Nuclear Receptor Coactivator ACTR Is a Novel Histone Acetyltransferase and Forms a Multimeric Activation Complex With P/CAF and CBP/p300

Cell. 1997 Aug 8;90(3):569-80. doi: 10.1016/s0092-8674(00)80516-4.

Abstract

We report here the identification of a novel cofactor, ACTR, that directly binds nuclear receptors and stimulates their transcriptional activities in a hormone-dependent fashion. ACTR also recruits two other nuclear factors, CBP and P/CAF, and thus plays a central role in creating a multisubunit coactivator complex. In addition, and unexpectedly, we show that purified ACTR is a potent histone acetyltransferase and appears to define a distinct evolutionary branch to this recently described family. Thus, hormonal activation by nuclear receptors involves the mutual recruitment of at least three classes of histone acetyltransferases that may act cooperatively as an enzymatic unit to reverse the effects of histone deacetylase shown to be part of the nuclear receptor corepressor complex.

Publication types

  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, P.H.S.

MeSH terms

  • Acetyltransferases / chemistry
  • Acetyltransferases / isolation & purification
  • Acetyltransferases / metabolism*
  • Amino Acid Sequence
  • Animals
  • CREB-Binding Protein
  • Cell Cycle Proteins / chemistry
  • Cell Cycle Proteins / isolation & purification
  • Cell Cycle Proteins / metabolism*
  • Cloning, Molecular
  • Histone Acetyltransferases
  • Humans
  • Lung Neoplasms
  • Macromolecular Substances
  • Mammals
  • Molecular Sequence Data
  • Nuclear Proteins / chemistry
  • Nuclear Proteins / isolation & purification
  • Nuclear Proteins / metabolism*
  • Protein Binding
  • Receptors, Cytoplasmic and Nuclear / metabolism*
  • Receptors, Retinoic Acid / metabolism
  • Recombinant Proteins / metabolism
  • Saccharomyces cerevisiae
  • Saccharomyces cerevisiae Proteins*
  • Trans-Activators*
  • Transcription Factors / chemistry
  • Transcription Factors / isolation & purification
  • Transcription Factors / metabolism*
  • Transcription, Genetic
  • Transcriptional Activation
  • Transfection
  • Tumor Cells, Cultured
  • p300-CBP Transcription Factors

Substances

  • Cell Cycle Proteins
  • Macromolecular Substances
  • Nuclear Proteins
  • Receptors, Cytoplasmic and Nuclear
  • Receptors, Retinoic Acid
  • Recombinant Proteins
  • Saccharomyces cerevisiae Proteins
  • Trans-Activators
  • Transcription Factors
  • Acetyltransferases
  • CREB-Binding Protein
  • CREBBP protein, human
  • Histone Acetyltransferases
  • p300-CBP Transcription Factors
  • p300-CBP-associated factor

Associated data

  • GENBANK/AF036892