codon 421-568 of human involucrin. Involucrin is expressed in a range of stratified squamous epithelia, including the cornea, which lacks a distinct cornified 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 is a protein precursor of the epidermal cornified envelope and a differentiation marker of human keratinocytes. SY5 is useful for studies of changes in involucrin expression in pathological studies. 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.
  • Immunogen: Purified involucrin from human keratinocytes.
  • Isotype: IgG1
  • Research area: Cancer; Cell signaling and signal transduction

  • For Research Use Only

Target Details

  • Target: Involucrin
  • Target background: Clone SY5 recognizes a protein of 66kDa-170kDa, identified as involucrin. In Western blotting of cultured human keratinocytes, this MAb reacts with a 120kDa protein. It stains the involucrin in a variety of sizes: 170kDa in MCF-7 cells, a doublet of ~115kDa and 150kDa in gorilla and owl monkey, 66kDa in dog, and a doublet of 105kDa in pig. Its epitope maps between codon 421-568 of human involucrin. Involucrin is expressed in a range of stratified squamous epithelia, including the cornea, which lacks a distinct cornified 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 is a protein precursor of the epidermal cornified envelope and a differentiation marker of human keratinocytes. SY5 is useful for studies of changes in involucrin expression in pathological studies. 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.

Application Details

  • Application: IHC ; IF ; IP ; WB

Handling

  • Format: Liquid
  • Concentration: 1 mg/ml
  • Storage buffer: PBS only
  • Storage conditions: -20°C
  • Shipping conditions: Shipping at 4°C

Documentation

References

  •   Original hybridoma first published in Hudson et al. 1992. Hybridoma. 11(3):367-79. PMID: 1500072.
  •   Characterisation of eight monoclonal antibodies to involucrin.