In a recent study out of the Molecular Sciences Institute, researchers led by Richard Yu have found that cell signaling systems can be described in a quantitative way, just like electrical circuits. In work recently published in Nature, Yu used genetic reporters — mostly fluorescently tagged proteins — to find that the mitogen-activated -protein kinase Fus3 provides negative feedback to the S. cerevisiae pheromone response pathway. It does that by adjusting the dose-response alignment to match receptor-ligand binding to downstream output.

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Dog DNA testing finds that some purebreds might not truly be purebreds, Inside Edition reports.

Mary Beckerle has returned as director of the Huntsman Cancer Institute, according to ScienceInsider.

Smithsonian Magazine reports that environmental DNA sampling can be used to track elusive organisms.

In Genome Research this week: repetitive satellite DNA in the fruit fly, transcriptome map assembly pipeline, and more.