Nuclear Magnetic Resonance Study and Secondary Structure Determination of the Antibiotic Peptide, Aibellin

Autor: Tetsuo Hayase, Mina Kanda, Hideyuki Aoyama, Shigenori Kumazawa, Masami Utagawa, Hiroyuki Ohtani, Takashi Mikawa, Isao Chiga, Tsuneo Hino
Rok vydání: 1994
Předmět:
Zdroj: Bioscience, Biotechnology, and Biochemistry. 58:2188-2192
ISSN: 1347-6947
0916-8451
DOI: 10.1271/bbb.58.2188
Popis: Aibellin is a 20-residue peptide antibiotic that has been isolated from the fungus Verticimonosporium ellipticum. Sequence-specific assignment of the 1H- and 13C-NMR signals of aibellin in a methanol solution was achieved by using the two-dimensional NMR technique. Furthermore, its secondary structure was characterized by circular dichroism (CD) and NOESY spectra. The observed NOEs, 3JNHC alpha H coupling constants and amide hydrogen-deuterium (H-D) exchange rates show that the peptide consisted of two alpha-helices and a bent structure around a Pro-14 residue.
Databáze: OpenAIRE