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Latest Biomolecules Stories

2009-07-28 15:03:05

Scientists from the Universit© de Montr©al and McGill University have re-engineered a human enzyme, a protein that accelerates chemical reactions within the human body, to become highly resistant to harmful agents such as chemotherapy, according to a new study published in The Journal of Biological Chemistry."Our team modified and decoded an enzyme structure," says Joelle Pelletier, a professor at the Universit© de Montr©al's Department of Chemistry. "We discovered, to our...

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2009-07-15 09:30:00

Researchers are reporting evidence from tissue culture experiments that the popular dietary supplement carnosine may help to prevent and treat cataracts, a clouding of the lens of the eye that is a leading cause of vision loss worldwide. The study is scheduled for the July 28 edition of ACS' Biochemistry, a weekly journal.In the new study, Enrico Rizzarelli and colleagues note that the only effective treatment for cataracts is surgical replacement of the lens, the clear disc-like structure...

2009-06-10 15:12:58

U.S. scientists have discovered the structure of an unusual enzyme that can break the bond between two carbon atoms in a single step. University of Illinois researchers said their findings might help determine how bacteria develop resistance to new drugs and how to create drugs that overcome that resistance. The scientists said they have, for the first time, described the three-dimensional structure of hydroxyethylphosphonate dioxygenase and proposed a mechanism by which the enzyme causes...

2009-05-21 09:13:20

Discovery is expected to lead to biochemistry textbook changes and new approaches to protein-engineered biofuelsA Boston University"“led research team has identified the structural underpinnings of a widely-known enzyme -- acetoacetate decarboxylase (AADase) -- that was first described correctly more than 43 years ago including how it accelerates its target reaction. Until now it has never been fully explained how the reactions occur in the environment of the cell.Enzymes catalyze, or...

2009-05-19 11:40:00

Enzyme-equipped liposomes embedded in polymer capsules as a novel biomedical transport system When cells cannot carry out the tasks required of them by our bodies, the result is disease. Nanobiotechnology researchers are looking for ways to allow synthetic systems take over simple cellular activities when they are absent from the cell. This requires transport systems that can encapsulate medications and other substances and release them in a controlled fashion at the right moment. The...

2009-04-17 11:41:55

Combating several human pathogens, including some biological warfare agents, may one day become a bit easier thanks to research reported by a University of Iowa chemist and his colleagues in the April 16 issue of the journal Nature.Amnon Kohen, associate professor of chemistry in the UI College of Liberal Arts and Sciences, said that the study indicated a new mechanism by which certain organisms manufacture the DNA base thymidylate. This new mechanism is so very different from the way humans...

2009-03-13 14:34:15

Bacterial resistance to antibiotics is one of medicine's most vexing challenges. In a study described in Nature Chemical Biology, researchers from Albert Einstein College of Medicine of Yeshiva University are developing a new generation of antibiotic compounds that do not provoke bacterial resistance. The compounds work against two notorious microbes: Vibrio cholerae, which causes cholera; and E. coli 0157:H7, the food contaminant that each year in the U.S. causes approximately 110,000...

2009-02-26 08:00:00

VIENNA, Austria and CUXHAVEN, Germany, February 26 /PRNewswire/ -- EUCODIS Bioscience, a company developing proteins for the chemical industry, and Lohmann Animal Health (LAH), a company developing and marketing products for animal nutrition and animal health, today announced the achievement of a major development milestone in their collaboration agreement relating to the optimization of an undisclosed protein. EUCODIS Bioscience has completed the development of the prototype...

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2009-02-24 15:50:59

Researchers at the University of Warwick have found how a citric acid-based Achilles heel used by a pathogen that attacks the popular African Violet house plant could be exploited not just to save African Violets but also to provide a potentially effective treatment for Anthrax. The researchers examined how a chemical structure is assembled in a bacterial pathogen called Pectobacterium chrysanthemi (Dickya dadantii) that afflicts plants "“ particularly the African Violet which often...

2009-02-23 22:55:29

A team of European researchers says hair grays with age as follicles become bleached first gray, and then white, from within. The researchers closely examined cell cultures of human hair follicles and found in the absence of the enzyme catalase, the hydrogen peroxide naturally produced in hair cells stops being broken down into water and oxygen. Also, hair follicles could not repair the damage caused by the accumulating hydrogen peroxide because of low levels of enzymes MSR A and B. High...


Word of the Day
snash
  • To talk saucily.
  • Insolent, opprobrious language; impertinent abuse.
This word is Scots in origin and probably imitative.