A team of investigators have used differential isotope labeling and mass spectrometry to identify 55 unique in vivo sites of phosphorylation and quantitated phosphorylation for 42 different phosphopeptides in murine sperm.

The work, which could provide a basis for the development of a male contraceptive and new drug therapies, "represents the first effort to determine which specific protein phosphorylation sites change their phosphorylation status in vivo as a result of the mammalian capacitation process," the researchers said.

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Labs in the US and South Korea are hoping to bring the woolly mammoth back from beyond extinction, Newsweek writes.

Geneticist Adam Rutherford speaks with National Geographic about paleogenetics, race, and more.

Researchers link genetic links between education and smoking and longevity.

In PNAS this week: influence of gene environment interactions on polygenic traits, epigenetic features affecting fruit fly foraging, and more.