JUN kinase phosphatase activity

Catalysis of the reaction: JUN kinase serine/threonine/tyrosine phosphate + H2O = JUN kinase serine/threonine/tyrosine + phosphate.

JUN kinase activity

Catalysis of the reaction: JUN + ATP = JUN phosphate + ADP. This reaction is the phosphorylation and activation of members of the JUN family, a gene family that encodes nuclear transcription factors.

JUN kinase binding

Binding to JUN kinase, an enzyme that catalyzes the phosphorylation and activation of members of the JUN family.

JUN phosphorylation

The process of introducing a phosphate group into a JUN protein.

JUN kinase kinase kinase kinase activity

Catalysis of the phosphorylation and activation of JUN kinase kinase kinases (JNKKKs).

obsolete activation of JUN kinase activity

OBSOLETE. The initiation of the activity of the inactive enzyme JUN kinase (JNK).

NAD biosynthetic process via the salvage pathway

Any process that generates nicotinamide adenine dinucleotide (NAD) from vitamin B3 derivatives, including nicotinic acid (NA) and nicotinamide (NAM), or from beta-nicotinamide D-ribonucleotide (NMN), nicotinamide riboside (NR) or nicotinate riboside (NAR), without de novo synthesis.

regulation of JUN kinase activity

Any process that modulates the frequency, rate or extent of JUN kinase activity.

JUN kinase kinase activity

Catalysis of the phosphorylation of tyrosine and threonine residues in a c-Jun NH2-terminal kinase (JNK), a member of a subgroup of mitogen-activated protein kinases (MAPKs), which signal in response to cytokines and exposure to environmental stress. JUN kinase kinase (JNKK) is a dual-specificity protein kinase kinase and requires activation by a serine/threonine kinase JUN kinase kinase kinase.

positive regulation of JUN kinase activity

Any process that activates or increases the frequency, rate or extent of JUN kinase activity.