Sandbox 210: Difference between revisions
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CDK5 could form a complex with p25, an other protein. | CDK5 could form a complex with p25, an other protein. | ||
==Discovery of CDK5== | ==Discovery of CDK5== | ||
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The neurotoxic activator p25 activates Cdk5 in one step by tethering the T-loop in the extended conformation and exposing Cdk5's active site for kinase activity. When activated by p25, Cdk5 causes the death of neurons, leading to neurodegenerative diseases. | The neurotoxic activator p25 activates Cdk5 in one step by tethering the T-loop in the extended conformation and exposing Cdk5's active site for kinase activity. When activated by p25, Cdk5 causes the death of neurons, leading to neurodegenerative diseases. | ||
Deregulation of Cdk5 has been implicated in Alzheimer’s disease, amyotrophic lateral sclerosis, Parkinson’s disease, Huntington’s disease and acute neuronal injury. Regulators of Cdk5 activity are considered as potential therapeutic molecules for degenerative diseases. | Deregulation of Cdk5 has been implicated in Alzheimer’s disease, amyotrophic lateral sclerosis, Parkinson’s disease, Huntington’s disease and acute neuronal injury. Regulators of Cdk5 activity are considered as potential therapeutic molecules for degenerative diseases. | ||
Sometimes, p35, the activator of Cdk5, is cleaved in p25 by a protease calcium-dependent, the calpain. This cut form of p35 (p25) is able to activate Cdk5 and to trigger a modification of its cellular localization. It can increase its activity too. In Alzheimer’s disease or in the amyotrophic lateral sclerosis, when the ratio of p25 over p35 increases, it creates an hyperactivity of Cdk5 which could hyperphosphorylate the protein Tau.<ref>DOI 10.1007/s10571-007-9242-1</ref> | Sometimes, p35, the activator of Cdk5, is cleaved in p25 by a protease calcium-dependent, the calpain. This cut form of p35 (p25) is able to activate Cdk5 and to trigger a modification of its cellular localization. It can increase its activity too. In Alzheimer’s disease or in the amyotrophic lateral sclerosis, when the ratio of p25 over p35 increases, it creates an hyperactivity of Cdk5 which could hyperphosphorylate the protein Tau.<ref>DOI 10.1007/s10571-007-9242-1</ref> | ||
==References== | ==References== | ||
<references /> | <references /> | ||
