SCIENCE NEWS ONLINE

Bringing Proteins into the Fold

September 6, 1997 | Volume 152 | Number 10

Cover: A new picture -- at atomic resolution -- provides insight into how two molecular chaperones help proteins fold. The snapshot reveals that, upon capturing a protein, the molecules twist dramatically and completely renovate the chemical environment in which the protein resides. (Image Zhaohui Xu)

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News of the Week:

Exotic Needle Found in Particle Haystack

Physicists have uncovered evidence of a rare particle known as an exotic meson.



Dead whales tell tales of sea ice decline

Whaling records indicate a dramatic loss during the 1950s of sea ice surrounding Antarctica.



Unraveling a fish killer's toxic ways

Two of the potent toxins produced by the fish-killing Pfiesteria piscicida from estuaries along the Atlantic coast have been isolated.



Caries: Legacy of mom's lead exposure?

A child's susceptibility to cavities may reflect lead exposure in the womb and through breast milk.



Spacecraft probes beneath sun's surface

New findings from the SOHO spacecraft show that the sun's interior has several intriguing zones of gas that move at different speeds.



Trapping tiny particles electrostatically

A tiny device acting like a pair of pincers traps palladium atom clusters only nanometers in diameter.



Polluted blood fails to deliver infection

To travel from the gut to the brain, the infectious agents that cause mad cow disease and related illnesses must follow a specific set of steps.



New tools for muscular dystrophy research

A novel analysis technique finds that more transplanted healthy muscle cells survive in muscular dystrophy patients than previously thought.




Research Notes:

Behavior

Danger decrees get confidence boost

When mental health clinicians report high confidence in their assessments, their accuracy in estimating patients' risks of becoming violent goes up dramatically.



Women mop up after heart attacks

Married women who survive a heart attack quickly return to a full load of household activities that may undermine their recovery.



Biomedicine

New drugs help angioplasty patients

The drugs abciximab and probucol helps keep arteries open after balloon angioplasty.



Antibiotic resistance falls in Finland

A Finnish effort to limit bacterial resistance bears fruit.




Articles:

A Silent Cool

Thermoelectrics may offer new ways to refrigerate and generate power

Scientists have renewed their interest in materials that change temperature with the application of electric current.



How Proteins Take Shape

Guardians give a new twist to protein folding

X-ray images provide insights into how molecules called chaperones help proteins fold into the correct shape.



Proton-Go-Round

Whence does the proton get its spin?

A proton's constituent quarks contribute only about 30 percent of the particle's spin, leaving open the question of how the remainder arises.




 

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