MULTIPLE ROLES OF INTRACELLULAR CALCIUM  IONS
PI-LINKED
RECEPTOR
LIGAND-GATED
 CALCIUM CHANNEL
VOLTAGE-SENSITIVE
CALCIUM CHANNEL
Ca2+
Ca2+
IP3
CALCIUM IS “STORED”
IN THE ENDOPLASMIC
RETICULUM
2+
MULTIFUNCTIONAL
CAM  KINASES
CAM  KINASE 3
EUKARYOTIC
ELONGATION FACTOR II