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Plos Biology : Recognition and Accommodation at the Androgen Receptor Coactivator Binding Interface, Volume 2

By Schibler, Ueli

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Book Id: WPLBN0003923036
Format Type: PDF eBook :
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Reproduction Date: 2015

Title: Plos Biology : Recognition and Accommodation at the Androgen Receptor Coactivator Binding Interface, Volume 2  
Author: Schibler, Ueli
Volume: Volume 2
Language: English
Subject: Journals, Science, Biology
Collections: Periodicals: Journal and Magazine Collection (Contemporary), PLoS Biology
Historic
Publication Date:
Publisher: Plos

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Schibler, U. (n.d.). Plos Biology : Recognition and Accommodation at the Androgen Receptor Coactivator Binding Interface, Volume 2. Retrieved from http://netlibrary.net/


Description
Description : Prostate cancer is a leading killer of men in the industrialized world. Underlying this disease is the aberrant action of the androgen receptor (AR). AR is distinguished from other nuclear receptors in that after hormone binding, it preferentially responds to a specialized set of coactivators bearing aromatic-rich motifs, while responding poorly to coactivators bearing the leucine-rich ‘‘NR box’’ motifs favored by other nuclear receptors. Under normal conditions, interactions with these AR-specific coactivators through aromatic-rich motifs underlie targeted gene transcription. However, during prostate cancer, abnormal association with such coactivators, as well as with coactivators containing canonical leucine-rich motifs, promotes disease progression. To understand the paradox of this unusual selectivity, we have derived a complete set of peptide motifs that interact with AR using phage display. Binding affinities were measured for a selected set of these peptides and their interactions with AR determined by X-ray crystallography. Structures of AR in complex with FxxLF, LxxLL, FxxLW, WxxLF, WxxVW, FxxFF, and FxxYF motifs reveal a changing surface of the AR coactivator binding interface that permits accommodation of both AR-specific aromatic-rich motifs and canonical leucine-rich motifs. Induced fit provides perfect mating of the motifs representing the known family of AR coactivators and suggests a framework for the design of AR coactivator antagonists.

 

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