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In Nature this week, scientists led by HHMI's Raymond Deshaies describe the polyubiquitylation pathway, which is the conjugation of a series of ubiquitin molecules onto proteins as part of the degradation process. By employing "new theoretical and experimental methodologies," they were able to watch the process in milliseconds, and found that it actually proceeds sequentially.

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The US Food and Drug Administration is to announce stricter standards for emergency authorizations of SARS-CoV-2 vaccines, reports the Washington Post.

The Associated Press reports Johnson & Johnson is starting a late-stage clinical trial of its candidate SARS-CoV-2 vaccine.

Bloomberg reports the budget of Operation Warp Speed is actually $18 billion, higher than the number typically cited.

In Genome Research this week: genomic analysis reveals role of super-spreaders in SARS-CoV-2, epigenetic drivers of cancer, and more.