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    How Does DTT Affect Protein Structure?

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    After doing a comparative analysis of fish protein I have been asked "What was the purpose of heating the fish protein sample with DTT?"
    I have found conflicting answers from: "stabilization of the sample" to "DTT quantitivly reduces disulphide."

    © BrainMass Inc. brainmass.com October 9, 2019, 8:37 pm ad1c9bdddf
    https://brainmass.com/biology/protein-structure-and-synthesis/dtt-affect-protein-structure-157204

    Solution Preview

    In fact both answers are correct, it really depends on the concentration of DTT used.

    DTT (dithiothreitol: C4H10O2S2) is a reducing agent that affects proteins in the following 2 ways;
    1. DTT breaks disulphide bonds (these bonds are important for the three dimensional structure of many proteins)
    2. Reduces free sulfhydryl groups (these SH2 side groups are important for ...

    Solution Summary

    This solution discusses the two major ways DTT affects protein structure.

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