Match the items in the left column to the appropriate blanks in the sentences on the right. Reset Help ASlvent F-U (WT) 1. Due to loss of van der Waals interactions in the folded state, will hydrogen bonds be more than larger 2. ASpolvent is likely to be unfavorable for the mutant because the smaller Ala side chain is predicted to have clathrate structure in WT the unfolded state than the WT Leu side chain. Thus, will be less than the mutant

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A Leu-Ala mutation at a site buried in the core of the enzyme lysozyme is found to be destabilizing. Explain the observed effect of this mutation on lysozyme stability by predicting how enthalpy (AH), conformational entropy
(ASpeptide), and the hydrophobic effect (ASsolvent) are expected to change for the mutant compared to wild-type lysozyme. Explain how AG for unfolding is affected by your predicted changes in enthalpy or entropy.
Match the items in the left column to the appropriate blanks in the sentences on the right.
Reset Help
AS polvent F-¬U (WT)
1. Due to loss of van der Waals Interactions in the folded state,
will
hydrogen bonds
be more than
larger
2. ASgolvent is likely to be
unfavorable for the mutant because the
clathrate structure in
smaller
Ala side chain is predicted to have
WT
the unfolded state than the WT Leu side chain. Thus,
will be less than
the mutant
AHF-U (WT)
3. These entropic and enthalpic effects make AGF-U more unfavorable for
(i.e., the
is more stable to unfolding
vs.
van der Waals interactions
than
AHr-U (mut)
ASprotein
4.
because differences in conformational entropy around o (Phi) and
(Psi) angles are
for Leu vs. Ala.
ASprotein F-+U (WT) > AS protein FU (mut)
AS solvent F-U (mut)
5. Thus, the differences in AH and
both predict that the mutant will be
stable to denaturation than the WT protein.
more
ASprotein F-U (WT) < ASprotein F-U (mut)
less
AS protein F-U (WT)
z ASprotein F-U (mut)
ASsolvent
Transcribed Image Text:A Leu-Ala mutation at a site buried in the core of the enzyme lysozyme is found to be destabilizing. Explain the observed effect of this mutation on lysozyme stability by predicting how enthalpy (AH), conformational entropy (ASpeptide), and the hydrophobic effect (ASsolvent) are expected to change for the mutant compared to wild-type lysozyme. Explain how AG for unfolding is affected by your predicted changes in enthalpy or entropy. Match the items in the left column to the appropriate blanks in the sentences on the right. Reset Help AS polvent F-¬U (WT) 1. Due to loss of van der Waals Interactions in the folded state, will hydrogen bonds be more than larger 2. ASgolvent is likely to be unfavorable for the mutant because the clathrate structure in smaller Ala side chain is predicted to have WT the unfolded state than the WT Leu side chain. Thus, will be less than the mutant AHF-U (WT) 3. These entropic and enthalpic effects make AGF-U more unfavorable for (i.e., the is more stable to unfolding vs. van der Waals interactions than AHr-U (mut) ASprotein 4. because differences in conformational entropy around o (Phi) and (Psi) angles are for Leu vs. Ala. ASprotein F-+U (WT) > AS protein FU (mut) AS solvent F-U (mut) 5. Thus, the differences in AH and both predict that the mutant will be stable to denaturation than the WT protein. more ASprotein F-U (WT) < ASprotein F-U (mut) less AS protein F-U (WT) z ASprotein F-U (mut) ASsolvent
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