Journal
NEUROSCIENCE LETTERS
Volume 464, Issue 3, Pages 218-221Publisher
ELSEVIER IRELAND LTD
DOI: 10.1016/j.neulet.2009.08.054
Keywords
Brain; Estrogen receptor; Protein interaction; beta-Tubulin expression; Aging
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Funding
- University Grants Commission, India.
- Department of Biotechnology, Govt. of India [BT/PR3593/Med/14/468/2003]
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In the previous paper, we reported that four proteins of 100 kDa. 80 kDa, 68 kDa and 50 kDa from the mouse brain interacted with estrogen receptor (ER) alpha-transactivation domain (TAD) and 68 kDa protein showed age and sex dependent changes. Here, we describe the identification of 50 kDa protein as beta-tubulin and changes in its interaction with age and sex in mouse brain. It is a microtubule-associated protein which binds to activation function (AF)-1 region of ER alpha-TAD and is involved in estrogen signaling. The extent of interaction of mouse ER alpha-TAD with beta-tubulin was higher in adult female as compared to old female and adult male. However, the expression of beta-tubulin showed no significant change with age and sex. Such age and sex dependent alteration in the interaction of P-tubulin might account for the estrogen-mediated brain functions during aging. (C) 2009 Elsevier Ireland Ltd. All rights reserved.
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