2Alecture+8

to emphasize the rare useful reactions and avoid

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Unformatted text preview: eaction we’ve discussed has an enzyme … Why does life use a catalyst for every reaction? Why does life use a catalyst for every reaction? a)  b)  c)  d)  e)  f)  To make it go faster. To emphasize the rare useful reactions and avoid toxic alternatives. To tune pathways so rates are compatible. To optimize rates for ambient conditions. To allow it to specialize on a lifestyle distinct from its competitors. All of the above a)  b)  c)  d)  e)  To make it go faster. What’s the hurry? (Why are trees tall?) To emphasize the rare useful reactions and avoid toxic alternatives- (162 metabolites out of 14 million possibilities) To tune pathways so rates are compatible- Pathways are amazingly complex in plan Answer(s) hidden here To optimize rates for ambient conditions- Things change -- competition is fierce To allow it to specialize on a lifestyle distinct from its competitors- (Hide from competition) 3 1/24/10 How does the cell generate these very particular 3-D shapes? How would we do it? Questions For Today: 1.  How do biological catalysts (proteins) make catalytic binding surfaces? 2.  How do you measure catalytic ability of enzymes? 3.  Why are proteins so expensive to make? 4.  How do you control catalyst behavior? Questions for another day: 5.  How does modern life make proteins? 6.  How can life improve a catalyst? 7.  How can life add a new catalyst? 8.  How were the first protein catalysts made? Sculpt it? Carve it? Fold it? Life generates 3 ­D shapes by folding…. …by folding of a 1 ­D precursor Life generates 3D forms thro...
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This note was uploaded on 06/13/2013 for the course BIS 2A taught by Professor Grossberg during the Winter '08 term at UC Davis.

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