29 July 2008
Vol 1, Issue 30
  • Contents

    • Perspective

    • Editors' Choice

      • Against the CLOCK

        SIRT1, an NAD+-dependent histone deacetylase, balances the histone acetyltransferase activity of CLOCK in the control of circadian rhythms.

      • Switching from Blue to Green

        Terminally differentiated neurons switch from sensing blue light to green light during metamorphosis of the fly larval eye into the adult eyelet, an organ involved in circadian timing.

      • Why Aging Muscles Don't Repair

        Less Notch antagonism of transforming growth factor-β-mediated Smad3 signaling prevents muscle stem cells from repairing injury in old muscles.

      • Brassinosteroid Signaling

        When a plant membrane receptor is activated by a steroid hormone, two kinases are phosphorylated that ultimately regulate gene expression and development.

About The Cover

Cover image expansion

COVER This week's issue contains new entries to the ST NetWatch section. WormBook is a collection of reviews about the biology of the nematode Caenorhabditis elegans (seen in the image). [Image: National Human Genome Research Institute]