Article

Chromosome Research

, Volume 14, Issue 1, pp 107-116

First online:

Chromatin dynamics and the evolution of alternate promoter states

  • Gordon L. HagerAffiliated withLaboratory of Receptor Biology and Gene Expression, Center for Cancer Research, National Cancer Institute, NIH Email author 
  • , Cem ElbiAffiliated withLaboratory of Receptor Biology and Gene Expression, Center for Cancer Research, National Cancer Institute, NIH
  • , Thomas A. JohnsonAffiliated withLaboratory of Receptor Biology and Gene Expression, Center for Cancer Research, National Cancer Institute, NIH
  • , Ty VossAffiliated withLaboratory of Receptor Biology and Gene Expression, Center for Cancer Research, National Cancer Institute, NIH
  • , Akhilesh K. NagaichAffiliated withLaboratory of Receptor Biology and Gene Expression, Center for Cancer Research, National Cancer Institute, NIH
  • , R. Louis SchiltzAffiliated withLaboratory of Receptor Biology and Gene Expression, Center for Cancer Research, National Cancer Institute, NIH
  • , Yi QiuAffiliated withLaboratory of Receptor Biology and Gene Expression, Center for Cancer Research, National Cancer Institute, NIH
  • , Sam JohnAffiliated withLaboratory of Receptor Biology and Gene Expression, Center for Cancer Research, National Cancer Institute, NIH

Rent the article at a discount

Rent now

* Final gross prices may vary according to local VAT.

Get Access

Abstract

Eucaryotic gene transcriptional switches utilize changes both in the activity and composition of soluble transcription factor complexes, and epigenetic modifications to the chromatin template. Until recently, alternate states of promoter activity have been associated with the assembly of relatively stable multiprotein complexes on target genes, with transitions in the composition of these complexes occurring on the time scale of minutes or hours. The development of living cell techniques to characterize transcription factor function in real time has led to an alternate view of highly dynamic protein/template interactions. In addition, emerging evidence suggests that energy-dependent processes contribute significantly to the rapid movement of proteins in living cells, and to the exchange of sequence-specific DNA-binding proteins with regulatory elements. Potential mechanisms involved in the unexpectedly rapid flux of factor/template interactions are discussed in the context of a “return-to-template” model for transcription factor function.

Key words

chromatin DNA methylation gene expression promoter transcription