Critical Reviews™ in Eukaryotic Gene Expression

ISSN for PRINT: 1045-4403

For Online Access

Best Paper Award Selection - Editorial Board Site

2006, Volume16

Issue 2

94 pages

Issue price - $169.00

Zhou Songyang
Verna and Marrs Mclean Department of Biochemistry and Molecular Biology, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030

Dan Liu
Verna and Marrs Mclean Department of Biochemistry and Molecular Biology, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030

Work in model organisms, such as mouse, yeast, Tetrahymena, ciliates, and plants, has led to a deeper understanding of telomere biology. Telomeres together with telomere-binding proteins have evolved to protect chromosomal ends and maintain chromosomal length and integrity. Over the last two decades, biochemical, molecular, cellular, and genetic studies have greatly enhanced our knowledge of the unique function and structure of telomeres and telomere-associated factors. In this review, we focus on the important advances, in terms of our knowledge and the methods used, in understanding mammalian telomere regulation by telomeric proteins. Recently, the 6 telomeric proteins ( TRF1, TRF2, POT1, TIN2, RAP1, and TPP1) were found to form a high-order complex. This complex and its associated partners provide the basis for constructing an interaction map of telomere regulators in mammalian cells, which we named the Telomere Interactome. The Telomere Interactome incorporates the various telomere signaling pathways and represents the molecular machinery that regulates mammalian telomeres. The establishment of the Telomere Interactome will also enable the integration of the intricate circuitries that regulate telomeres with other cellular interactomes in vertebrates.

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