title: A folded structure for the lac-repressor headpiece.
mesh_terms: D000595:Amino Acid Sequence; D009682:Magnetic Resonance Spectroscopy; D011487:Protein Conformation; D012097:Repressor Proteins; D013057:Spectrum Analysis; D014157:Transcription Factors
chemical_list: D012097:Repressor Proteins; D014157:Transcription Factors