Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1936208 | Biochemical and Biophysical Research Communications | 2008 | 7 Pages |
Abstract
Patch clamping was used to investigate, for the first time, the electrophysiological properties of pores formed by a cholesterol-dependent cytolysin in the membrane of nucleated cells rather than in artificial membranes as previously. Pneumolysin pores in inside-out patches of CHO cell membranes had a broad range of conductance classified into small (<200 pS), medium (>200 pS and <1 nS) and large (>1 nS). A lytic-deficient mutant of pneumolysin (W433F) induced a similar spectrum of channels but there were more small channels than with wild-type (WT) toxin and the number of events was decreased. The WT toxin also induced channels when given to the inside surface of the plasma membrane.
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Authors
Rana G. El-Rachkidy, Noel W. Davies, Peter W. Andrew,