Document Detail

Purification and Biochemical Characterization of a Highly Thermostable Bacteriocin Isolated from Brevibacillus brevis Strain GM100.
MedLine Citation:
PMID:  23291759     Owner:  NLM     Status:  Publisher    
A bacteriocin-producing (11,000 AU mL(-1)) strain was isolated from the rhizosphere of healthy Algerian plants Ononis angustissima Lam., and identified as Brevibacillus brevis strain GM100. The bacteriocin, called Bac-GM100, was purified to homogeneity from the culture supernatant, and, based on MALDI-TOF/MS analysis, was a monomer protein with a molecular mass of 4375.66 Da. The 21 N-terminal residues of Bac-GM100 displayed 65% homology with thurincin H from Bacillus thuringiensis. Bac-GM100 was extremely heat-stable (20 min at 120 °C), and was stable within a pH range of 3-10. It proved sensitive to various proteases, which demonstrated its protein nature. It was also found to display a bactericidal mode of action against gram-negative (Salmonella enteric ATCC 43972, Pseudomonas aeruginosa ATCC 49189, and Agrobacterium tumefaciens C58) and gram-positive (Enterococcus faecalis ENSAIA 631 and Staphylococcus aureus ATCC 6538) bacteria, and a fungistatic mode of action against the pathogenic fungus Candida tropicalis R2 CIP 203.
Mouloud Ghadbane; Daoud Harzallah; Atef Ibn Laribi; Bassem Jaouadi; Hani Belhadj
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2013-1-07
Journal Detail:
Title:  Bioscience, biotechnology, and biochemistry     Volume:  -     ISSN:  1347-6947     ISO Abbreviation:  Biosci. Biotechnol. Biochem.     Publication Date:  2013 Jan 
Date Detail:
Created Date:  2013-1-7     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9205717     Medline TA:  Biosci Biotechnol Biochem     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Laboratory of Applied Microbiology, Department of Microbiology, Faculty of Natural and Life Sciences, University Ferhat Abbas.
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