A Quote by Frances Arnold

Microbes such as bacteria and yeast use enzymes to make fuels from biomass. We use directed evolution to perfect those enzymes and make new fuels efficiently. — © Frances Arnold
Microbes such as bacteria and yeast use enzymes to make fuels from biomass. We use directed evolution to perfect those enzymes and make new fuels efficiently.
My laboratory uses evolution to design new enzymes. No one really knows how to design them - they are tremendously complicated. But we are learning how to use evolution to make new ones, just as nature does.
And in the process, we have come up with fuels - algae-based fuels, isobutanol-based fuels and other fuels - that we think will power the planes in the future so that, you know, by 2020 I hope that our planes will be powered on fuels that are clean fuels and are not polluting the environment so that we'll have a green airline and an airline that actually has fuels that will be hopefully cheaper than the dirty fuels of the past. So [we're] doing good and also turning a profit at the same time.
[G]enes make enzymes, and enzymes control the rates of chemical processes. Genes do not make "novelty seeking" or any other complex and overt behavior. Predisposition via a long chain of complex chemical reactions, mediated through a more complex series of life's circumstances, does not equal identification or even causation.
There are enzymes called restriction enzymes that actually digest DNA.
The body cannot produce enzymes in perfect combinations to metabolize your foods as completely as the food enzymes created by nature do. This results in partially digested fats, proteins, and starches that can clog your body's intestinal tract and arteries.
All these bacteria that coat our skin and live in our intestines, they fend off bad bacteria. They protect us. And you can't even digest your food without the bacteria that are in your gut. They have enzymes and proteins that allow you to metabolize foods you eat.
It seems now clear that a belief in the functional importance of all enzymes found in bacteria is possible only to those richly endowed with Faith.
Enzymes - plainly the most important biotechnology of our era - already permeate many industrial processes. Unlike fossil fuels, they carry chemical programming which drives complex reactions, are renewable, and work at ordinary pressures and temperatures.
Most people don't realize it, because they're invisible, but microbes make up about a half of the Earth's biomass, whereas all animals only make up about one one-thousandth of all the biomass.
Well, we can study aging in people, but of course those studies take decades. So what we try to do is we use simpler organisms to try and understand the basic mechanisms and so in my laboratory, for example, we use things like simple baker's yeast that we use to make bread.
Enzymes catalyze all the reactions of life. They're what allow you to extract materials and energy from your environment and turn that into muscle and tissue and fat. That's all done by enzymes. They're pretty remarkable chemists - they're even better than Caltech chemists.
Printing novel DNA might open the way to achievements once only conceivable in science fiction: designer bacteria that can produce new chemicals, such as more efficient fuels, or synthetic versions of our cells that make us resistant to the effects of radiation.
We should certainly not be perpetuating further harm to others or to the environment. Suppose that workers at ExxonMobil are trying to unionize. We have two choices: to help them improve their lives, or to keep away so that their lives will be worse. Neither choice has any effect on use of fossil fuels. So radical organizers can both help them unionize and improve their lives, and convince them to find a different way to survive and work for ending the use of fossil fuels.
Nuclear DNA encodes all the proteins and enzymes that make you you, basically.
The issue of climate change is one that we ignore at our own peril. There may still be disputes about exactly how much we're contributing to the warming of the earth's atmosphere and how much is naturally occurring, but what we can be scientifically certain of is that our continued use of fossil fuels is pushing us to a point of no return. And unless we free ourselves from a dependence on these fossil fuels and chart a new course on energy in this country, we are condemning future generations to global catastrophe.
Using the power of protein engineering and evolution, we can convince enzymes to take what they do poorly and do it really well.
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