Table 2.
Binding Partner | Effect of CaMKII Phosphorylation/Phospho-Mimic Mutation on Binding | Ref | |
---|---|---|---|
Protein | Cellular Function | ||
Brain and acute leukaemia (BAALC) 1-6-8 | Haematopoietic cell proliferation, survival, and differentiation | Non-phosphorylated and 286 phospho-mimic mutants bind, 253 phospho-mimic mutation significantly increases binding | [93,96] |
Calcium channel α-subunit isoforms (L-type) | Calcium influx | Non-phosphorylated CaMKII binds α1, α2a, α3 and α4 subunits; pThr286 binds only α1 and α2a subunits | [97] |
Camguk/CASK | Synaptic targeting and synaptic plasticity | Non-phosphorylated CaMKII binds, pThr305/306 decreases binding | [95] |
Densin-180 (LRRC7) | Dendritic scaffolding protein | pThr286 enhances binding compared to non-phosphorylated CaMKII | [98,99] |
Desmin | Muscle intermediate filament | Non-phosphorylated CaMKII binds, 286 and 253 phospho-mimic mutations increase binding | [91,92,93] |
Diacylglycerol lipase α (DGLα) | Key enzyme in biosynthesis of the endocannabinoid 2-arachidonoylglycerol | Non-phosphorylated CaMKII does not bind, pT286 directly interacts | [100] |
Metabotropic glutamate receptor 5 (mGluR5) | Metabotropic glutamate receptor involved in various brain functions, including motor behaviour, memory and cognition | pT286 decreases binding compared to non-phosphorylated CaMKII | [101] |
Microtubule-associated protein 2 (MAP-2) | Microtubule assembly | Non-phosphorylated CaMKII binds, 286 phospho-mimic mutation increases binding | [91,92,93] |
Myelin Basic Protein (MBP) | Major component of the myelin sheath | Non-phosphorylated CaMKII binds, 286 phospho-mimic mutation slightly decreases binding, 253 phospho-mimic mutation abrogates binding | [93] |
GRIN2A/2B (GluN2A/2B) |
Subunit of voltage-sensitive ionotropic glutamate receptor involved in synaptic plasticity | pThr286 enhances binding compared to non-phosphorylated CaMKII | [85,86,87,88] |
Projectin | Integral protein of insect flight muscle | pThr286 decreases binding compared to non-phosphorylated CaMKII | [102] |
Syntaxin 1A | Component of exocytotic molecular machinery | Non-phosphorylated CaMKII did not bind, pT286 directly interacts | [103] |
Tau | Microtubule assembly | Non-phosphorylated and 253 phospho-mimic mutation bind, 286 phospho-mimic mutation increases binding | [92,93,104] |
Tyrosine hydroxylase isoform 2 (human) | Catecholamine biosynthesis | Non-phosphorylated and 286 phospho-mimic mutants bind, 253 phospho-mimic mutation increases binding | [93] |
Tyrosine hydroxylase isoform 2 (human), phosphorylated at Ser19 and Ser40 | Catecholamine biosynthesis | Binding is enhanced for non-phosphorylated, 286 and 253 phospho-mimic mutation when compared to non-phosphorylated tyrosine hydroxylase | [93] |