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Biochemistry of Behavior Griffith Lab. Neuronal Circuits. Behavior. Molecules. ?. Biochemistry. active. inactive. Inactive. X. X. Phosphatase. Phosphatase. Active- Low. Inactive. Phosphatase. CaM. CaM. Ca 2+. T306 T307 Autophosphorylation. Active- Ca 2+ Independent. Active.
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Neuronal Circuits Behavior Molecules
? Biochemistry active inactive
Inactive X X Phosphatase Phosphatase Active- Low Inactive Phosphatase CaM CaM Ca2+ T306 T307 Autophosphorylation Active- Ca2+ Independent Active Active Ca2+ T287 Autophosphorylation CaMKII
dCASK Eag Binds and Activates CaMKII
High Ca2+ Low Ca2+ ATP dCASK CaM X dCASK Ca2+ T306 T307 Autophosphorylation Inactive dCASK Refractory to CaM: Inactive Decreased pT287 CaM Bound: Active dCASK dCASK regulates CaMKII activity and autophosphorylation
Whole-cell Patch Clamp Images: Vivian Budnik et al.
Chronic Modulation of CaMKII Activity Occludes Plasticity of Intrinsic Properties
? Courtship Learning
Inhibition of CaMKII- ala peptide Constitutively active CaMKII Behavior Behavior Plasticity Blocked Memory Blocked Mushroom Body Mushroom Body Central Complex Central Complex 1o Olfactory Neurons 1o Olfactory Neurons Mushroom Body Central Complex Lateral Horn Lateral Horn Antennal Glomeruli Antennal Glomeruli Lateral Horn Lateral Horn Antennal Glomeruli Genetic Dissection of the Courtship Plasticity Circuit Training Memory Enhanced Plasticity Insensitive to T287D Levels Antennal Glomeruli
Neuronal Circuits Behavior Molecules Electrophysiology and Imaging Courtship Learning Signaling: CaMKII Ion Channels: Eag Scaffolds: dCASK
CIin CIfi CItest X CS ( ) CS ( ) + US ( ) Classic Courtship ConditioningSiegel and Hall, 1979 test within 5 min of training 0 15 30 45 60 Time (min)