Related topics: chromosomes

Protein lifetime and the stability of cell structures

(Phys.org) —The ability of a cell to move, replicate, and recast itself according to the needs of the organism which it serves, comes at it price. The extreme flexibility of cells takes its origin from the constant turnover ...

Mothers ensure their offspring's success through epigenetics

Parents pass genes along to their offspring traits that equip them for life. In recent years, research has shown that the reality is much more complex and that parents endow much more than just genes. A new study in Cell ...

Origins of DNA folding suggested in archaea

In the cells of palm trees, humans, and some single-celled microorganisms, DNA gets bent the same way. Now, by studying the 3-D structure of proteins bound to DNA in microbes called Archaea, University of Colorado Boulder ...

Control of gene expression: Histone occupancy in your genome

When stretched out, the genome of a single human cell can reach six feet. To package it all into a tiny nucleus, the DNA strand is tightly wrapped around a core of histone proteins in repeating units—each unit known ...

DNA 'spool' modification affects aging and longevity

Research on a modified protein around which DNA is wrapped sheds light on how gene regulation is linked to aging and longevity in nematodes, fruit flies and possibly humans.

Scientists image molecules vital for gene regulation

All the trillions of cells in our body share the same genetic information and are derived from a single, fertilized egg. When this initial cell multiplies during fetal development, its daughter cells become more and more ...

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