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Hailey-Hailey disease is caused by mutations in ATP2C1 encoding a novel Ca2+ pump

Lookup NU author(s): Simon Carter, Dr Eugene Healy, Professor Tom Strachan

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Abstract

Hailey-Hailey disease (HHD) is an autosomal dominant skin disorder characterized by suprabasal cell separation (acantholysis) of the epidermis. Previous genetic linkage studies localized the gene to a 5 cM interval on human chromosome 3q21. After reducing the disease critical region to < 1 cM, we used a positional cloning strategy to identify the gene ATP2C1, which is mutated in HHD. ATP2C1 encodes a new class of P-type Ca2+-transport ATPase, which is the homologue for the rat SPLA and the yeast PMR1 medial Golgi Ca2+ pumps and is related to the sarco(endo)plasmic calcium ATPase (SERCA) and plasma membrane calcium ATPase (PCMA) families of Ca2+ pumps. The predicted protein has the same apparent transmembrane organization and contains all of the conserved domains present in other P-type ATPases. ATP2C1 produces two alternative splice variants of ~ 4.5 kb encoding predicted proteins of 903 and 923 amino acids. We identified 13 different mutations, including nonsense, frameshift insertion and deletions, splice-site mutations, and non-conservative missense mutations. This study demonstrates that defects in ATP2C1 cause HHD and together with the recent identification of ATP2A2 as the defective gene in Darier's disease, provide further evidence of the critical role of Ca2+ signaling in maintaining epidermal integrity.

Publication metadata

Author(s): Carter S; Healy E; Strachan T; Sudbrak R; Perrussel M; Lehrach H; Munro CS; Burge S; Hovnanian A; Monaco AP; Brown J; Dobson-Stone C; Ramser J; White J; Dissanayake M; Larregue M

Publication type: Article

Publication status: Published

Journal: Human Molecular Genetics

Year: 2000

Volume: 9

Issue: 7

Pages: 1131-1140

ISSN (print): 0964-6906

ISSN (electronic): 1460-2083

Publisher: Oxford University Press

URL: http://dx.doi.org/10.1093/hmg/9.7.1131

DOI: 10.1093/hmg/9.7.1131

PubMed id: 10767338

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