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Why does Diphenylamine only react with the deoxyribose of purines?
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Adam Smith
Why does Diphenylamine only react with the deoxyribose of purines?
As you have correctly stated, the DNA cannot directly react with diphenylamine. First, it has to be cleaved so that the deoxyribose is exposed. In acidic solution and at high temperature, a depurination occurs several orders of magnitude faster than depyrimidination, because N-7 of the purine can be protonated and assist the cleavage.
As you have correctly stated, the DNA cannot directly react with diphenylamine. First, it has to be cleaved so that the deoxyribose is exposed. In acidic solution and at high temperature, a depurination occurs several orders of magnitude faster than depyrimidination, because N-7 of the purine can be protonated and assist the cleavage.
As you have correctly stated, the DNA cannot directly react with diphenylamine. First, it has to be cleaved so that the deoxyribose is exposed. In acidic solution and at high temperature, a depurination occurs several orders of magnitude faster than depyrimidination, because N-7 of the purine can be protonated and assist the cleavage.
See this mechanism of the acid-catalyzed depurination:
As you have correctly stated, the DNA cannot directly react with diphenylamine. First, it has to be cleaved so that the deoxyribose is exposed. In acidic solution and at high temperature, a depurination occurs several orders of magnitude faster than depyrimidination, because N-7 of the purine can be protonated and assist the cleavage.
See this mechanism of the acid-catalyzed depurination:
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