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| Citation | Rossi, E.A., Li, Z., Feng, H., Rubin, C.S. (1999). Characterization of the targeting, binding, and phosphorylation site domains of an A kinase anchor protein and a myristoylated alanine-rich C kinase substrate-like analog that are encoded by a single gene. J. Biol. Chem. 274(38): 27201--27210. (Export to RIS) | ||
| FlyBase ID | FBrf0111579 | ||
| Publication Type | Research paper | ||
| PubMed ID | 10480937 | ||
| PubMed Abstract | A novel Drosophila A kinase anchor protein, Drosophila A kinase anchor protein 200 (DAKAP200), is predicted to be involved in routing, mediating, and integrating signals carried by cAMP, Ca(2+), and diacylglycerol (Li, Z., Rossi, E. A., Hoheisel, J. D., Kalderon, D., and Rubin, C. S. (1999) J. Biol. Chem. 274, 27191-27200). Experiments designed to assess this hypothesis now (a) establish the function, boundaries and identity of critical amino acids of the protein kinase AII (PKAII) tethering site of DAKAP200; (b) demonstrate that residues 119-148 mediate binding with Ca(2+)-calmodulin and F-actin; (c) show that a polybasic region of DAKAP200 is a substrate for protein kinase C; (d) reveal that phosphorylation of the polybasic domain regulates affinity for F-actin and Ca(2+)-calmodulin; and (e) indicate that DAKAP200 is myristoylated and that this modification promotes targeting of DAKAP200 to plasma membrane. DeltaDAKAP200, a second product of the DAKAP200 gene, cannot tether PKAII. However, DeltaDAKAP200 is myristoylated and contains a phosphorylation site domain that binds Ca(2+)-calmodulin and F-actin. An atypical amino acid composition, a high level of negative charge, exceptional thermostability, unusual hydrodynamic properties, properties of the phosphorylation site domain, and a calculated M(r) of 38,000 suggest that DeltaDAKAP200 is a new member of the myristoylated alanine-rich C kinase substrate protein family. DAKAP200 is a potentially mobile, chimeric A kinase anchor protein-myristoylated alanine-rich C kinase substrate protein that may facilitate localized reception and targeted transmission of signals carried by cAMP, Ca(2+), and diacylglycerol. | ||
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| Language of Publication | English | ||
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| Publication Type | Journal | ||
| Abbreviation | J. Biol. Chem. | ||
| Title | Journal of Biological Chemistry | ||
| Publication Year | 1905- | ||
| ISBN/ISSN | 0021-9258 | ||
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Data from Reference
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| Alleles (2)
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| Genes (3)
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