tDNA insulators and the emerging role of TFIIIC in genome organization

Kevin Van Bortle, Victor G. Corces

Research output: Contribution to journalReview articlepeer-review


Recent findings provide evidence that tDNAs function as chromatin insulators from yeast to humans. TFIIIC, a transcription factor that interacts with the B-box in tNAs as well as thousands of ETC sites in the genome, is responsible for insulator function. Though tDNAs are capable of enhancer-blocking and barrier activities for which insulators are defined, new insights into the relationship between insulators and chromatin structure suggest that TFIIIC serves a complex role in genome organization. We review the role of tRNA genes and TFIIIC as chromatin insulators, and highlight recent findings that have broadened our understanding of insulators in genome biology.

Original languageEnglish (US)
Issue number6
StatePublished - 2012
Externally publishedYes


  • Chromatin
  • CTCF
  • Epigenetics
  • ETC loci
  • tRNA genes

ASJC Scopus subject areas

  • Biotechnology
  • Biochemistry
  • Genetics


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