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CAMK2B  Protein

All CAMK2B Reagents

Description: Active  
Expression host: Baculovirus-Insect Cells  
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11738-H20B-20
11738-H20B-50
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CAMK2B Related Pathways

CAMK2B Summary & Protein Information

CAMK2B Background

Gene Summary: 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
General information above from NCBI
Catalytic activity: ATP + a protein = ADP + a phosphoprotein.
Enzyme regulation: Activated by Ca(2+)/calmodulin. Binding of calmodulin results in conformational change that relieves intrasteric autoinhibition and allows autophosphorylation of Thr- 287 which turns the kinase in a constitutively active form and confers to the kinase a Ca(2+)-independent activity.
Subunit structure: 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.
Domain: The CAMK2 protein kinases contain a unique C-terminal subunit association domain responsible for oligomerization.
Subcellular location: Cytoplasm, cytoskeleton. Cytoplasm, cytoskeleton, microtubule organizing center, centrosome (By similarity). 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.
Induction: Activity is induced in skeletal muscle during exercise.
Post-translational: Autophosphorylation of Thr-287 following activation by Ca(2+)/calmodulin. Phosphorylation of Thr-287 locks the kinase into an activated state.
Sequence similarity: Belongs to the protein kinase superfamily. CAMK Ser/Thr protein kinase family. CaMK subfamily.
Contains 1 protein kinase domain.
General information above from UniProt

Calcium/calmodulin-dependent protein kinase II beta (CAMK2B) is a member of the serine/threonine protein kinase family and to the Ca(2+)/calmodulin-dependent protein kinase subfamily. CaMKII is an important player in prostate cancer cells ability to escape apoptosis under androgen ablation and facilitate the progression of prostate cancer cells to an androgen independent state. As a multifunctional protein kinase, the loss of activity may play a critical role in initiating the changes leading to ischemia-induced cell death. CaMKII are found to be important for the functions of immune cells. CaMKII can be activated by TLR ligands, and in turn promotes both myeloid differentiating factor 88 and Toll/IL-1 receptor domain-containing adaptor protein-inducing IFN-beta-dependent inflammatory responses by directly activating TAK1 and IRF3. CAMKII has four subunit isoforms (alpha, beta, gamma, delta). It is possible that distinct isoforms of this chain have different cellular localizations and interact differently with calmodulin. The alpha- and beta-isoforms have narrow distributions restricted mainly to neuronal tissues, but the gamma- and delta-isoforms are ubiquitously expressed within neuronal and non-neuronal tissues. CAMK2B is important for controlling the direction of plasticity at the parallel fiber-Purkinje cell synapse. CaMK2 is involved in neuronal survival through the reorganization of the neuroarchitecture and that the regulation of this role is controlled at the level of gene expression. Because CaMK2B influences the expression of many neuroreceptors and influences neural outgrowth and pruning, its altered expression in the cerebral cortex in schizophrenia or depression may contribute to schizophrenia and depression.

CAMK2B Alternative Name

CAM2,CAMK2,CAMKB, [homo-sapiens]
CAM2,CAMK2,CAMK2B,CAMKB,MGC29528, [human]
Camk2b,Camk2d,MGC90738,RP23-340E18.5, [mouse]

CAMK2B Related Studies

  • Hiestand DM, et al. (1992)Calcium/calmodulin dependent protein kinase II mRNA in the gerbil brain after cerebral ischemia. Neurosci Lett. 144(1-2): 75-8.
  • Shackelford DA, et al. (1995) Effect of cerebral ischemia on calcium/calmodulin-dependent protein kinase II activity and phosphorylation. J Cereb Blood Flow Metab. 15(3): 450-61.
  • Walikonis R S, et al. (2001) Densin-180 forms a ternary complex with the (alpha)-subunit of Ca2+/calmodulin-dependent protein kinase II and (alpha)-actinin. J. Neurosci. (United States). 21 (2): 423-33.
  • Shimazaki A, et al. (2006) Calcium/calmodulin-dependent protein kinase II in human articular chondrocytes. Biorheology. 43(3-4): 223-33.
  • Novak G, et al. (2006) Increased expression of calcium/calmodulin-dependent protein kinase IIbeta in frontal cortex in schizophrenia and depression. Synapse. 59(1): 61-8.
  • Rokhlin OW, et al. (2007) Calcium/calmodulin-dependent kinase II plays an important role in prostate cancer cell survival. Cancer Biol Ther. 6(5): 732-42.
  • van Woerden GM, et al. (2009) betaCaMKII controls the direction of plasticity at parallel fiber-Purkinje cell synapses. Nat Neurosci. 2009 Jul;12(7): 823-5. .
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