Cro, CAP and lambda repressor led the way.
Smith
T L
TL
D001426:Bacterial Proteins / Q000266:history; D002373:Cyclic AMP Receptor Protein / Q000266:history*; D004268:DNA-Binding Proteins / Q000266:history*; D049673:History, 20th Century; D011487:Protein Conformation; D012097:Repressor Proteins / Q000266:history; D013329:Structure-Activity Relationship; D014764:Viral Proteins / Q000266:history; D054334:Viral Regulatory and Accessory Proteins
D001426:Bacterial Proteins; D002373:Cyclic AMP Receptor Protein; D004268:DNA-Binding Proteins; D012097:Repressor Proteins; D014764:Viral Proteins; D054334:Viral Regulatory and Accessory Proteins; C016649:phage repressor proteins