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The initiation of the activity of the inactive enzyme MAP kinase by phosphorylation by a MAPKK. Any process that activates or increases the frequency, rate or extent of MAP kinase activity. A cascade of at least three protein kinase activities culminating in the phosphorylation and activation of a MAP kinase. MAPKKK cascades lie downstream of numerous signaling pathways. A cascade of protein kinase activities, culminating in the phosphorylation and activation of a member of the JUN kinase subfamily of stress-activated protein kinases, which in turn are a subfamily of mitogen-activated protein (MAP) kinases that is activated primarily by cytokines and exposure to environmental stress. Any process that modulates the frequency, rate or extent of JUN kinase activity. The process of introducing a phosphate group on to a protein. Any process that activates or increases the frequency, rate or extent of JUN kinase activity. The initiation of the activity of the inactive enzyme JUN kinase by phosphorylation by a JUN kinase kinase (JNKK). A series of molecular signals in which a stress-activated protein kinase (SAPK) cascade relays one or more of the signals.

View Gene Ontology (GO) Term

GO TERM SUMMARY
Name: activation of JUN kinase activity
Acc: GO:0007257
Aspect: Biological Process
Desc: The initiation of the activity of the inactive enzyme JUN kinase by phosphorylation by a JUN kinase kinase (JNKK).
Synonyms:
  • activation of SAPK activity
Proteins in PDR annotated with:
   This term: 31 [Search]
   Term or descendants: 31 [Search]


[geneontology.org]
INTERACTIVE GO GRAPH

GO:0007257 - activation of JUN kinase activity (interactive image map)
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