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  • 1
    Publication Date: 1997-11-21
    Description: The gene responsible for autosomal dominant, fully penetrant, nonsyndromic sensorineural progressive hearing loss in a large Costa Rican kindred was previously localized to chromosome 5q31 and named DFNA1. Deafness in the family is associated with a protein-truncating mutation in a human homolog of the Drosophila gene diaphanous. The truncation is caused by a single nucleotide substitution in a splice donor, leading to a four-base pair insertion in messenger RNA and a frameshift. The diaphanous protein is a profilin ligand and target of Rho that regulates polymerization of actin, the major component of the cytoskeleton of hair cells of the inner ear.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lynch, E D -- Lee, M K -- Morrow, J E -- Welcsh, P L -- Leon, P E -- King, M C -- R01-DC01076/DC/NIDCD NIH HHS/ -- New York, N.Y. -- Science. 1997 Nov 14;278(5341):1315-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Medicine, University of Washington, Seattle, WA 98195, USA. eric@lynch.com〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9360932" target="_blank"〉PubMed〈/a〉
    Keywords: Actins/*metabolism ; *Adaptor Proteins, Signal Transducing ; Amino Acid Sequence ; Animals ; Base Sequence ; Carrier Proteins/chemistry/*genetics/physiology ; Chromosome Mapping ; Chromosomes, Human, Pair 5 ; Cochlea/metabolism ; *Contractile Proteins ; Deafness/*genetics/metabolism/pathology ; Drosophila/genetics ; *Drosophila Proteins ; Female ; Frameshift Mutation ; GTP-Binding Proteins/metabolism ; Gene Expression ; Hair Cells, Auditory/*metabolism/ultrastructure ; Humans ; Male ; Microfilament Proteins/metabolism ; Molecular Sequence Data ; Pedigree ; Profilins ; RNA Splicing ; RNA, Messenger/genetics/metabolism ; X Chromosome
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 2
    Publication Date: 1998-04-16
    Description: The molecular basis for autosomal dominant progressive nonsyndromic hearing loss in an Israeli Jewish family, Family H, has been determined. Linkage analysis placed this deafness locus, DFNA15, on chromosome 5q31. The human homolog of mouse Pou4f3, a member of the POU-domain family of transcription factors whose targeted inactivation causes profound deafness in mice, was physically mapped to the 25-centimorgan DFNA15-linked region. An 8-base pair deletion in the POU homeodomain of human POU4F3 was identified in Family H. A truncated protein presumably impairs high-affinity binding of this transcription factor in a dominant negative fashion, leading to progressive hearing loss.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Vahava, O -- Morell, R -- Lynch, E D -- Weiss, S -- Kagan, M E -- Ahituv, N -- Morrow, J E -- Lee, M K -- Skvorak, A B -- Morton, C C -- Blumenfeld, A -- Frydman, M -- Friedman, T B -- King, M C -- Avraham, K B -- R01 DC01076/DC/NIDCD NIH HHS/ -- Z01 DC 00039/DC/NIDCD NIH HHS/ -- New York, N.Y. -- Science. 1998 Mar 20;279(5358):1950-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Human Genetics, Sackler School of Medicine, Tel Aviv University, Tel Aviv 69978, Israel.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9506947" target="_blank"〉PubMed〈/a〉
    Keywords: Adult ; Animals ; Cell Differentiation ; Chromosome Mapping ; Chromosomes, Human, Pair 5/genetics ; Deafness/*genetics ; Female ; Gene Expression ; Genetic Linkage ; Hair Cells, Auditory/cytology/physiology ; Hearing Loss, Sensorineural/*genetics ; Homeodomain Proteins/*genetics/metabolism ; Humans ; Israel ; Jews/genetics ; Male ; Mice ; Middle Aged ; Molecular Sequence Data ; Pedigree ; Polymerase Chain Reaction ; Protein Structure, Secondary ; Sequence Deletion ; Transcription Factor Brn-3C ; Transcription Factors/*genetics/metabolism/physiology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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