MODEL PORES FOR BIOLOGICAL-MEMBRANES - THE PROPERTIES OF TRACK-ETCHEDMEMBRANES

Authors
PASTERNAK CA ALDER GM APEL PY BASHFORD CL KORCHEV YE LEV AA ROSTOVTSEVA TK ZHITARIUK NI
Citation
Ca. Pasternak et al., MODEL PORES FOR BIOLOGICAL-MEMBRANES - THE PROPERTIES OF TRACK-ETCHEDMEMBRANES, Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms, 105(1-4), 1995, pp. 332-334
Citations number
15
Categorie Soggetti
Physics, Nuclear","Nuclear Sciences & Tecnology","Instument & Instrumentation
Journal title
Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms → ACNP
ISSN journal
0168583X
Volume
105
Issue
1-4
Year of publication
1995
Pages
332 - 334
Database
ISI
SICI code
0168-583X(1995)105:1-4<332:MPFB-T>2.0.ZU;2-J
Abstract
Particle track membranes composed of polyethyleneterephthalate (PETP) that have been etched to produce narrow pores show many of the propert ies of biological ion channels: rapid switching (quantal current flow) , selectivity between cations and anions, and modulation by H+ and div alent cations such as Zn2+ and Ca2+. PETP membranes modified to alter their surface charge show altered properties. These results have impli cations fur our understanding of ion channels, as well as opening up t he possibility for designing new classes of ionic sensors.