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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

An alanine to proline mutation in the 1A rod domain of the keratin 10 chain in epidermolytic hyperkeratosis.

We report a mutation in a case of epidermolytic hyperkeratosis that results in a proline for alanine substitution in the residue position 12 of the 1A subdomain of the keratin 10 chain (codon 158). The disease phenotype is consistent with the inappropriate substitution of a proline near the beginning of the rod domain, because it is likely to seriously disrupt the structural organization of coiled-coil molecules within keratin intermediate filaments. Mutations/substitutions in this position have not been reported in any keratin disease. Position 12 is an alanine in all intermediate filament chains, and lies in the outer b heptad position of the coiled-coil. In vitro peptide interference assembly assays revealed that substitutions that alter residue size or charge at this position primarily interfere with keratin filament elongation.[1]


  1. An alanine to proline mutation in the 1A rod domain of the keratin 10 chain in epidermolytic hyperkeratosis. Yang, J.M., Yoneda, K., Morita, E., Imamura, S., Nam, K., Lee, E.S., Steinert, P.M. J. Invest. Dermatol. (1997) [Pubmed]
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