Questions
- What are the Substitutions in Protein Sequences?
- Substitutions in protein sequences refer to changes in the amino acid sequence of a protein that result from a nucleotide substitution in the corresponding DNA sequence.
There are two types of substitutions: synonymous and non-synonymous.- ==Synonymous substitutions do not change the amino acid sequence because they occur in the third nucleotide position of a codon, which is often degenerate==.
- ==In contrast, non-synonymous substitutions can change the amino acid sequence and, therefore, the structure and function of the protein.
Non-synonymous substitutions can be further classified as conservative or non-conservative, depending on whether the new amino acid is similar or dissimilar in chemical properties to the original amino acid==.
- Substitutions in protein sequences refer to changes in the amino acid sequence of a protein that result from a nucleotide substitution in the corresponding DNA sequence.
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