| Purification and Biochemical Characterization of a Highly Thermostable Bacteriocin Isolated from Brevibacillus brevis Strain GM100. | |
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MedLine Citation:
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PMID: 23291759 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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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. |
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Authors:
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Mouloud Ghadbane; Daoud Harzallah; Atef Ibn Laribi; Bassem Jaouadi; Hani Belhadj |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2013-1-07 |
Journal Detail:
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Title: Bioscience, biotechnology, and biochemistry Volume: - ISSN: 1347-6947 ISO Abbreviation: Biosci. Biotechnol. Biochem. Publication Date: 2013 Jan |
Date Detail:
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Created Date: 2013-1-7 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9205717 Medline TA: Biosci Biotechnol Biochem Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Affiliation:
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Laboratory of Applied Microbiology, Department of Microbiology, Faculty of Natural and Life Sciences, University Ferhat Abbas. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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