Journal
NANO LETTERS
Volume 5, Issue 6, Pages 1181-1185Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nl050481q
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We demonstrate that polymerizable planar membranes permit reconstitution of protein ion channels formed by the bacterial toxins Staphylococcus aureus alpha-hemolysin (alpha HL) and Bacillus anthracis protective antigen 63. The alpha HL channel remained functional even after membrane polymerization. Surface pressure measurements suggest that the ease of forming membranes depends on membrane surface elasticity estimated from Langmuir-Blodgett monolayer pressure-area isotherms. The ability to stabilize nanoscale pores in robust ultrathin films may prove useful in single molecule sensing applications.
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