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Funding: This work was supported by the Chief Scientist's Office (CSO) of the Scottish Government (http://www.cso.scot.nhs.uk/): CWH (CZB-4-477) and IH (ETM/382). ; Peer reviewed ; Publisher PDF

Open Access This article is distributed under the terms of the Creative Commons Attribution License which permits any use, distribution, and reproduction in any medium, provided the original author(s) and the source are credited. Acknowledgements This work was supported by funding from the Chief Scientist Office, Government of Scotland (Grant Nos CZB/4/477 and ETM/258). DNL was supported by the Association for International Cancer Research (Grant No. 03–127) ; Peer reviewed ; Publisher PDF

The androgen receptor is a transcription factor that plays a key role in the development of prostate cancer, and its interactions with general transcription regulators are therefore of potential therapeutic interest. The mechanistic basis of these interactions is poorly understood due to the intrinsically disordered nature of the transactivation domain of the androgen receptor and the generally transient nature of the protein-protein interactions that trigger transcription. Here, we identify a motif of the transactivation domain that contributes to transcriptional activity by recruiting the C-terminal domain of subunit 1 of the general transcription regulator TFIIF. These findings provide molecular insights into the regulation of androgen receptor function and suggest strategies for treating castration-resistant prostate cancer. ; This work was supported by IRB, ICREA (X.S.), Obra Social "la Caixa" (E.D.M., E.S., and X.S.), MINECO (BIO2012-31043 and BIO2015-70092-R to X.S., BIO2014-53095-P to G.D.F.), Marató de TV3 (102030 to X.S. and 102031 to E.E.-P), the COFUND program of the European Commission (C.D.S.), the European Research Council (CONCERT, contract number 648201 to X.S.), the Ramón y Cajal program of MICINN (RYC-2011-07873 to C.W.B.), the Serra Hunter Program (E.E.-P.), AGAUR (SGR-2014-56RR14 to E.E.-P), and FEDER (G.D.F.). I.H. was supported by funding from the Chief Scientist's Office of the Scottish Government (ETM-258, ETM-382). IRB Barcelona is the recipient of a Severo Ochoa Award of Excellence from MINECO (Government of Spain).