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Latest Process chemicals Stories

2008-09-11 15:00:11

Marauding molecules cause the tissue damage that underlies heart attacks, sunburn, Alzheimer's and hangovers. But scientists at the Stanford University School of Medicine say they may have found ways to combat the carnage after discovering an important cog in the body's molecular detoxification machinery. The culprit molecules are oxygen byproducts called free radicals. These highly unstable molecules start chain reactions of cellular damage -- an escalating storm that ravages healthy...

2008-07-25 03:00:40

By Kubiak, Karina Nowak, Wieslaw ABSTRACT Nitrile hydratase (NHase) is an enzyme used in the industrial biotechnological production of acrylamide. The active site, which contains nonheme iron or noncorrin cobalt, is buried in the protein core at the interface of two domains, alpha and beta. Hydrogen bonds between betaArg-56 and alphaCys-114 sulfenic acid (alphaCEA114) are important to maintain the enzymatic activity. The enzyme may be inactivated by endogenous nitric oxide (NO) and...

2008-07-13 21:00:22

By Rajen M. YOUR genes are you. Your destiny is coded in them. So is your health and longevity. Can you change the genetic code and hence change your life? It is the nature versus nurture debate that has been going on all our lives. Still, we have long suspected that food affects your genes. We have also seen the effects of bad food. It can cause the wrong genes to get turned on. Hence, avoid chemicals and overly cooked and grilled meats. But good food like vegetables and fruits can...

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2008-06-04 13:10:00

As the cost of sequencing a single human genome drops rapidly, with one company predicting a price of $100 per person in five years, soon the only reason not to look at your "personal genome" will be fear of what bad news lies in your genes.University of California, Berkeley scientists, however, have found a welcome reason to delve into your genetic heritage: to find the slight genetic flaws that can be fixed with remedies as simple as vitamin or mineral supplements."I'm looking for the good...

2007-10-02 09:01:01

By Zhang, Lei Wang, Zinan; Xia, Yang; Kai, Guoyin; Et al ABSTRACT Vitamin C (L-ascorbic acid; AsA) is the major soluble antioxidant found in plants and is also an essential component of human nutrition. Although numerous biotechnological methods have been exploited to increase its yield, pressures such as commercial competition and environmental concerns make it urgent to find a new way for industrial production of plant-derived AsA. Engineering plant AsA has now become feasible because of...

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2006-02-23 12:45:00

One day, humans will step foot on Mars. And they'll be hungry. Growing food on a frozen desert planet with a suffocatingly thin atmosphere, however, will be a challenge. Scientists are now bioengineering plants that can grow on mars. NASA -- Plants and animals are fragile life forms. Dry them out, freeze them, expose them to high doses of radiation - they don't do so well. But not all organisms are so picky. Many archaeans, for example, are distinguished by their ability to adapt to a...

2005-06-15 21:34:38

La Jolla, Calif.- Nature is a seemingly endless storehouse of interesting - and potentially life-saving - biological molecules. But tracking down and harvesting those chemicals in their natural form can be time-consuming, expensive and unreliable. Now Salk scientists have discovered a new way of bringing "bio-prospecting" out of the rainforest and into the lab. Their findings are published in the June 16th edition of the journal Nature. St©phane Richard, Joseph Noel and Tomohisa...