title: lac Repressor headpiece constitutes a reversibly unfolding domain.
mesh_terms: D002151:Calorimetry; D004926:Escherichia coli / Q000032:analysis; D011487:Protein Conformation; D012097:Repressor Proteins; D013696:Temperature; D014157:Transcription Factors
chemical_list: D012097:Repressor Proteins; D014157:Transcription Factors