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Brucin, an antibacterial peptide derived from fruit protein of Fructus Bruceae, Brucea javanica (L.) Merr

T Sornwatana1, S Roytrakul, N Wetprasit

  • 1Department of Biochemistry, Faculty of Science, Kasetsart University, Bangkok, Thailand.

Letters in Applied Microbiology
|April 19, 2013
PubMed
Abstract

Insights

A novel antibacterial peptide, Brucin, was isolated from Brucea javanica fruit protein. Brucin exhibits potent activity against Streptococcus pyogenes, exceeding that of penicillin G and chloramphenicol, suggesting its potential as a new antibiotic.

Area of Science:

  • Natural Product Chemistry
  • Microbiology
  • Drug Discovery

Background:

  • Streptococcus pyogenes infections pose a significant public health challenge.
  • Novel antimicrobial agents are urgently needed to combat antibiotic resistance.

Purpose of the Study:

  • To isolate and characterize novel antibacterial peptides from Brucea javanica (L.) Merr. fruit protein.
  • To evaluate the antibacterial activity of these peptides against Streptococcus pyogenes.

Main Methods:

  • Pepsin hydrolysis of Brucea javanica fruit protein.
  • Purification using reverse-phase HPLC.
  • Analysis by SDS-PAGE and nanoLC-MS/MS.
  • Chemical synthesis and comparative antibacterial assays.

Main Results:

  • An 11-amino acid peptide, named Brucin, was identified and synthesized.
  • Brucin demonstrated potent antibacterial activity against Streptococcus pyogenes.
  • Its inhibitory activity was significantly higher than penicillin G and chloramphenicol.

Conclusions:

  • Brucin is a novel, potent antibacterial peptide specific to Streptococcus pyogenes.
  • Brucin shows promise as a potential alternative therapeutic agent for Streptococcus pyogenes infections.
Keywords:
Brucea javanicaStreptococcus pyogenesantimicrobialidentificationpeptide

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