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enol form of uracil

tautomers of adenine

guanine tautomer

enol form of adenine

tautomerization dna mutation

tautomers of uracil

cytosine tautomers

tautomeric base pairing

The more stable keto forms of thymine and guanine and amino forms of adenine and cytosine may sometimes undergo tautomeric shifts to the less stable enol
with cytosine, could adopt rare enol tautomeric form. As a consequence, guanine can form hydrogen bonds with thymine in DNA (for uracil in RNA). Such a mo-.
29 Oct 2015 They infer that imino-Adenine base pairs with amino-cytosine (normal form) and enol-thymine base pairs with keto-guanine (normal form). A rare nucleotide base tautomer in the structure of an asymmetric DNA junction.
17 Jul 2007 amino or imino forms, and guanine, thymine, and uracil (which are cyclic amides) can exist in either lactam (keto) or lactim (enol) forms.
Studies on tautomeric forms of Guanine-Cytosine base pairs of nucleic acids and pairs are theoretically investigated with a focus on the keto-enol tautomerism
In organic chemistry, keto–enol tautomerism refers to a chemical equilibrium between a keto Normally, the keto–enol tautomerization chemical equilibrium is highly thermodynamically driven, Rare enol tautomers of the bases guanine and thymine can lead to mutation because of their altered base-pairing properties.
18 Dec 2008 Thus A is the favored tautomer for reasons of both stability and incorporation into Here are the tautomers of cytosine, thymine, and uracil:
Both guanine and thymine can switch easily from one tautomer to another. keto forms instead of the enol forms, they could "form" two base pairs, an adenine
Tautomerization[edit]. Guanine may go through tautomerization, interchanging from the keto to the enol functionality by

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March 2018