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Inventors: Levon K, Yu B, Zhou YX
Patent Title: Bacterial biosensors
Publication date: 2005
Publication number: WO2005_067425

Abstract: A real-time, portable peptide-containing potentiometric biosensor that can directly identify bacterial spores. Two peptides for specific regognition of B. subtilis and B. anthracis Sterne may be immobilized by a polysiloxane monolyer immobilization (PMI) technique. The sensors translate the biological recognition even into a potential change by detecting, for example, B. subtilis spores in a concentration range 0.08-7.3x104 CFU/ml. The sensor exhibited highly selective recognition properties towards Bacillus subtilis spores over other kinds of spores. The selectively coefficients of the sensors for other kinds of spores are in the range of 0-1.0X10-5. The biosensor system not only has the specificity to distinguish Bacillus subtilis spores in a mixture of B. subtilis and B. thuringiensis (thur.) Kurstaki spores, but also can discriminate between live and dead B. subtilis spores. Furthermore, the sensor can distinguish a Bacillus subtilis 1A700 from other B. subtilis strain. Assay time may be as low as about 5 minutes for a single test. Rapid identification of B. anthracis Sterne and B. anthracis ?Ames was also provided.
URL: http://v3.espacenet.com/textdoc?DB=EPODOC&IDX=WO2005067425&F=0

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