Membrane activity of isophthalic acid derivatives:: Ion channel formation by a low molecular weight compound

被引:34
作者
Fyles, TM
Knoy, R
Müllen, K
Sieffert, M
机构
[1] Univ Victoria, Dept Chem, Victoria, BC V8W 3P6, Canada
[2] Max Planck Inst Polymer Res, D-55128 Mainz, Germany
关键词
D O I
10.1021/la0105937
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
A suite of 17 alkoxy-substituted isophthalic acid derivatives has been assessed for the ability to open well-defined ion channels in planar and vesicle bilayer membranes. One compound, 5-(12-tricosanoxy)-isophthalic acid, forms nonrectified cation selective channels with open lifetimes of the order of seconds and with mean specific conductance ranging from 9.2 pS for NaCl and 15.4 pS for KCl to 31.0 pS for CsCl. In addition to this dominant channel behavior, occasional variations in conductance levels suggest that related oligomeric channel structures can form. Channel formation is under close structural control as a compound bearing only two more methylene groups is significantly less active. The active compound has the lowest molecular weight of any known ion channel forming compound.
引用
收藏
页码:6669 / 6674
页数:6
相关论文
共 43 条
[1]   Planar bilayer conductance and fluorescence studies confirm the function and location of a synthetic, sodium-ion-conducting channel in a phospholipid bilayer membrane [J].
Abel, E ;
Maguire, GEM ;
Meadows, ES ;
Murillo, O ;
Jin, T ;
Gokel, GW .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1997, 119 (38) :9061-9062
[2]   An ion conductor derived from spermine and cholic acid [J].
Bandyopadhyay, P ;
Janout, V ;
Zhang, LH ;
Sawko, JA ;
Regen, SL .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2000, 122 (51) :12888-12889
[3]  
Baumeister B, 2000, ANGEW CHEM INT EDIT, V39, P1955, DOI 10.1002/1521-3773(20000602)39:11<1955::AID-ANIE1955>3.0.CO
[4]  
2-M
[5]   ELECTRICAL CAPACITY OF BLACK LIPID FILMS AND OF LIPID BILAYERS MADE FROM MONOLAYERS [J].
BENZ, R ;
FROHLICH, O ;
LAUGER, P ;
MONTAL, M .
BIOCHIMICA ET BIOPHYSICA ACTA, 1975, 394 (03) :323-334
[6]   Structure of the MscL homolog from Mycobacterium tuberculosis:: A gated mechanosensitive ion channel [J].
Chang, G ;
Spencer, RH ;
Lee, AT ;
Barclay, MT ;
Rees, DC .
SCIENCE, 1998, 282 (5397) :2220-2226
[7]   A biosensor that uses ion-channel switches [J].
Cornell, BA ;
BraachMaksvytis, VLB ;
King, LG ;
Osman, PDJ ;
Raguse, B ;
Wieczorek, L ;
Pace, RJ .
NATURE, 1997, 387 (6633) :580-583
[8]   Proof for a nonproteinaceous calcium-selective channel in Escherichia coli by total synthesis from (R)-3-hydroxybutanoic acid and inorganic polyphosphate [J].
Das, S ;
Lengweiler, UD ;
Seebach, D ;
Reusch, RN .
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 1997, 94 (17) :9075-9079
[9]   Scanning tunneling microscopy:: A unique tool in the study of chirality, dynamics, and reactivity in physisorbed organic monolayers [J].
De Feyter, S ;
Gesquière, A ;
Abdel-Mottaleb, MM ;
Grim, PCM ;
De Schryver, FC ;
Meiners, C ;
Sieffert, M ;
Valiyaveettil, S ;
Müllen, K .
ACCOUNTS OF CHEMICAL RESEARCH, 2000, 33 (08) :520-531
[10]   Expression of chirality and visualization of stereogenic centers by scanning tunneling microscopy [J].
De Feyter, S ;
Gesquière, A ;
Grim, PCM ;
De Schryver, FC ;
Valiyaveettil, S ;
Meiners, C ;
Sieffert, M ;
Müllen, K .
LANGMUIR, 1999, 15 (08) :2817-2822