Journal ArticleEngineering Alternate Ligand Recognition in the PurR Topology: A System of Novel Caffeine Biosensing Transcriptional AntirepressorsRondon, Ronald; Wilson, Corey J.null2021-03-1910282484ACS Synthetic Biology103552 to 5652161-5063https://doi.org/10.1021/acssynbio.0c005821934836; 1921061; 1804639National Science Foundation