A stable disulfide-free gene-3-protein of phage fd generated by in vitro evolution.

Abstract excerpt

Disulfide bonds provide major contributions to the conformational stability of proteins, and their cleavage often leads to unfolding. The gene-3-protein of the filamentous phage fd contains two disulfides in its N1 domain and one in its N2 domain, and these three disulfide bonds are essential for the stability of this protein. Here, we employed in vitro evolution to generate a disulfide-free variant of the N1-N2...

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