WebAbstract. Inward-rectifying potassium (K + in) channels in guard cells have been suggested to provide a pathway for K + uptake into guard cells during stomatal opening. To test the proposed role of guard cell K + in channels in light-induced stomatal opening, transgenic Arabidopsis plants were generated that expressed dominant negative point mutations in … Web4 dec. 1992 · Inward-rectifying potassium channels located in the plasma membrane of higher plant and animal cells contribute to cellular homeostasis and excitability. The …
Inward rectifiers and their regulation by endogenous polyamines
WebThe Gβγ subunit activates an inward-rectifying K + channel, ... Therefore, it carries inward current throughout the range of pacemaker potential. The phase 4 depolarization reduces the membrane to the threshold for the … Web21 dec. 2001 · In addition to inhibiting the inward-rectifying K + channels, and activating slow anion channels, elevations in [Ca 2+] cyt can also modulate the activity of the H + … the pit hickory hills il
Pharmacological Conversion of a Cardiac Inward Rectifier into an ...
Web26 mei 1998 · In the present study, we describe the detailed characterization of an outward-rectifying K + current with inactivation and unexpected regulation mechanisms in … WebIn this report, we demonstrate that β-cells of SUR1 null islets have an upregulated inward rectifying K+current that helps to compensate for the loss of K(ATP) channels. This … Web1 mei 1999 · Abstract. Recent structure-function analysis of heterologously expressed K +-selective inward-rectifying channels (KIRCs) from plants has revealed that external protons can have opposite effects on different members of the same gene family.An important question is how the diverse response of KIRCs to apoplastic pH is reflected at … the pit hickory nc