AP	Action Potential
ATP	Adenosine Triphosphate
CaM	Calmodulin
CaMK2d	Ca2+/Calmodulin-Dependent Protein Kinase II Delta Isoform
CASQ2	Calsequestrin 2
Cav1.2	L-Type Calcium Channel Isoform
CICR	Calcium-Induced Calcium Release
CPVT	Catecholaminergic Polymorphic Ventricular Tachycardia
cTnC	Cardiac Troponin C
ECC	Excitation–Contraction Coupling
EC50	Half Maximal Effective Concentration
EF-hand	Helix–Loop–Helix Structural Domain (Calcium-Binding Motif)
HF	Heart Failure
IC50	Half Maximal Inhibitory Concentration
ICaL	L-Type Calcium Current
IK1	Inward Rectifier Potassium Current
IKr	Rapid Delayed Rectifier Potassium Current
IKs	Slow Delayed Rectifier Potassium Current
INa	Rapid Depolarizing Sodium Current
Ito	Transient Outward Potassium Current
JNT	Junctin
JPH2	Junctophilin 2
jSR	Junctional Sarcoplasmic Reticulum
Kir2.1	Potassium Channel Isoform Underlying IK1
Kv4.2	Potassium Channel Isoform Underlying Ito
Mg-ATP	Magnesium–ATP Complex
Nav1.5	Cardiac Sodium Channel Isoform
NCX	Sodium–Calcium Exchanger
PKA	Protein Kinase A
PLB	Phospholamban
Po	Open Probability
PtdIns(3,4,5)P3	Phosphatidylinositol (3,4,5)-Trisphosphate
RyR1	Ryanodine Receptor Type 1
RyR2	Ryanodine Receptor Type 2
SERCA	Sarco/Endoplasmic Reticulum Ca2+-ATPase
SR	Sarcoplasmic Reticulum
SUMOylase	Small Ubiquitin-Like Modifier enzyme
TRDN	Triadin