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Interphase movements of a DNA chromosome region modulated by VP16 transcriptional activator.

Domenii publicaţii > Biologie + Tipuri publicaţii > Articol în revistã ştiinţificã

Autori: Tumbar T, Belmont AS.

Editorial: Nat Cell Bio, 2(12), p.871-8, 2001.

Rezumat:

We examined changes in intranuclear chromosome positioning induced by a transcriptional activator in a simple experimental system. Targeting the VP16 acidic activation domain (AAD) to an engineered chromosome site resulted in its transcriptional activation and redistribution from a predominantly peripheral to a more interior nuclear localization. Direct visualization in vivo revealed that the chromosome site normally moves into the nuclear interior transiently in early G1 and again in early S phase. In contrast, VP16 AAD targeting induced this site’s permanent interior localization in early G1. A single transcriptional activator therefore can modify the cell-cycle-dependent programme of intranuclear positioning of chromosome loci.

Cuvinte cheie: chromatin, nuclear migration