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Tag: "substance" at biology news

Scientists discover how plants disarm the toxic effects of excessive sunlight

...nglet oxygen, which is a highly reactive and toxic substance that destroys biological molecules. "We've discovered a pathway that cells use to turn on certain genes and respond to singlet oxygen," says Timothy Donohue, a professor of bacteriology in the university's College of Agricultural and Life Sciences a...

Substance protects resilient staph bacteria

... catheters, artificial joints and heart valves. A substance found on the surface of Staphylococcus epidermidis has, for the first time, been shown to protect the harmful pathogen from natural human defense mechanisms that would otherwise kill the bacteria, according to scientists at the Rocky Mountain Laborat...

Sea skate experiment sheds light on human cell transport

...rchers made their discovery by using a plant-based substance to block an enzyme that causes phosphorylation. The result: The gates wouldn't open. These findings are published in the current issue of the American Journal of Physiology: Regulatory, Integrative and Comparative Physiology, along with an accompanyi...

Antibiotic Resistant Bacterium Uses Sonar-like Strategy to “See?Enemies or Prey

...s releases twosubstances into the environment. One substance sticks to foreign cells.The second substance reports back and tells the Enterococcus to makethe toxin. If no cells are in the area, the first sub...

Controversial drug shown to act on brain protein to cut alcohol use

...iathrough UCSF for medical research on alcohol and substance abuse, andby the Department of Defense....

Scientists ID molecular 'switch' in liver that triggers harmful effects of saturated and trans fats

...m of cholesterol) and triglycerides ?another fatty substance ?that are secreted into the bloodstream. PGC-1beta belongs to a specific family of co-activators, proteins that interact with other proteins to turn genes on and off and adjust their activity, like a dimmer switch that varies the brightness of a lig...

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