A transcriptional inhibitor targeted by the atypical orphan nuclear receptor SHP

A. Båvner, Lotta Johansson, Gudrun Toresson, Jan Åke Gustafsson, Eckardt Treuter

Research output: Contribution to journalArticle

56 Scopus citations

Abstract

SHP (short heterodimer partner, NROB2) is an atypical orphan member of the mammalian nuclear receptor family that consists only of a putative ligand-binding domain and thus cannot bind DNA. Instead, SHP acts as a transcriptional coregulator by inhibiting the activity of various nuclear receptors (downstream targets) via occupation of the coactivator-binding surface and active repression. However, repression mechanisms have remained elusive and may involve coinhibitory factors (upstream targets) distinct from known nuclear receptor corepressors. Here, we describe the isolation of mouse E1A-like inhibitor of differentiation 1 (EID1) as a candidate coinhibitor for SHP. We characterize the interactions between SHP and EID1 and identify two repression-defective SHP mutations that have lost the ability to bind EID1. We suggest histone acetyltransferases and histones as targets for EID1 action and propose that SHP inhibition of transcription involves EID1 antagonism of CBP/p300-dependent coactivator functions.

Original languageEnglish (US)
Pages (from-to)478-484
Number of pages7
JournalEMBO Reports
Volume3
Issue number5
DOIs
StatePublished - 2002

ASJC Scopus subject areas

  • Biochemistry
  • Molecular Biology
  • Genetics

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