The actin-associated kelch-domain protein Keap1 acts upstream of the transcription factor Nrf2. Upon stress, Keap1 releases Nrf2 to activate the transcription of target genes. A new study now shows that these targets include keratins and cornified envelope proteins, possibly explaining why certain keratin mutations predispose to chemical injury. The Keap1-Nrf2 partnership offers a mechanistic explanation for the response of tissues to mechanical and chemical injury.
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Magin, T. A keaper and a striker maintain epidermal homeostasis. Nat Genet 35, 202–204 (2003). https://doi.org/10.1038/ng1103-202
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DOI: https://doi.org/10.1038/ng1103-202
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