Figure 2
Plasma membrane ion channels. Plasma membrane calcium channels include Orai (activated by Ca2+ store depletion), transient receptor potential (TRP), P2X (activated by ligands such as ATP), and voltage gated Ca2+ channels (VGCC). Plasma membrane sodium channels include voltage-gated sodium channels (VGSC), sodium leak channel (NALCN)
and epithelial sodium channel (ENaC). Plasma membrane potassium channels include voltage gated channels (VGKC two-pore domain
(K2P) channels, Ca2+-activated channels (KCa) and inwardly rectifying channels (IRK). Plasma membrane chloride channels include maxi channels,
cystic fibrosis transmembrane conductance regulator (CFTR), Ca2+-activated channels (CaCC), ligand-gated channels (LGCC), volume-regulated anion channels (VRAC), and the chloride channel
superfamily (CIC).