Polycomb and Trithorax Group Proteins Mediate the Function of a Chromatin Insulator

  title={Polycomb and Trithorax Group Proteins Mediate the Function of a Chromatin Insulator},
  author={T. Gerasimova and V. Corces},
  • T. Gerasimova, V. Corces
  • Published 1998
  • Medicine, Biology
  • Cell
  • Chromatin boundaries or insulator elements affect the interaction between enhancers and promoters. The gypsy insulator contains two proteins, Su(Hw) and Mod(mdg4). Both proteins colocalize on several hundred sites on polytene chromosomes and are distributed in a punctated pattern in the nuclear matrix. Mutations in mod(mdg4) have properties characteristic of a trxG gene. In addition, mutations in trxG genes enhance insulator effects on adjacent enhancers, whereas mutations in Pc have the… CONTINUE READING
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