Previous Article | Next Article ![]()
Molecular and Cellular Biology, August 2001, p. 5312-5320, Vol. 21, No. 16
Laboratoire Oncogenèse,
Différenciation et Transduction du Signal, CNRS UPR 9079, Institut André Lwoff, Villejuif,
France,1 and Department of Biochemistry,
Technion-Israel Institute of Technology, Haïfa 31096, Israel2
Received 13 December 2000/Returned for modification 22 January
2001/Accepted 7 May 2001
Acetylation is emerging as a posttranslational modification of
nuclear proteins that is essential to the regulation of transcription and that modifies transcription factor affinity for binding sites on
DNA, stability, and/or nuclear localization. Here, we present both in
vitro and in vivo evidence that acetylation increases the affinity of
myogenic factor MyoD for acetyltransferases CBP and p300. In
myogenic cells, the fraction of endogenous MyoD that is acetylated was
found associated with CBP or p300. In vitro, the interaction between
MyoD and CBP was more resistant to high salt concentrations and was
detected with lower doses of MyoD when MyoD was acetylated.
Interestingly, an analysis of CBP mutants revealed that the interaction
with acetylated MyoD involves the bromodomain of CBP. In live cells,
MyoD mutants that cannot be acetylated did not associate with CBP or
p300 and were strongly impaired in their ability to cooperate with CBP
for transcriptional activation of a muscle creatine kinase-luciferase
construct. Taken together, our data suggest a new mechanism for
activation of protein function by acetylation and demonstrate for the
first time an acetylation-dependent interaction between the bromodomain
of CBP and a nonhistone protein.
0270-7306/01/$04.00+0 DOI: 10.1128/MCB.21.16.5312-5320.2001
Copyright © 2001, American Society for Microbiology. All rights reserved.
Interaction between Acetylated MyoD and the
Bromodomain of CBP and/or p300
*
Corresponding author. Mailing address: Laboratoire
Oncogenèse, Différenciation et Transduction du Signal, CNRS
UPR 9079, Institut André Lwoff, 7 rue Guy Moquet, Villejuif,
France. Phone: 33-(0)1-49 58 33 85. Fax: 33-(0)1-49 58 33 07. E-mail:
ahbellan{at}vjf.cnrs.fr.
This article has been cited by other articles:
| J. Bacteriol. | J. Virol. | Eukaryot. Cell |
|---|
| Microbiol. Mol. Biol. Rev. | Clin. Vaccine Immunol. | All ASM Journals |
|---|