Matsumara et al. showed that disulfide bonds create a more stable mutant T4 lysozyme. They inserted pairs of Cys residues into the T4 lysozyme sequence and observed that:

A. the reduction of cysteine residues created a protein that denatured at lower temperatures than wild-type lysozyme.
B. the reduction of cysteine residues created a protein that was stable at higher temperatures than wild-type lysozyme.
C. the oxidation of cysteine residues created a protein that denatured at lower temperatures than wild-type lysozyme.
D. the oxidation of cysteine residues created a protein that was stable at higher temperatures than wild-type lysozyme.
E. None of these choices is correct.


D

Biology & Microbiology

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