A peptide triggers allostery in tet repressor by binding to a unique site.

Abstract excerpt

Regulatory proteins often communicate with each other to manage various cellular processes. Such interactions mostly rely on the recognition of small peptide motifs. The activity of other regulatory proteins depends on small molecular weight effectors and allostery. We demonstrate the in vivo regulation of the tetracycline-dependent Tet repressor by an oligopeptide fused to the N or C terminus of thioredoxin A....

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