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Using Particles to Picture Proteins
The workhorse for solving the structures of biological molecules
is x-ray crystallography, but some proteins can't be crystallized.
Enter single-particle electron cryomicroscopy, a technique that
uses images of randomly oriented molecules, frozen in solution,
to construct a 3-D model in the computer — crystallization
in silico. |
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AIDS Help From the South Pacific
Long used by Samoan healers, the mamala tree was saved from
extinction to become a potent AIDS fighter. Now an agreement
with the government of Samoa will help see to it that the mamala's
powerful medicine is manufactured synthetically, with half
the proceeds going to the Samoan people. |
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How Quark Matter Freezes
Pondering the interiors of neutron stars, a nuclear scientist
stumbled upon a startling hypothesis about how
quark matter freezes. While theorists debate, astronomers
gather more clues as to how the densest matter in the universe
arranges itself. |
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