Solution Structure of LCI, a Novel Antimicrobial Peptide from Bacillus subtilis

Autor: Guang-Ying Lu, Bin Xia, Jinfeng Wang, Zhang-Liang Chen, Weibin Gong
Rok vydání: 2011
Předmět:
Zdroj: Biochemistry. 50:3621-3627
ISSN: 1520-4995
0006-2960
DOI: 10.1021/bi200123w
Popis: LCI, a 47-residue cationic antimicrobial peptide (AMP) found in Bacillus subtilis, is one of the main effective components that have strong antimicrobial activity against Xanthomonas campestris pv Oryzea and Pseudomonas solanacearum PE1, etc. To provide insight into the activity of the peptide, we used nuclear magnetic resonance spectroscopy to determine the structure of recombinant LCI. The solution structure of LCI has a novel topology, containing a four-strand antiparallel β-sheet as the dominant secondary structure. It is the first structure of the LCI protein family. Different from any known β-structure AMPs, LCI contains no disulfide bridge or circular structure, suggesting that LCI is also a novel β-structure AMP.
Databáze: OpenAIRE