細胞定位 |
Antigen Cellular Localization:
Cytoplasm. Cell membrane; Peripheral membrane protein. Nucleus. Cytoplasm, cytoskeleton, microtubule organizing center, centrosome Note=Cytoplasmic, and associated with actin microfilaments and the plasma membrane.
|
功能 |
Protein kinase which is a key regulator of actin cytoskeleton and cell polarity. Involved in regulation of smooth muscle contraction, actin cytoskeleton organization, stress fiber and focal adhesion formation, neurite retraction, cell adhesion and motility via phosphorylation of ADD1, BRCA2, CNN1, EZR, DPYSL2, EP300, MSN, MYL9/MLC2, NPM1, RDX, PPP1R12A and VIM. Phosphorylates SORL1 and IRF4. Acts as a negative regulator of VEGF-induced angiogenic endothelial cell activation. Positively regulates the activation of p42/MAPK1-p44/MAPK3 and of p90RSK/RPS6KA1 during myogenic differentiation. Plays an important role in the timely initiation of centrosome duplication. Inhibits keratinocyte terminal differentiation. May regulate closure of the eyelids and ventral body wall through organization of actomyosin bundles. Plays a critical role in the regulation of spine and synaptic properties in the hippocampus. Plays an important role in generating the circadian rhythm of the aortic myofilament Ca(2+) sensitivity and vascular contractility by modulating the myosin light chain phosphorylation.
|
總結 |
Rho-associated protein kinase 2 (ROCK2), or Rho kinase alpha, is a serine-threonine protein kinase that plays an important role in cellular apoptosis, growth, cell motility and cell contraction. ROCK2 shares an overall 65% homology in amino acid sequence with ROCK1. The ROCK1 and ROCK2 isoforms are products of two separate genes. Both ROCK1 and ROCK2 are downstream targets of the Rho A small GTP-binding protein. As downstream effectors of RhoA, ROCK1 and ROCK2 mediate changes in the actin cytoskeleton via phosphorylation of target proteins such as the MBS subunit of MLCP, MLC, ERM proteins, protein LIM kinase and adducin.
|