Protein Stability
Buried hydrophobic side chains in a globular protein fit into a hole formed by the side chains of

13-15 other amino acids
9-12 other amino acids
5-7 other amino acids
1-3 other amino acids

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Protein Stability
Since ΔG° = -RTlnK

a 10-fold increase in K decreases ΔG° by about 2.3*RT
a 10-fold increase in K decreases ΔG° by about 10-fold
a 10-fold decrease in K increases ΔG° by about 10-fold
a 10-fold decrease in K decreases ΔG° by about 2.3*RT

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Protein Stability
Which of the following is the most correct?

Charged amino acids are seldom buried in the interior of a protein
All hydrophobic amino acids are buried when a protein folds
Charged amino acids are never buried in the interior of a protein
Tyrosine is only found in the interior of proteins

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Protein Stability
The correlation between free energy ΔG transfer between the aqueous/organic phases and the surface area of amino acid residues

is similar to effects seen with SDS denaturation
is only meaningful for the polar amino acids
ignores the important contribution of the peptide bond
reflects the reduction in solvent-accessible area during protein folding

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