Kinase Translocation
Kinase Translocation - Related Videos
02:54
Protein Kinases and Phosphatases
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2020
Proteins undergo chemical modifications that trigger changes in the charge, structure, and conformation of the proteins. Phosphorylation, acetylation, glycosylation, nitrosylation, ubiquitination, lipidation, methylation, and proteolysis are various protein modifications that regulate protein activity. Such modifications are usually enzyme-driven. Protein kinases Many proteins in the cell are regulated by phosphorylation, the addition of a phosphate group. A family of enzymes called kinases...
12:27
Measuring Peptide Translocation into Large Unilamellar Vesicles
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Cited by 9 •
2012
This protocol details a method for the quantitative measure of peptide translocation into large unilamellar lipid vesicles. This method also provides information about the rate of membrane translocation and can be used to identify peptides that efficiently and spontaneously cross lipid bilayers.
06:09
Assaying the Kinase Activity of LRRK2 in vitro
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Cited by 3 •
2012
Leucine Rich Repeat Kinase 2 is a large multidomain kinase, mutations in which are the most common genetic cause of Parkinson's disease. Analysis of the kinase activity of this protein has proven to be a crucial tool in understanding the biology and dysfunction of this protein. In this paper, in vitro assaying of the kinase activity of LRRK2 and a selection of its mutants is described, providing an experimental system to examine phosphorylation of putative substrates and potential dysfunction...
11:13
Identification of Kinase-substrate Pairs Using High Throughput Screening
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Cited by 1 •
2015
Protein phosphorylation is a central feature of how cells interpret and respond to information in their extracellular milieu. Here, we present a high throughput screening protocol using kinases purified from mammalian cells to rapidly identify kinases that phosphorylate a substrate(s) of interest.
08:05
Assaying Protein Kinase Activity with Radiolabeled ATP
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Cited by 15 •
2017
Protein kinases are highly evolved signaling enzymes and scaffolds that are critical for inter- and intracellular signal transduction. We present a protocol for measuring kinase activity through the use of radiolabeled adenosine triphosphate ([γ-32P] ATP), a reliable method to aid in elucidation of cellular signaling regulation.
FAQs
Receptor stimulation can alter a kinase through phosphorylation or a conformational change. These changes may expose a localization signal or create a binding site, allowing the protein to move toward a particular compartment. The resulting relocation places the kinase near selected substrates and regulatory partners, changing where signaling proceeds.
The destination determines which substrates and regulatory partners a kinase can encounter. Movement to the plasma membrane, cytoplasm, nucleus, or another structure can therefore shift the site at which a signal is transmitted. This spatial control helps explain how signaling contributes to different cellular responses, including growth, differentiation, or stress responses.
Both the cell’s initiating cue and the kinase’s molecular state can influence its destination. External or internal cues may trigger phosphorylation or conformational changes, while the resulting localization signal or binding site helps direct movement. Examining these links is important because altered placement can affect signaling pathways associated with disease.
Researchers can use fluorescence imaging, cell fractionation, and live-cell reporters to examine kinase movement. Applied together or separately, these methods can reveal where the kinase is found and when redistribution occurs. That information lets investigators relate a localization change to a signaling event and evaluate its connection with relevant substrates or regulatory partners.
An informative study should track both the kinase’s location and the timing of its redistribution. It should also consider the cellular cue that precedes movement and the compartment reached, because these observations connect the translocation event with nearby substrates and regulatory partners. This combined view supports mechanistic interpretation rather than treating relocation as an isolated visual change.
Kinase translocation is relevant to studies of growth, differentiation, stress responses, and disease because these outcomes depend on regulated signaling. Mapping when and where a kinase relocates can clarify pathway mechanisms, identify the compartments involved in a response, and support research aimed at therapeutic development. The approach is useful in both basic biology and disease-focused investigation.