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ER<i>β</i> interacting protein ERAP 140 shows age dependent alteration in its interaction and expression in male mouse brain

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Journal: World Journal of Neuroscience
ISSN 2162-2000

Volume: 03;
Issue: 01;
Start page: 1;
Date: 2013;
Original page

Keywords: Estrogen Receptor β | Alpha Helices and Coils | Interacting Proteins | SOPMA | PSIPRED | Aging Brain

ABSTRACT
Estrogen mediates multiple functions in the brain through the interaction of estrogen receptor (ER)α and ERβ with a host of nuclear proteins that regulate specific gene transcription. We have identified ERAP 140, AIB 1, Trk A, Src, pCREB and CREB as ERβ interacting proteins in the mouse brain. Earlier we showed that the interaction of ERβ with ERAP 140 decreased whereas its expression increased with aging in the brain of female mice. Here we report that the pattern of interaction and expression is different in male mice as compared to females. The interaction of ERAP 140 with ERβ decreased in adult male mouse brain as compared to young and remained almost similar in old whereas its expression was higher in adult than young and old, which were almost similar. Further in silico secondary structure analysis by self-optimized prediction method alignment (SOPMA) and PSIPRED revealed that ERβ interacting proteins were rich in alpha helices and coils. Such findings might help to design ER modulators which can regulate specific functions of estrogen in the brain during aging and degenerative diseases.
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