a) replacing a Ser with any other amino acid has the least effect on protein structure and function. b) replacing a Trp with any other amino acid has the greatest effect on protein structure and function. c) replacing a Lys with an Arg or a Leu with an Ile has very little effect on protein structure and function. Explain why each observation makes sense based on what you know about amino acids.
Added by Aaron V.
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Reasoning: Ser is polar and small, but its replacement can introduce a bulky, nonpolar, charged, or differently reactive side chain. In many positions Ser participates in hydrogen bonding or active-site interactions, so substituting it can disrupt structure or Show more…
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(a) Serine is the amino acid residue that can be replaced with the least effect on protein structure and function. (b) Replacement of tryptophan causes the greatest effect on protein structure and function. (c) Replacements such as Lys -> Arg and Leu -> Ile usually have very little effect on protein structure and function.
Supreeta N.
Rittonalize the following observations. (a) Serine is the amino acid residue that can be replaced with the least effect on protein structure and function. (b) Replacement of tryptophan causes the greatest effect on protein structure and function. very little effect on protein structure and function.
Nishant K.
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