Kir channel molecular physiology, pharmacology, and therapeutic implications

M Cui, L Cantwell, A Zorn, DE Logothetis - Pharmacology of Potassium …, 2021 - Springer
For the past two decades several scholarly reviews have appeared on the inwardly rectifying
potassium (Kir) channels. We would like to highlight two efforts in particular, which have …

Determinants of trafficking, conduction, and disease within a K+ channel revealed through multiparametric deep mutational scanning

W Coyote-Maestas, D Nedrud, Y He, D Schmidt - Elife, 2022 - elifesciences.org
A long-standing goal in protein science and clinical genetics is to develop quantitative
models of sequence, structure, and function relationships to understand how mutations …

Advancements in the study of inward rectifying potassium channels on vascular cells

C Li, Y Yang - Channels, 2023 - Taylor & Francis
Inward rectifier potassium channels (Kir channels) exist in a variety of cells and are involved
in maintaining resting membrane potential and signal transduction in most cells, as well as …

Inhibition mechanism of NKCC1 involves the carboxyl terminus and long-range conformational coupling

MA Moseng, CC Su, K Rios, M Cui, M Lyu, P Glaza… - Science …, 2022 - science.org
The Na-K-2Cl cotransporter-1 (NKCC1) is an electroneutral Na+-dependent transporter
responsible for simultaneously translocating Na+, K+, and Cl− ions into cells. In human …

On the mechanism of GIRK2 channel gating by phosphatidylinositol bisphosphate, sodium, and the Gβγ dimer

D Li, T **, D Gazgalis, M Cui, DE Logothetis - Journal of Biological …, 2019 - ASBMB
G protein–gated inwardly rectifying K+(GIRK) channels belong to the inward-rectifier K+(Kir)
family, are abundantly expressed in the heart and the brain, and require that …

A novel small-molecule selective activator of homomeric GIRK4 channels

M Cui, K Xu, KD Gada, B Shalomov, M Ban… - Journal of Biological …, 2022 - ASBMB
G protein–sensitive inwardly rectifying potassium (GIRK) channels are important
pharmaceutical targets for neuronal, cardiac, and endocrine diseases. Although a number of …

Palmitoylation of the KATP channel Kir6.2 subunit promotes channel opening by regulating PIP2 sensitivity

HQ Yang, W Martinez-Ortiz, JI Hwang… - Proceedings of the …, 2020 - National Acad Sciences
A physiological role for long-chain acyl-CoA esters to activate ATP-sensitive K+ (KATP)
channels is well established. Circulating palmitate is transported into cells and converted to …

Conduction through a narrow inward-rectifier K+ channel pore

H Bernsteiner, EM Zangerl-Plessl, X Chen… - Journal of General …, 2019 - rupress.org
Inwardly rectifying potassium (Kir) channels play a key role in controlling membrane
potentials in excitable and unexcitable cells, thereby regulating a plethora of physiological …

Use of a molecular switch probe to activate or inhibit GIRK1 heteromers in silico reveals a novel gating mechanism

D Gazgalis, L Cantwell, Y Xu, GA Thakur, M Cui… - International Journal of …, 2022 - mdpi.com
G protein-gated inwardly rectifying K+ (GIRK) channels form highly active heterotetramers in
the body, such as in neurons (GIRK1/GIRK2 or GIRK1/2) and heart (GIRK1/GIRK4 or …

Ivermectin activates GIRK channels in a PIP2‐dependent, Gβγ‐independent manner and an amino acid residue at the slide helix governs the activation

IS Chen, M Tateyama, Y Fukata… - The Journal of …, 2017 - Wiley Online Library
Key points Ivermectin (IVM) is a widely used antiparasitic drug in humans and pets which
activates glutamate‐gated Cl− channel in parasites. It is known that IVM binds to the …