The product of this gene belongs to the serine/threonine protein kinase family and to the Ca(2+)/calmodulin-dependent protein kinase subfamily. Calcium signaling is crucial for several aspects of plasticity at glutamatergic synapses. In mammalian cells, the enzyme is composed of four different chains: alpha, beta, gamma, and delta. The product of this gene is a beta chain. It is possible that distinct isoforms of this chain have different cellular localizations and interact differently with calmodulin. Eight transcript variants encoding eight distinct isoforms have been identified for this gene. [provided by RefSeq, Jul 2008].
Function:
Calcium/calmodulin-dependent protein kinase that functions autonomously after Ca(2+)/calmodulin-binding and autophosphorylation, and is involved in dendritic spine and synapse formation, neuronal plasticity and regulation of sarcoplamic reticulum Ca(2+) transport in skeletal muscle. In neurons, plays an essential structural role in the reorganization of the actin cytoskeleton during plasticity by binding and bundling actin filaments in a kinase-independent manner. This structural function is required for correct targeting of CaMK2A, which acts downstream of NMDAR to promote dendritic spine and synapse formation and maintain synaptic plasticity which enables long-term potentiation (LTP) and hippocampus-dependent learning. In developing hippocampal neurons, promotes arborization of the dendritic tree and in mature neurons, promotes dendritic remodeling. Participates in the modulation of skeletal muscle function in response to exercise. In slow-twitch muscles, is involved in regulation of sarcoplamic reticulum (SR) Ca(2+) transport and in fast-twitch muscle participates in the control of Ca(2+) release from the SR through phosphorylation of triadin, a ryanodine receptor-coupling factor, and phospholamban (PLN/PLB), an endogenous inhibitor of SERCA2A/ATP2A2.
Subunit:
CAMK2 is composed of 4 different chains: alpha (CAMK2A), beta (CAMK2B), gamma (CAMK2G), and delta (CAMK2D). The different isoforms assemble into homo- or heteromultimeric holoenzymes composed of 12 subunits with two hexameric rings stacked one on top of the other. Interacts with SYNGAP1 and CAMK2N2 (By similarity). Interacts with MPDZ.
Subcellular Location:
Cytoplasm, cytoskeleton. Cytoplasm, cytoskeleton, centrosome. Sarcoplasmic reticulum membrane; Peripheral membrane protein; Cytoplasmic side. Note=In slow-twitch muscle, evenly distributed between longitudinal SR and junctional SR.
Tissue Specificity:
Widely expressed. Expressed in adult and fetal brain. Expression is slightly lower in fetal brain. Expressed in skeletal muscle.
Post-translational modifications:
Autophosphorylation of Thr-287 following activation by Ca(2+)/calmodulin. Phosphorylation of Thr-287 locks the kinase into an activated state.
Similarity:
Belongs to the protein kinase superfamily. CAMK Ser/Thr protein kinase family. CaMK subfamily.
Contains 1 protein kinase domain.
