The changing faces of HP1: From heterochromatin formation and gene silencing to euchromatic gene expression: HP1 acts as a positive regulator of transcription

So Hee Kwon, Jerry L. Workman

Research output: Contribution to journalReview article

95 Citations (Scopus)

Abstract

Heterochromatin protein 1 (HP1) is a positive regulator of active transcription in euchromatin. HP1 was first identified in Drosophila melanogaster as a major component of heterochromatin. Most eukaryotes have at least three isoforms of HP1, which are conserved in overall structure but localize differentially to heterochromatin and euchromatin. Although initial studies revealed a key role for HP1 in heterochromatin formation and gene silencing, recent progress has shed light on additional roles for HP1 in processes such as euchromatic gene expression. Recent studies have highlighted the importance of HP1-mediated gene regulation in euchromatin. Here, we focus on recent advances in understanding the role of HP1 in active transcription in euchromatin and how modification and localization of HP1 can regulate distinct functions for this protein in different contexts.

Original languageEnglish
Pages (from-to)280-289
Number of pages10
JournalBioEssays
Volume33
Issue number4
DOIs
Publication statusPublished - 2011 Apr 1

Fingerprint

Heterochromatin
Gene Silencing
Transcription
Gene expression
Genes
Euchromatin
Gene Expression
heterochromatin-specific nonhistone chromosomal protein HP-1
Eukaryota
Drosophila melanogaster
Protein Isoforms

All Science Journal Classification (ASJC) codes

  • Biochemistry, Genetics and Molecular Biology(all)

Cite this

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The changing faces of HP1 : From heterochromatin formation and gene silencing to euchromatic gene expression: HP1 acts as a positive regulator of transcription. / Kwon, So Hee; Workman, Jerry L.

In: BioEssays, Vol. 33, No. 4, 01.04.2011, p. 280-289.

Research output: Contribution to journalReview article

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