Please use this identifier to cite or link to this item:
https://hdl.handle.net/20.500.12202/2766
Title: | VOLTAGE-DEPENDENT CHANNELS FORMED BY COLICINS |
Authors: | KAGAN, BRUCE LAURENCE |
Keywords: | Animal Physiology. |
Issue Date: | 1982 |
Publisher: | ProQuest Dissertations & Theses |
Citation: | Source: Dissertation Abstracts International, Volume: 43-02, Section: B, page: 3490. |
Abstract: | The bactericidal action of colicins K, E1, Ia and other functionally related colicins involves disruption of active transport and leakage of ions from the cell. I show that a single colicin molecule can form a voltage-dependent, relatively non-selective, ion permeable channel of a few picosiemens conductance in a planar phospholipid bilayer membrane. I suggest that the in vivo physiological effects of these colicins result from their ability to form ion-permeable channels in the bacterial inner membrane.;The voltage-dependent behavior of at least one colicin appears to be well described by a simple two state model based on the Boltzmann relation. The striking resemblance between the electrophysiology of the colicins and that of the voltage-dependent channels of nerve and muscle make the colicins an attractive model system for studying the molecular basis of ion channel gating. |
URI: | https://ezproxy.yu.edu/login?url=http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqm&rft_dat=xri:pqdiss:8215449 https://hdl.handle.net/20.500.12202/2766 |
Appears in Collections: | Albert Einstein College of Medicine: Doctoral Dissertations |
Files in This Item:
There are no files associated with this item.
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.