Protein caught in the act

Researchers have developed a new way to see where the molecules are active

Researchers have illuminated a once-hidden developmental process. A fluorescent signal pinpoints the activity of a protein in fruit flies, allowing researchers to see exactly when and where this protein does its job.

PROTEIN ILLUMINATED. A bioprobe to lights up the activity of a Cdc42 protein in the nervous system of a developing fruit fly embryo.