Purification of a Pore-forming Peptide Toxin, Tolaasin, Produced by Pseudomonas tolaasii 6264

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Purification of a pore-forming peptide toxin, tolaasin, produced by Pseudomonas tolaasii 6264.

Tolaasin, a pore-forming peptide toxin, is produced by Pseudomonas tolaasii and causes brown blotch disease of the cultivated mushrooms. P. tolaasii 6264 was isolated from the oyster mushroom damaged by the disease in Korean. In order to isolate tolaasin molecules, the supernatant of bacterial culture was harvested at the stationary phase of growth. Tolaasin was prepared by ammonium sulfate pre...

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In silico study of the ion channel formed by tolaasin I produced by Pseudomonas tolaasii.

A toxin produced by Pseudomonas tolaasii, tolaasin, causes brown blotch disease in mushrooms. Tolaasin forms pores on the cellular membrane and destroys cell structure. Inhibiting the ability of tolaasin to form ion channels may be an effective method to protect against attack by tolaasin. However, it is first necessary to elucidate the three-dimensional structure of the ion channels formed by ...

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Tolaasins A--E, five new lipodepsipeptides produced by Pseudomonas tolaasii.

Pseudomonas tolaasii, the causal organism of brown blotch disease of Agaricus bisporus and of the yellowing of Pleurotus ostreatus, was shown to produce in culture tolaasin I (1), tolaasin II (2), and five other minor metabolites, tolaasins A, B, C, D, and E (3-7). These compounds were demonstrated to be important in the development of the disease symptoms. This paper reports on the structural ...

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Bioactivity of volatile organic compounds produced by Pseudomonas tolaasii

Pseudomonas tolaasii is the main bacterial pathogen of several mushroom species. In this paper we report that strains of P. tolaasii produce volatile substances inducing in vitro mycelia growth inhibition of Pleurotus ostreatus and P. eryngii, and Agaricus bisporus and P. ostreatus basidiome tissue blocks brown discoloration. P. tolaasii strains produced the volatile ammonia but not hydrogen cy...

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Potentiation Effect Of 5FU by Fragaceatoxin C Pore-Forming Toxin in MCF-7 Cell Line

Introduction: Chemotherapy has been restricted due to the high-dose side effects. In the present study, acceleration of the chemotherapeutic drug (5FU) entrance into MCF-7 cells has been explored by using a recombinant form of Fragaceatoxin C (FraC) pore-forming toxin. Methods: In this experimental study, the gene for FraC toxin was order from a commercial source and was sub-cloned into pET28a...

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ژورنال

عنوان ژورنال: BMB Reports

سال: 2007

ISSN: 1976-6696

DOI: 10.5483/bmbrep.2007.40.1.113