Scientists map the portal to the cell's nucleus

Like an island nation, the nucleus of a cell has a transportation problem. Evolution has enclosed it with a double membrane, the nuclear envelope, which protects DNA but also cuts it off from the rest of the cell. Nature's ...

Building the machinery that makes proteins

All of the proteins necessary for life are made by giant molecular machines called ribosomes. A ribosome, in turn, is built from proteins and ribosomal RNAs stitched together with immaculate precision.

Scientists shed light on biological roots of individuality

Put 50 newborn worms in 50 separate containers, and they'll all start looking for food at roughly the same time. Like members of other species, microscopic C. elegans roundworms tend to act like other individuals their own ...

Mosquito sex protein could provide key to controlling disease

If you thought the sex lives of humans were complicated, consider the case of the female Aedes aegypti mosquito, bringer of Zika, dengue, and yellow fever: She mates but once, in seconds and on the wing, with one lucky male; ...

In the fight against viral infection, spelling counts

For millions of years, humans and viruses have engaged in a constant tug of war: as our cells evolve new ways to defend us from our viral enemies, these pathogens in turn acquire new traits to sidestep those defenses.

Targeting a single protein might treat a broad range of viruses

Most drugs that fight viruses are designed to target individual pathogens. But scientists at The Rockefeller University have identified a protein that a broad range of viruses require to spread within a host—a discovery ...

Alternative CRISPR system is less specific, more robust

The genetic tool adept at line-by-line gene editing, CRISPR, has revolutionized the ability of scientists to manipulate genes for experimental, and perhaps someday therapeutic, purposes. But it comes in several varieties. ...

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