|
||
J. Cell Biol.,
Volume 145, Number 6, June 14, 1999 1277-1292



* Medical Biotechnology Center and Department of Neurology and It is well established that mutations in the
presenilin 1 and 2 genes cause the majority of early onset Alzheimer's disease (AD). However, our understanding of the cellular functions of the proteins they
encode remains rudimentary. Knowledge of proteins with which the presenilins interact should lead to a better understanding of presenilin function in normal and
disease states. We report here the identification of a calcium-binding protein, calmyrin, that interacts preferentially with presenilin 2 (PS2). Calmyrin is myristoylated, membrane-associated, and colocalizes with PS2 when the two proteins are overexpressed in HeLa cells.
Yeast two-hybrid liquid assays, affinity chromatography, and coimmunoprecipitation experiments confirm
binding between PS2 and calmyrin. Functionally, calmyrin and PS2 increase cell death when cotransfected into HeLa cells. These results allude to several
provocative possibilities for a dynamic role of calmyrin
in signaling, cell death, and AD.
Division of Human Genetics, University of Maryland,
Baltimore, Maryland 21201
This article has been cited by other articles:
|
|