βAR	Beta-Adrenergic Receptor
β1AR	Beta-1-Adrenergic Receptor
β2AR	Beta-2-Adrenergic Receptor
AKAP	A-Kinase Anchoring Protein
cAMP	Cyclic Adenosine Monophosphate
cGMP	Cyclic Guanosine Monophosphate
CaMKII	Calcium/Calmodulin-Dependent Protein Kinase II
CREB	cAMP Response Element-Binding Protein
ERK2	Extracellular Signal-Regulated Kinase 2
GPCR	G-Protein Coupled Receptor
HFpEF	Heart Failure with Preserved Ejection Fraction
ICa,L	L-Type Calcium Current
LTCC	L-Type Calcium Channel
LV	Left Ventricle
mAKAP	Muscle A-Kinase Anchoring Protein
PDE	Phosphodiesterase
PDE4A, PDE4B, PDE4C, PDE4D	Isoforms of Phosphodiesterase 4
PKA	Protein Kinase A
PKA-RI/RII	Protein Kinase A Regulatory Subunit I/II
PKD	Protein Kinase D
PLN	Phospholamban
POPDC1	Popeye Domain Containing 1
RyR2	Ryanodine Receptor 2
SERCA2a	Sarco/Endoplasmic Reticulum Calcium-ATPase 2a
SR	Sarcoplasmic Reticulum
UCR	Upstream Conserved Region
VASP	Vasodilator-stimulated phosphoprotein