Search the Internet for one specific example of an enzyme found in living cells, and briefly describe its importance: where is it found and what reaction does it facilitate?
On my search for enzymes, I ran across a class of enzymes called sirtuins. These are enzymes found in prokaryotes and eukaryotes. These enzymes affect cellular membranes. One specific enzyme in this class is the sir2 enzyme. It is found in yeast, roundworms, and fruitflies. These enzymes are believe to be able to control aging. Basically, overexpression of this enzyme, sir2, would increase the lifespan of the cell about 30%.
There have been sucessful experiment conducted that prove this to be accurate with yeast, roundworms, and fruitflys. Currently, experiments are being conducted on mice to see if this reaction still hold true.
For more information search for Sir2 on wikipedia.
-Billy
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