Word: proteins
(lookup in dictionary)
(lookup stats)
Dates: all
Sort By: most recent first
(reverse)
...Harvard sophomore is spending the month at Cape Canaveral, Fla., making last-minute adjustments to a protein crystal growth experiment to be launched on the space shuttle Endeavor, scheduled for liftoff perhaps as early as the end of August...
...Proteins are essential to all life processes, and scientists need to understand how protein molecules are constructed at the molecular level, Thiessen wrote in a press release. Growing the proteins in crystal from will allow scientists to study protein structure more easily...
...Growing these high-quality protein crystals has traditionally been difficult for researchers here on Earth because of many undesirable effects caused by gravity," he said...
...injecting leptin into obese mice, three separate teams of researchers, including Friedman's, have confirmed that this protein is indeed the blood factor that makes fat mice thin. But they are still trying to puzzle out just how it works. Friedman, for one, believes leptin is almost certainly a hormone that travels through the bloodstream to act on the brain. In fact, it appears leptin may act in a feedback loop like the temperature sensor in a thermostat--or in this case a "fatstat"--to tell the body whether to turn metabolism and appetite up or down. Thus when leptin...
...more leptin. As a result, their appetites slacken and their energy consumption speeds up. But the obese mice cannot produce leptin, so their brains never receive this vital message. "These animals," marvels Friedman, "get fat because they think they're starving, and then when we give them the protein, they get thin because they think they...