part of part of has primary input has small molecule activator calcium channel activity calcium-mediated signaling gated channel activity ligand-gated monoatomic cation channel activity ligand-gated calcium channel activity Reactome:R-HSA-4420052 Reactome:R-HSA-1168376 molecular_function Enables the transmembrane transfer of a calcium ions by a channel that opens when a specific ligand has been bound by the channel complex or one of its constituent parts. Reactome:R-HSA-169683 Reactome:R-HSA-169680 GO:0099604