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Home Q & A Board Biology-Related Homework Help Biochemistry
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Hog95 Hog95
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11 years ago
RNA bases are built from amino acids. Thus amino acids (which are produced in the Urey Miller experiment) are older than RNA building blocks (which are not produced in this experiment). Is it reasonable that the only use to which amino acids were put was synthesis of RNA building blocks?
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#1
Educator
11 years ago
Not really. A system rich in amino acids would have at least some peptides. And there are many processes that are easily catalyzed by simple proteins but have never been demonstrated using RNA ribozymes. An example would be the sort of electron transfer mediated by iron sulfur clusters. Cellular synthesis of purines and pyrimidines must be very ancient, but it would seem likely that these are merely representatives of many other processes involving amino acids and peptides.
Hog95 Author
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#2
11 years ago
Thank you!
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