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Synonyms
CAMK, Calcium/calmodulin-dependent protein kinase
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Alternative_names
CAMK, Calcium/calmodulin-dependent protein kinase, CaM kinase-GR
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Description
Involved in many signaling cascades
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Recombinant
Yes
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Source
Baculovirus (Sf9 insect cells)
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Purity by SDS PAGE
≥90%
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Assay
SDS-PAGE
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Activity Specifications test method
83 nmol phosphate incorporated into Autocamtide 2 per minute per mg protein at 30°C for 15 minutes using a final concentration of 50 µM ATP (0.83 uCi/assay).
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Molecular Weight
79.0 kDa
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Storage Temp
-80°C
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Shipping
dry ice
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Shelf Life
12 months
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Concentration
5µg/50 µl
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Appearance
Liquid
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Physical form description
Recombinant protein in storage buffer (50 mM Tris-HCl, pH 7.5, 150 mM NaCl, 0.25 mM DTT, 0.1 mM EGTA, 0.1 mM EDTA, 0.1 mM PMSF, 25% glycerol).
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Background Information
CAMK4 belongs to the serine/threonine protein kinase family and Ca(2+)/calmodulin-dependent protein kinase subfamily. This enzyme is a multifunctional serine/threonine protein kinase with limited tissue distribution. Sikela et al. identified that brain CaM kinase IV (CAMK4) appeared to be restricted to brain in the rat; interestingly, it was not detected in the brain of the newborn, but became detectable within a few days after birth. They also raised the possibility that a defect in Camk4 may be responsible for 1 of the mutant phenotypes in the centromeric region near 2 mutations, which known to affect neurologic function and fertility (1). Wei et al. found Camk4-labeled neurons in the hippocampus, amygdala, anterior cingulate cortex, somatosensory cortex, and insular cortex (2). Kang et al. generated transgenic mice in which the expression of a dominant-negative form of Camk4 was restricted to the postnatal forebrain. In these transgenic mice, activity-induced Creb phosphorylation and Fos expression were significantly attenuated. The results indicated that neural activity-dependent CAMK4 signaling in the neuronal nucleus plays an important role in the consolidation/retention of hippocampus-dependent long-term memory (3). Wu et al. generated transgenic mice that selectively express in skeletal muscle a constitutively active form of CAMK4 and concluded that a calcium-regulated signaling pathway controls mitochondrial biogenesis in mammalian cells (4). Wei et al. studied pain and fear memory in Camk4-null mice and concluded that Camk4 is crucial in the trapping of Ca2(+)/calmodulin complexes in neuronal nuclei and in Creb phosphorylation and activation (5).
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Handling
Centrifuge the vial prior to opening.
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Usage
For Research Use Only! Not to be used in humans
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