title: Structural characterization of bacitracin components by Frit-fast atom bombardment (FAB) liquid chromatography/mass spectrometry (LC/MS).
abstract: The structural characterization of minor components of bacitracin (BC) complex was carried out using a technique of liquid chromatography/mass spectrometry (LC/MS). Satisfactory total ion current chromatogram of BC complex and excellent mass spectra of many components were given by Frit-fast atom bombardment (FAB) LC/MS analytical system, and the structures of 13 minor components could be proposed. The 13 minor components were classified into two groups, bacitracin A (BC-A) related components and bacitracin F (BC-F) related components depending on their common N-terminal moieties. The structures of BC-A related components and BC-F related components were the same as those of BC-A and BC-F, respectively, except that one to three of isoleucine and leucine residues are replaced by valines. The BC-F related components were degradation products of BC-A related components through the same degradation process as that of BC-A.
authors.affiliation: Aichi Prefectural Institute of Public Health, Nagoya, Japan.
authors.forename: Y
authors.initials: Y
authors.lastname: Ikai
authors.forename: H
authors.initials: H
authors.lastname: Oka
authors.forename: J
authors.initials: J
authors.lastname: Hayakawa
authors.forename: K I
authors.initials: KI
authors.lastname: Harada
authors.forename: M
authors.initials: M
authors.lastname: Suzuki
mesh_terms: D000595:Amino Acid Sequence; D001414:Bacitracin / Q000032:analysis / Q000737:chemistry*; D008401:Gas Chromatography-Mass Spectrometry; D008969:Molecular Sequence Data; D008970:Molecular Weight
chemical_list: D001414:Bacitracin