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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Veron, M. Tsigelny, I. Taylor, S. S. Ten Eyck, L. F. Radzio-andzelm, E. |
| Description | Author Affiliation: Veron M ( Unité de Biochimie Cellulaire, Centre National de la Recherche Scientifique: URA1129, Institut Pasteur, France.); |
| Abstract | Residues 40-300 of the mammalian catalytic (C) subunit of cAMP-dependent protein kinase define a conserved bilobal catalytic core shared by all eukaryotic protein kinases. Contiguous to the core is an extended amphipathic alpha-helix (A helix). Trp30, a prominent feature of this helix, fills a deep hydrophobic pocket between the two lobes on the surface opposite to the active site. The C subunit in Dictyostelium discoideum shows sequence conservation of residues 40-350 with the mouse enzyme but contains an N-terminal extension of 332 residues. A sequence corresponding to the A helix contiguous to the core is absent. However, we have now identified a remote A-helix motif (residues 77-98). When the core of the Dictyostelium C subunit was modeled, based on the mouse C subunit, complementarity between this putative A helix and the surface of the core was found to be conserved. Analysis of other protein kinases reveals that the A-helix motif is not restricted to cAMP-dependent protein kinase. In the Src-related family of protein kinases, for example, an A helix is very likely contiguous to the core, thus serving as a linker between the conserved catalytic core and the Src homology 2 domain. We predict that an A-helix motif complementary to the core will be a conserved feature of most eukaryotic protein kinases. |
| ISSN | 00278424 |
| e-ISSN | 10916490 |
| Journal | Proceedings of the National Academy of Sciences of the United States of America |
| Issue Number | 22 |
| Volume Number | 90 |
| Language | English |
| Publisher | National Academy of Sciences |
| Publisher Date | 1993-12-01 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Cyclic AMP-Dependent Protein Kinases Chemistry Dictyostelium Enzymology Amino Acid Sequence Animals Casein Kinases Mice Models, Molecular Molecular Sequence Data Protein Kinases Protein Structure, Secondary Protein Structure, Tertiary Protein-Tyrosine Kinases Proto-Oncogene Proteins Pp60(c-src) Sequence Alignment Sequence Homology, Amino Acid Comparative Study Research Support, Non-U.S. Gov't Research Support, U.S. Gov't, P.H.S. Multidisciplinary |
| Content Type | Text |
| Resource Type | Article |
| Subject | Multidisciplinary |
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