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tautomeric shift

A reversible change in the location of a hydrogen atom in a molecule that alters it from one to another isomer. Thymine and guanine are normally in keto forms, but when in the rare enol ...

tautomeric shift

tautomeric shift   Quick reference

A Dictionary of Genetics (8 ed.)

Reference type:
Subject Reference
Current Version:
2014
Subject:
Science and technology, Life Sciences
Length:
128 words
Illustration(s):
1

... shift a reversible change in the location of a hydrogen atom in a molecule that alters it from one to another isomer. Thymine and guanine are normally in keto forms, but when in the rare enol forms they can join by three hydrogen bonds with keto forms of guanine or thymine, respectively. Likewise, cytosine and adenine are normally in amino forms, but when in the rare imino forms they can join by two hydrogen bonds with amino forms of adenine or cytosine, respectively. Tautomeric shifts that modify the pairing of nucleotides...

tautomeric shift

tautomeric shift  

A reversible change in the location of a hydrogen atom in a molecule that alters it from one to another isomer. Thymine and guanine are normally in keto forms, but when in the rare enol forms (see ...
spontaneous mutation

spontaneous mutation   Quick reference

A Dictionary of Genetics (8 ed.)

Reference type:
Subject Reference
Current Version:
2014
Subject:
Science and technology, Life Sciences
Length:
59 words

...mutations are much more infrequent than induced ones. Causes of spontaneous mutations include transposon insertion, errors during DNA replication, deamination ( q.v .), depurination ( q.v .), and tautomeric shifts. Compare with induced mutation . See chromosome mutation , gene mutation , hot spot , mutagenesis , mutation , tautomeric shift...

point mutation

point mutation   Quick reference

A Dictionary of Genetics (8 ed.)

Reference type:
Subject Reference
Current Version:
2014
Subject:
Science and technology, Life Sciences
Length:
94 words

..., conservative substitution , deamination , deletion , depurination , frameshift mutation , gene mutation , indels , insertion , missense mutation , nonconservative substitution , nonsense mutation , rotational base substitution , synonymous mutation , tautomeric shift , transition , transversion...

base-pair substitution

base-pair substitution   Quick reference

A Dictionary of Genetics (8 ed.)

Reference type:
Subject Reference
Current Version:
2014
Subject:
Science and technology, Life Sciences
Length:
77 words

... bases of nucleic acids , conservative substitution , deamination , depurination , ethyl methane sulfonate (EMS) , gene mutation , missense mutation , nonconservative substitution , nonsense mutation , single nucleotide polymorphism (SNP) , synonymous mutation , tautomeric shift...

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