Summary

Name PAK3
Full Name Serine/threonine-protein kinase PAK 3
Synonyms Beta-PAK, Oligophrenin-3, p21-activated kinase 3, PAK-3 | OPHN3
Primary ID O75914
Links - -
Type protein
Relations 9
Function Serine/threonine protein kinase that plays a role in a variety of different signaling pathways including cytoskeleton regulation, cell migration, or cell cycle regulation. Plays a role in dendrite spine morphogenesis as well as synapse formation and plasticity. Acts as downstream effector of the small GTPases CDC42 and RAC1. Activation by the binding of active CDC42 and RAC1 results in a conformational change and a subsequent autophosphorylation on several serine and/or threonine residues. Phosphorylates MAPK4 and MAPK6 and activates the downstream target MAPKAPK5, a regulator of F-actin polymerization and cell migration. Additionally, phosphorylates TNNI3/troponin I to modulate calcium sensitivity and relaxation kinetics of thin myofilaments. May also be involved in early neuronal development.

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Modifications Tables

Relations

Regulator Mechanism target score
+ down-regulates img/direct_inhibition.png phosphorylation TNNI3 0.2
Publications: 1 Organism: Homo Sapiens
Tissue: Muscle
+ img/unknown.png phosphorylation TNNI3 0.2
Publications: 1 Organism: Homo Sapiens
Tissue: Muscle
+ up-regulates activity img/direct-activation.png phosphorylation PAK3 0.2
Publications: 1 Organism: In Vitro
+ up-regulates img/direct-activation.png phosphorylation RAF1 0.535
Publications: 1 Organism: Homo Sapiens
+ up-regulates activity img/direct-activation.png phosphorylation SYN1 0.339
Publications: 1 Organism: Rattus Norvegicus
+ down-regulates img/direct_inhibition.png phosphorylation CALD1 0.2
Publications: 2 Organism: Homo Sapiens
Tissue: Muscle, Smooth Muscle
+ down-regulates activity img/direct_inhibition.png phosphorylation SORT1 0.2
Publications: 1 Organism: Homo Sapiens
+ up-regulates activity img/direct-activation.png phosphorylation MYO6 0.341
Publications: 1 Organism: In Vitro