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Voltage-sensitive ion channel ofEscherichia coli (1989)

Delcour, Anne H. ; Martinac, Boris ; Adler, Julius ; [et al.]

Springer

The journal of membrane biology 112 (1989), S. 267-275

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ISSN: 1432-1424

Keywords: Escherichia coli ; outer membrane ; ion channel ; patch clamp ; porin

Source: Springer Online Journal Archives 1860-2000

Topics: Biology , Chemistry and Pharmacology

Notes: Summary A voltage-sensitive, cation-selective ion channel ofEscherichia coli has been reconstituted into liposomes and studied with the patch-clamp method. The single channel conductance was 91 pS in symmetric solutions of 150mm KCl. Many channels were open most of the time, with frequent brief transitions to closed levels. Multiple conducting units could close and reopen simultaneously, and this apparent cooperativity in gating was increases with depolarizing voltages. Above a voltage threshold, the channels closed irreversibly, often in groups.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/BF01870957

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