23 October 2007
Vol 2007, Issue 409
  • Contents

    • Review

    • Editors' Choice

      • Unraveling Ras Interactions

        A model of cell signaling reveals why only one mutated form of an oncogene occurs in tumors and suggests a strategy for selective inhibition of oncogene-containing cells.

      • Lock and Load

        Helicobacter pylori engages and activates integrins on gastric epithelial cells before injecting virulence factors.

      • Interferon’s New Weapon

        Interferon increases the abundance of microRNAs that inhibit replication of the hepatitis C virus.

      • Clocks in the Corals

        Primitive photoreceptors in a reef-building coral respond to subtle changes in light, suggesting that they help trigger the mass spawning of corals on the Great Barrier Reef.

      • Off with the Methyl Marks

        An enzyme is discovered that removes methyl groups from arginines in histone proteins, which together with DNA form the bulk of chromatin and help regulate gene expression.

About The Cover

Cover image expansion

COVER This week features a Review concerning the possible role of asparagine deamidation as a genetically programmed molecular timer of biological processes. [Image: Christopher Bickel, AAAS]