title: Infrared study of the secondary structure of lac repressor and its tryptic core.
mesh_terms: D004926:Escherichia coli / Q000032:analysis; D011487:Protein Conformation; D012097:Repressor Proteins; D013055:Spectrophotometry, Infrared; D014157:Transcription Factors; D014357:Trypsin
chemical_list: D012097:Repressor Proteins; D014157:Transcription Factors; D014357:Trypsin