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Bioessays. 1998 Nov;20(11):879-83.

Role of the telomeric DNA-binding protein TRF2 in the stability of human chromosome ends.

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1
Laboratoire de Biologie Moléculaire et Cellulaire, Ecole Normale Supérieure de Lyon, UMR49 CNRS/ENS, France.

Abstract

A major issue in telomere research is to understand how the integrity of chromosome ends is preserved. A recent study shows that expression of a dominant-negative form of the human telomeric protein TRF2 increases the number of chromosome fusions in immortalized cells and decreases the quantity of G-rich telomeric DNA 3' overhang, the G tail. Consequently, TRF2 appears to control the structure of the very end of the chromosomal DNA molecule and to prevent recombination between two telomeres. Remarkably, the same study reveals a potential role of TRF2 in cell division control.

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