Demin Ma

ORCID: 0000-0002-2730-3680
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About
Contact & Profiles
Research Areas
  • Ion channel regulation and function
  • Cardiac electrophysiology and arrhythmias
  • Neuroscience and Neuropharmacology Research
  • Electrochemical Analysis and Applications
  • N-Heterocyclic Carbenes in Organic and Inorganic Chemistry
  • Neurobiology and Insect Physiology Research
  • Biochemical Analysis and Sensing Techniques
  • Invertebrate Immune Response Mechanisms
  • Coordination Chemistry and Organometallics
  • Force Microscopy Techniques and Applications

Zhejiang University
2022-2025

Interface (United Kingdom)
2025

Zhejiang Lab
2024

Sir Run Run Shaw Hospital
2022

Insects rely on a family of seven transmembrane proteins called gustatory receptors (GRs) to encode different taste modalities, such as sweet and bitter. We report structures

10.1126/science.adj2609 article EN Science 2024-02-02

The human voltage-gated potassium channel KCNQ2/KCNQ3 carries the neuronal M-current, which helps to stabilize membrane potential. KCNQ2 can be activated by analgesics and antiepileptic drugs but their activation mechanisms remain unclear. Here we report cryo-electron microscopy (cryo-EM) structures of KCNQ2-CaM in complex with three activators, namely drug cannabidiol (CBD), lipid phosphatidylinositol 4,5-bisphosphate (PIP2), HN37 (pynegabine), an clinical trial, either closed or open...

10.1038/s41467-023-42416-x article EN cc-by Nature Communications 2023-10-19

The cardiac KCNQ1 potassium channel carries the important I Ks current and controls heart rhythm. Hundreds of mutations in can cause life-threatening arrhythmia. Although structures have been recently resolved, structural basis for dynamic electro-mechanical coupling, also known as voltage sensor domain–pore domain (VSD-PD) remains largely unknown. In this study, utilizing two VSD-PD coupling enhancers, namely, membrane lipid phosphatidylinositol 4,5-bisphosphate (PIP 2 ) a small-molecule...

10.1073/pnas.2207067119 article EN cc-by-nc-nd Proceedings of the National Academy of Sciences 2022-11-03

The human voltage-gated potassium channels KCNQ2, KCNQ3, and KCNQ5 can form homo- heterotetrameric that are responsible for generating the neuronal M current maintaining membrane potential stable. Activation of KCNQ requires both depolarization phosphatidylinositol 4,5-bisphosphate (PIP 2 ). Here, we report cryoelectron microscopy structures KCNQ5–calmodulin (CaM) complex in apo, PIP -bound, - activator HN37-bound states either a closed or an open conformation. In conformation, molecule...

10.1073/pnas.2416738122 article EN cc-by-nc-nd Proceedings of the National Academy of Sciences 2025-04-02
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