SWISS:
Q9UQM7
Gene ID:
815
Database links:
Entrez Gene: 815 Human
Entrez Gene: 816 Human
Entrez Gene: 817 Human
Entrez Gene: 108058 Mouse
Entrez Gene: 12322 Mouse
Entrez Gene: 12323 Mouse
Entrez Gene: 24245 Rat
Entrez Gene: 24246 Rat
Entrez Gene: 25400 Rat
Omim: 114078 Human
Omim: 607707 Human
Omim: 607708 Human
SwissProt: Q13554 Human
SwissProt: Q13557 Human
SwissProt: Q9UQM7 Human
SwissProt: P11798 Mouse
SwissProt: P28652 Mouse
SwissProt: Q6PHZ2 Mouse
SwissProt: P08413 Rat
SwissProt: P11275 Rat
SwissProt: P15791 Rat
CaMK2b也是丝/苏氨基酸激酶的一种，同属于Ca++/钙调素依赖性蛋白质激酶家族成员。钙／钙调素依赖性蛋白激酶Ⅱb（CaMKⅡb）广泛分布于中枢神经系统内，参与调节神经递质的合成释放、信号转导和突触可塑性的形成以及磷酸化蛋白
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Sample: Small intestine (Mouse) Lysate at 40 ug
Primary: Anti- CAMK2A+CAMK2B+CAMK2D (SL0541R) at 1/300 dilution
Secondary: IRDye800CW Goat Anti-Rabbit IgG at 1/10000 dilution
Predicted band size: 53-73 kD
Observed band size: 60 kD
Sample: Lung (Mouse) Lysate at 40 ug
Primary: Anti- CAMK2A+CAMK2B+CAMK2D (SL0541R) at 1/300 dilution
Secondary: IRDye800CW Goat Anti-Rabbit IgG at 1/10000 dilution
Predicted band size: 53-73 kD
Observed band size: 60 kD
Paraformaldehyde-fixed, paraffin embedded (Rat brain); Antigen retrieval by boiling in sodium citrate buffer (pH6.0) for 15min; Block endogenous peroxidase by 3% hydrogen peroxide for 20 minutes; Blocking buffer (normal goat serum) at 37°C for 30min; Antibody incubation with (CaMK2b) Polyclonal Antibody, Unconjugated (SL0541R) at 1:400 overnight at 4°C, followed by operating according to SP Kit(Rabbit) (sp-0023) instructionsand DAB staining.
Paraformaldehyde-fixed, paraffin embedded (Rat cerebellum); Antigen retrieval by boiling in sodium citrate buffer (pH6.0) for 15min; Block endogenous peroxidase by 3% hydrogen peroxide for 20 minutes; Blocking buffer (normal goat serum) at 37°C for 30min; Antibody incubation with (CaMK2b) Polyclonal Antibody, Unconjugated (SL0541R) at 1:200 overnight at 4°C, followed by operating according to SP Kit(Rabbit) (sp-0023) instructionsand DAB staining.
Paraformaldehyde-fixed, paraffin embedded (mouse brain tissue); Antigen retrieval by boiling in sodium citrate buffer (pH6.0) for 15min; Block endogenous peroxidase by 3% hydrogen peroxide for 20 minutes; Blocking buffer (normal goat serum) at 37°C for 30min; Antibody incubation with (CAMK2A + CAMK2B + CAMK2D) Polyclonal Antibody, Unconjugated (SL0541R) at 1:400 overnight at 4°C, followed by operating according to SP Kit(Rabbit) (sp-0023) instructionsand DAB staining.
Paraformaldehyde-fixed, paraffin embedded (human brain glioma); Antigen retrieval by boiling in sodium citrate buffer (pH6.0) for 15min; Block endogenous peroxidase by 3% hydrogen peroxide for 20 minutes; Blocking buffer (normal goat serum) at 37°C for 30min; Antibody incubation with (CAMK2A + CAMK2B + CAMK2D) Polyclonal Antibody, Unconjugated (SL0541R) at 1:400 overnight at 4°C, followed by operating according to SP Kit(Rabbit) (sp-0023) instructionsand DAB staining.
Blank control:MCF7.
Primary Antibody (green line): Rabbit Anti-CAMK2A + CAMK2B + CAMK2D antibody (SL0541R)
Dilution: 2μg /10^6 cells;
Isotype Control Antibody (orange line): Rabbit IgG .
Secondary Antibody : Goat anti-rabbit IgG-AF488
Dilution: 1μg /test.
Protocol
The cells were fixed with 4% PFA (10min at room temperature)and then permeabilized with 0.1% methanol for 20 min at room temperature. The cells were then incubated in 5%BSA to block non-specific protein-protein interactions for 30 min at room temperature .Cells stained with Primary Antibody for 30 min at room temperature. The secondary antibody used for 40 min at room temperature. Acquisition of 20,000 events was performed.
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