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Latest Nitrogenase Stories

2011-11-18 03:36:07

Like a shadowy character just hidden from view, a mystery atom in the middle of a complex enzyme called nitrogenase had long hindered scientists' ability to study the enzyme fully. But now an international team of scientists led by Serena DeBeer, Cornell assistant professor of chemistry and chemical biology, has pulled back the curtain using powerful synchrotron spectroscopy and computational modeling to reveal carbon as the once-elusive atom. The research was published online Nov. 17...

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2011-01-11 10:27:56

In the vast ocean where an essential nutrient"”iron"”is scarce, a marine bacterium that launches the ocean food web survives by using a remarkable biochemical trick: It recycles iron. By day, it uses iron in enzymes for photosynthesis to make carbohydrates; then by night, it appears to reuse the same iron in different enzymes to produce organic nitrogen for proteins. The bacterium, Crocosphaera watsonii, is one of the few marine microbes that can convert nitrogen gas into organic...

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2010-12-15 08:17:39

By Diana Lutz, WUSTL The cyanobacteria are famous for releasing the oxygen that made Earth the hospitable planet we know today, but some strains also have a hidden talent for producing hydrogen gas Inside a small cabinet the size of a dorm refrigerator in one of Himadri B. Pakrasi's labs, a blue-green soup percolates in thick glass bottles under the cool light of red, blue and green LEDS. This isn't just any soup, however. It is a soup of champions. The soup is colored by a strain of...

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2010-02-16 07:56:43

Researchers report that they have discovered "“ and now know how to exploit "“ an unusual chemical reaction mechanism that allows malaria parasites and many disease-causing bacteria to survive. The research team, from the University of Illinois, also has developed the first potent inhibitor of this chemical reaction. The findings appear in the Proceedings of the National Academy of Sciences. "There is an urgent need for new drugs to combat malaria and bacterial diseases such as...


Word of the Day
bellycheer
  • Good cheer; viands.
  • To revel; to feast.
The word 'bellycheer' may come from 'belle cheer', "good cheer".
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