Dap160, a neural-specific Eps15 homology and multiple SH3 domain-containing protein that interacts with Drosophila dynamin.
The discovery of overlapping hot spots of dynamin (Estes, P. S., Roos, J., van der Bliek, A., Kelly, R. B., Krishnan, K. S., and Ramaswami, M. (1996) J. Neurosci. 16, 5443-5456) and the heterotetrameric adaptor 2 complex (Gonzalez-Gaitan, M., and Jäckle, H. (1997) Cell 88, 767-776) in Drosophila nerve terminals led to the concept of zones of active endocytosis close to sites of active exocytosis. The proline-rich domain of Drosophila dynamin was used to identify and purify a third component of the endocytosis zones. Dap160 (dynamin-associated protein 160 kDa) is a membrane-associated, dynamin-binding protein of 160 kDa that has four putative src homology 3 domains and an Eps15 homology domain, motifs frequently found in proteins associated with endocytosis. The binding capacities of the four putative src homology 3 domains were examined individually and in combination and shown to bind known proteins that contained proline-rich domains. Each binding site, however, was different in its preference for binding partners. We suggest that Dap160 is a scaffolding protein that helps anchor proteins required for endocytosis at sites where they are needed in the Drosophila nerve terminal.
Roos
J
J
Department of Biochemistry and Biophysics and the Hormone Research Institute, University of California, San Francisco, California 94143-0534, USA.
Kelly
R B
RB
D033965:Adaptor Protein Complex alpha Subunits; D033942:Adaptor Proteins, Vesicular Transport; D000595:Amino Acid Sequence; D000818:Animals; D001483:Base Sequence; D001921:Brain / Q000378:metabolism; D002135:Calcium-Binding Proteins / Q000378:metabolism; D003600:Cytosol / Q000378:metabolism; D004330:Drosophila; D029721:Drosophila Proteins; D034281:Dynamins; D004705:Endocytosis; D020558:GTP Phosphohydrolases / Q000378:metabolism*; D008565:Membrane Proteins / Q000737:chemistry / Q000235:genetics / Q000378:metabolism*; D008870:Microtubules / Q000378:metabolism; D008969:Molecular Sequence Data; D009469:Neuromuscular Junction / Q000378:metabolism; D009479:Neuropeptides / Q000737:chemistry / Q000235:genetics / Q000378:metabolism*; D010750:Phosphoproteins / Q000378:metabolism; D011485:Protein Binding; D051381:Rats; D015398:Signal Transduction; D013569:Synapses / Q000378:metabolism; D033921:Vesicular Transport Proteins; D018909:src Homology Domains
D033965:Adaptor Protein Complex alpha Subunits; D033942:Adaptor Proteins, Vesicular Transport; D002135:Calcium-Binding Proteins; C113692:Dap160 protein, Drosophila; D029721:Drosophila Proteins; D008565:Membrane Proteins; D009479:Neuropeptides; D010750:Phosphoproteins; D033921:Vesicular Transport Proteins; D020558:GTP Phosphohydrolases; D034281:Dynamins