Nature Genetics
3, 327 - 332 (1992)
doi:10.1038/ng0493-327
A missense mutation in the rod domain of keratin 14 associated with recessive epidermolysis bullosa simplexA. Hovnanian1, E. Pollack1, L. Hilal1, A. Rochat2, C. Prost3, Y. Barrandon2
& M. Goossens1
1Laboratoire de Génétique moléculaire, INSERM U.91, Hôpital Henri Mondor, 94010 Créteil, France
2Département de Biologie, Ecole Normale Supérieure, 75230 Paris, Cedex 05, France
3Service de Dermatologie, Hôpital Saint-Louis, 75010 Paris, France Correspondence should be addressed to A.H. Epidermolysis bullosa simplex (EBS) is a group of epidermal blistering diseases almost invariably transmitted as a dominant trait, which has recently been shown to arise from mutations in keratins 14 and 5 (K14 and K5). We describe a family with recessive EBS in which the disease is tightly linked to the substitution of the highly conserved glutamic acid-144 to alanine in the first helical segment of the rod domain of keratin 14. In contrast, linkage with keratin 5 was excluded. The loss of an ionic interaction with keratin 5 is likely to affect K14−K5 heterodimer formation. Our data suggest that this mutation underlies EBS in our family, and that mutations in keratin genes may impair the mechanical integrity of basal keratinocytes in a recessive as well as dominant fashion. REFERENCES
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