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LIM domain kinase 1
There are approximately 40 known eukaryotic LIM proteins, so named for the LIM domains they contain. LIM domains are highly conserved cysteine-rich structures containing 2 zinc fingers. Although zinc fingers usually function by binding to DNA or RNA, the LIM motif probably mediates protein-protein interactions. LIM kinase-1 and LIM kinase-2 belong to a small subfamily with a unique combination of 2 N-terminal LIM motifs and a C-terminal protein kinase domain. LIMK1 is a serine/threonine kinase that regulates actin polymerization via phosphorylation and inactivation of the actin binding factor cofilin. This protein is ubiquitously expressed during development and plays a role in many cellular processes associated with cytoskeletal structure. This protein also stimulates axon growth and may play a role in brain development. LIMK1 hemizygosity is implicated in the impaired visuospatial constructive cognition of Williams syndrome. Alternative splicing results in multiple transcript variants encoding distinct isoforms.[provided by RefSeq, Feb 2011] (from
Yang et al., Tianjin, China. In Tumour Biol, 05 Feb 2016
also inhibited cells adhesion and actin polymerization through attenuating the phosphorylations of integrin β1, LIMK, and cofilin, which might be the downstream effectors of PKC ζ-mediated chemotaxis in MDA-MB-231 cells.
Mizobuchi et al., Kōbe, Japan. In Paediatr Anaesth, 31 Jan 2016
The mRNA expression levels of caspase-3, brain derived neurotrophic factor (BDNF), nerve growth factor (NGF), and LIM kinase-1 (LIMK-1) were measured in fetal whole brain and 8-week-old hippocampus sections.
Natarajan et al., Frederick, United States. In Bmc Mol Biol, 2010
Data describe the role of LIMK1-mediated CFL1 pathway and actin dynamics in retinoid receptor mediated function and show that LIMK1-mediated phosphocycling of CFL1 plays a role in maintaining actin homeostasis and receptor activity.
demonstrated that LIMK1, a key regulator of actin cytoskeleton, was overexpressed at both mRNA and protein levels in MG63/VCR cells and the higher LIMK1 protein level was correlated with higher level of phosphorylated cofilin