Wobble base pair

Wobble base pair is a type of base pair in RNA molecules. It is a non-standard base pair that occurs when the pairing rules of Watson-Crick base pairs are not followed. The term "wobble" was first introduced by Francis Crick in 1966.

Overview

The wobble base pair is a result of the flexibility in the RNA structure, which allows for more than one possible pairing for a given base. This is in contrast to the strict pairing rules of DNA, where adenine (A) pairs with thymine (T) and guanine (G) pairs with cytosine (C). In RNA, however, guanine can pair with uracil (U), in addition to its standard pairing with cytosine.

Wobble Hypothesis

The Wobble Hypothesis was proposed by Francis Crick in 1966 to explain the phenomenon of wobble base pairs. According to this hypothesis, the first two base pairs in an anticodon follow the standard Watson-Crick base pairing rules, while the third base pair can wobble, allowing for non-standard pairings. This wobble allows for a single tRNA molecule to recognize more than one codon.

Biological Significance

The wobble base pair plays a significant role in the genetic code. It allows for the genetic code to be degenerate, meaning that more than one codon can code for a single amino acid. This degeneracy is thought to be an evolutionary advantage, as it allows for a certain degree of mutation without affecting the protein that is produced.

See Also

• Base pair
• RNA
• Watson-Crick base pairs
• Wobble Hypothesis
• Genetic code

Wobble base pair Resources
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