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This Week in Science

In an article published online in advance in Science this week, Emily Balskus and Christopher Walsh at Harvard Medical School describe the "genetic and molecular basis for sunscreen biosynthesis in cyanobacteria." They show that a mycosporine-like amino acid biosynthetic gene cluster generates four enzymes in vitro. "In addition to clarifying the origin of the MAAs, these efforts have revealed two unprecedented enzymatic strategies for imine formation," Balskus and Walsh write.

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The Guardian reports that the Mammalian Genetics Unit at the Harwell Institute is to close.

Scientific research itself contributes to plastic waste and isn't very sustainable, FiveThirtyEight reports.

Restaurants in the US may soon serve AquaBounty's genetically modified salmon, according to the Associated Press.

In Science this week: three studies from the Ruminant Genome Project, and more.