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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Elias, P. M. Marekov, L. N. Tarcsa, E. Digiovanna, J. J. Steinert, P. M. Candi, E. Compton, J. G. |
| Description | Author Affiliation: Candi E ( Laboratory of Skin Biology, National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, MD 20892-2752, USA.); |
| Abstract | We have addressed the question of how keratin intermediate filaments are associated with the cell envelope at the periphery of cornified epidermal cells. Many peptides from human epidermal cell envelopes containing isopeptide crosslinks inserted by transglutaminases in vivo have been characterized. A major subset involves the type II keratin chains keratin 1, 2e, 5, or 6 crosslinked to several protein partners through a lysine residue located in a conserved region of the V1 subdomain of their head domains. This sequence specificity was confirmed in in vitro crosslinking experiments. Previously the causative mutation in a family with diffuse nonepidermolytic palmar-plantar keratoderma was shown to be the loss in one allele of the same lysine residue of the keratin 1 chain. Ultrastructural studies of affected palm epidermis have revealed abnormalities in the organization of keratin filaments subjacent to the cell envelope and in the shape of the cornified cells. Together, these data suggest a mechanism for the coordination of cornified cell structure by permanent covalent attachment of the keratin intermediate filament cytoskeleton to the cell envelope by transglutaminase crosslinking. Furthermore, these studies identify the essential role of a conserved lysine residue on the head domains of type II keratins in the supramolecular organization of keratin filaments in cells. |
| ISSN | 00278424 |
| e-ISSN | 10916490 |
| Journal | Proceedings of the National Academy of Sciences of the United States of America |
| Issue Number | 5 |
| Volume Number | 95 |
| Language | English |
| Publisher | National Academy of Sciences |
| Publisher Date | 1998-04-01 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Conserved Sequence Intermediate Filaments Metabolism Keratins Chemistry Lysine Peptide Fragments Skin Transglutaminases Amino Acid Sequence Binding Sites Cell Membrane Pathology Ultrastructure Cells, Cultured Cross-Linking Reagents Cytoskeletal Proteins Desmoplakins Gene Library Keratinocytes Keratoderma, Palmoplantar Macromolecular Substances Models, Molecular Models, Structural Molecular Sequence Data Polymerase Chain Reaction Protein Conformation Multidisciplinary |
| Content Type | Text |
| Resource Type | Article |
| Subject | Multidisciplinary |
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