PMID- 10332028 OWN - NLM STAT- MEDLINE DCOM- 19990708 LR - 20190513 IS - 0964-6906 (Print) IS - 0964-6906 (Linking) VI - 8 IP - 6 DP - 1999 Jun TI - N-terminal deletion in a desmosomal cadherin causes the autosomal dominant skin disease striate palmoplantar keratoderma. PG - 971-6 AB - The N-terminal extracellular domain of the cadherins, calcium-dependent cell adhesion molecules, has been shown by X-ray crystallography to be involved in two types of interaction: lateral strand dimers and adhesive dimers. Here we describe the first human mutation in a cadherin present in desmosome cell junctions that removes a portion of this highly conserved first extracellular domain. The mutation, in the DSG1 gene coding for a desmoglein (Dsg1), results in the deletion of the first and much of the second beta-strand of the first cadherin repeat and part of the first Ca2+-binding site, and would be expected to compromise strand dimer formation. It causes a dominantly inherited skin disease, striate palmoplantar keratoderma (SPPK), mapping to chromosome 18q12.1, in which affected individuals have marked hyperkeratotic bands on the palms and soles. In a three generation Dutch family with SPPK, we have found a G-->A transition in the 3" splice acceptor site of intron 2 of the DSG1 gene which segregated with the disease phenotype. This causes aberrant splicing of exon 2 to exon 4, which are in-frame, with the consequent removal of exon 3 encoding part of the prosequence, the mature protein cleavage site and part of the first extracellular domain. This mutation emphasizes the importance of this part of the molecule for cadherin function, and of the Dsg1 protein and hence desmosomes in epidermal function. FAU - Rickman, L AU - Rickman L AD - Division of Membrane Biology, National Institute for Medical Research, The Ridgeway, Mill Hill, London, UK. FAU - Simrak, D AU - Simrak D FAU - Stevens, H P AU - Stevens HP FAU - Hunt, D M AU - Hunt DM FAU - King, I A AU - King IA FAU - Bryant, S P AU - Bryant SP FAU - Eady, R A AU - Eady RA FAU - Leigh, I M AU - Leigh IM FAU - Arnemann, J AU - Arnemann J FAU - Magee, A I AU - Magee AI FAU - Kelsell, D P AU - Kelsell DP FAU - Buxton, R S AU - Buxton RS LA - eng GR - Wellcome Trust/United Kingdom PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - England TA - Hum Mol Genet JT - Human molecular genetics JID - 9208958 RN - 0 (Cadherins) RN - 0 (Cytoskeletal Proteins) RN - 0 (DSG1 protein, human) RN - 0 (Desmoglein 1) RN - 0 (Desmogleins) RN - 0 (Desmoplakins) RN - 0 (RNA, Messenger) RN - 9007-49-2 (DNA) SB - IM MH - Amino Acid Sequence MH - Base Sequence MH - Cadherins/*genetics MH - Cytoskeletal Proteins/genetics MH - DNA/chemistry/genetics MH - DNA Mutational Analysis MH - Desmoglein 1 MH - Desmogleins MH - Desmoplakins MH - Desmosomes/chemistry MH - Exons/genetics MH - Family Health MH - Female MH - Foot Dermatoses/genetics/pathology MH - *Genes, Dominant MH - Genetic Linkage MH - Humans MH - Keratoderma, Palmoplantar/*genetics/pathology MH - Male MH - Molecular Sequence Data MH - Pedigree MH - Point Mutation MH - Polymorphism, Single-Stranded Conformational MH - RNA Splicing/genetics MH - RNA, Messenger/genetics MH - Sequence Deletion MH - Skin/*metabolism/pathology EDAT- 1999/05/20 00:00 MHDA- 1999/05/20 00:01 CRDT- 1999/05/20 00:00 PHST- 1999/05/20 00:00 [pubmed] PHST- 1999/05/20 00:01 [medline] PHST- 1999/05/20 00:00 [entrez] AID - ddc116 [pii] AID - 10.1093/hmg/8.6.971 [doi] PST - ppublish SO - Hum Mol Genet. 1999 Jun;8(6):971-6. doi: 10.1093/hmg/8.6.971.