✦ LIBER ✦

Specifying Epigenetic States with Autoregulatory Transcription Factors

✍ Scribed by Andrew D. Keller

Book ID: 102612598
Publisher: Elsevier Science
Year: 1994
Tongue: English
Weight: 314 KB
Volume: 170
Category: Article
ISSN: 0022-5193
DOI: 10.1006/jtbi.1994.1177

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✦ Synopsis

Epigenetic information, not DNA sequence, distinguishes different cell types within a multicellular organism. The molecular nature of epigenetic information specifying differentiated cell types is unknown. However, it must be stable over time and mitotically heritable. In this paper, steady-state levels of autoregulatory transcription factors are explored as a potential form of epigenetic information. In particular, a model autoregulatory transcription factor having two alternative stable steady-state levels is presented. Each steady-state level specifies a phenotypically distinguishable epigenetic state, analogous to a differentiated cell type. These states are mitotically stable if the transcription factor is inherited during cell division.

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