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This Week in Nature: May 31, 2007

A news item reports on the discovery by two different labs of microRNAs in single-celled green algae.

This paper from Peter Tessier and Susan Lindquist at the Whitehead Institute for Biomedical Research demonstrates that particular sequence elements appear necessary to switch proteins to their prion state. There's also a perspective piece on prion studies from Witold Surewicz at Case Western Reserve University.

Another paper, this one from lead authors Brian Yeh and Robert Rutigliano, explores the hypothesis that the evolution of new guanine nucleotide exchange factors provides "a mechanism for linking the core cytoskeletal machinery to a wide range of new control inputs."


The Scan

Could Cost Billions

NBC News reports that the new Alzheimer's disease drug from Biogen could cost Medicare in the US billions of dollars.

Not Quite Sent

The Biden Administration likely won't meet its goal of sending 80 million SARS-CoV-2 vaccine doses abroad by the end of the month, according to the Washington Post.

DTC Regulation Proposals

A new report calls on UK policymakers to review direct-to-consumer genetic testing regulations, the Independent reports.

PNAS Papers on Mosquito MicroRNAs, Acute Kidney Injury, Trichothiodystrophy

In PNAS this week: microRNAs involved in Aedes aegypti reproduction, proximal tubule cell response to kidney injury, and more.