Format

Send to

Choose Destination
See comment in PubMed Commons below
Nature. 2002 Jan 31;415(6871):549-53.

Mutual synergistic folding in recruitment of CBP/p300 by p160 nuclear receptor coactivators.

Author information

1
Department of Molecular Biology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, USA.

Abstract

Nuclear hormone receptors are ligand-activated transcription factors that regulate the expression of genes that are essential for development, reproduction and homeostasis. The hormone response is mediated through recruitment of p160 receptor coactivators and the general transcriptional coactivator CBP/p300, which function synergistically to activate transcription. These coactivators exhibit intrinsic histone acetyltransferase activity, function in the remodelling of chromatin, and facilitate the recruitment of RNA polymerase II and the basal transcription machinery. The activities of the p160 coactivators are dependent on CBP. Both coactivators are essential for proper cell-cycle control, differentiation and apoptosis, and are implicated in cancer and other diseases. To elucidate the molecular basis of assembling the multiprotein activation complex, we undertook a structural and thermodynamic analysis of the interaction domains of CBP and the activator for thyroid hormone and retinoid receptors. Here we show that although the isolated domains are intrinsically disordered, they combine with high affinity to form a cooperatively folded helical heterodimer. Our study uncovers a unique mechanism, called 'synergistic folding', through which p160 coactivators recruit CBP/p300 to allow transmission of the hormonal signal to the transcriptional machinery.

PMID:
11823864
DOI:
10.1038/415549a
[Indexed for MEDLINE]
PubMed Commons home

PubMed Commons

0 comments
How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for Nature Publishing Group
    Loading ...
    Support Center