Presenilin/crk binding polypeptides (pcbp) and methods of use thereof

摘要

The invention provide Presenilin/Crk binding polypeptides characterized by interacting with Presenilin polypeptides, modulating intracellular calcium mobilization, and redistributing from cytoplasm to membrane in the presence of a Presenilin polypeptide. The Presenilin/Crk binding polypeptides are further characterized by interacting with a Crk polypeptide and by containing at least one SH3 domain. Also provided are isolated nucleic acids encoding Presenilin/Crk binding polypeptides, antibodies that bind to Presenilin/Crk binding polypeptides, expression vectors containing Presenilin/Crk binding polynucleotides and host cells transformed by Presenilin/Crk binding polynucleotides. The invention provides a method for identifying a compound that modulates intracellular calcium mobilization and/or modulates Presenilin/Crk binding protein levels or activity. The invention includes a method of treating a disorder associated with Presenilin/Crk binding protein. Also provided is a method of diagnosis of a subject having or at risk of having a disorder of the nervous system such as Alzheimer's disease.