title: An obligatory alpha-helical amino acid residue.
mesh_terms: D000595:Amino Acid Sequence; D000621:Aminoisobutyric Acids / Q000032:analysis*; D000900:Anti-Bacterial Agents / Q000032:analysis*; D004355:Drug Stability; D004735:Energy Transfer; D008722:Methods; D008956:Models, Chemical; D011487:Protein Conformation; D013237:Stereoisomerism
chemical_list: D000621:Aminoisobutyric Acids; D000900:Anti-Bacterial Agents