TABLE 1.

Average single-channel conductances (G) of Oms38 of B. duttonii, B. hermsii, and B. recurrentis in different electrolyte solutionsa

ElectrolyteConcn (M)G (pS)
B. duttoniiB. hermsiiB. recurrentis
KCl3275NMNM
1808080
0.330NMNM
0.115NMNM
LiCl1507560
KCH3COO (pH 7)1306550
  • a The membranes were formed from diphytanoyl phosphatidylcholine dissolved in n-decane. The single-channel conductance was measured in unbuffered electrolyte solutions (approximately pH 6) unless otherwise indicated at an applied voltage of 20 mV and 20°C. The average single-channel conductance, G, was calculated from at least 50 single insertions of Oms38. NM, not measured.