{Reference Type}: Journal Article {Title}: Structural and functional conservation of the activating Ca2+ binding site in inositol 1,4.5-trisphosphate and ryanodine receptors. {Author}: Chen YS;Van Petegem F; {Journal}: Cell Calcium {Volume}: 108 {Issue}: 0 {Year}: 12 2022 {Factor}: 4.69 {DOI}: 10.1016/j.ceca.2022.102671 {Abstract}: Inositol 1,4,5-trisphosphate receptors (IP3Rs) and Ryanodine Receptors (RyRs) dictate the release of Ca2+ from the Endoplasmic (ER) and Sarcoplasmic Reticulum (SR). Arige et al [1] investigated the functional importance of specific Ca2+-coordinating residues, unambiguously confirming the activating Ca2+ binding site in the IP3R.