Abstract:
:Protein phosphorylation is a key regulatory mechanism of the organization and dynamics of the actin cytoskeleton during cell motility, differentiation, and cytokinesis. The level of protein phosphorylation is dependent on the relative activities of both protein kinases and protein phosphatases. In this paper, we examined the effect of phoslactomycins (PLMs) on the regulation of the cytoskeleton of NIH/3T3 fibroblasts. Treatment of cells with PLM-F (10 microM) induced actin filament depolymerization after 4 h. This effect was reversible and actin filaments were reformed 1 h after removal of the inhibitors. As PLM-F had no effect at all on polymerization of purified actin in vitro, it is thought that PLMs induce actin depolymerization through an indirect mechanism. An in vitro assay showed PLMs inhibited protein phosphatase 2A at lower concentrations (IC50 4.7 microM) than protein phosphatase 1. An in situ phosphorylation assay also revealed that PLM-F treatment stimulated the phosphorylation of intracellular vimentin. These results suggest that phoslactomycins are protein phosphatase 2A-specific inhibitors and that protein phosphatase 2A is involved in regulation of the organization of the actin cytoskeleton.
journal_name
J Biochemjournal_title
Journal of biochemistryauthors
Usui T,Marriott G,Inagaki M,Swarup G,Osada Hdoi
10.1093/oxfordjournals.jbchem.a022375keywords:
subject
Has Abstractpub_date
1999-05-01 00:00:00pages
960-5issue
5eissn
0021-924Xissn
1756-2651journal_volume
125pub_type
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journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/oxfordjournals.jbchem.a124787
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journal_title:Journal of biochemistry
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更新日期:1999-06-01 00:00:00
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更新日期:1998-07-01 00:00:00
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journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/oxfordjournals.jbchem.a134826
更新日期:1984-07-01 00:00:00
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journal_title:Journal of biochemistry
pub_type: 杂志文章,评审
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更新日期:1994-04-01 00:00:00
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pub_type: 杂志文章
doi:10.1093/oxfordjournals.jbchem.a134657
更新日期:1984-03-01 00:00:00
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journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/oxfordjournals.jbchem.a122756
更新日期:1989-05-01 00:00:00
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journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/oxfordjournals.jbchem.a123081
更新日期:1990-04-01 00:00:00
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pub_type: 杂志文章,评审
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更新日期:2013-12-01 00:00:00
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journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/oxfordjournals.jbchem.a123232
更新日期:1990-10-01 00:00:00
abstract::In this report, we describe a laser-latex combination system that enables membrane-impermeable molecules to penetrate cell membranes. Laser light (Q-switched Nd:YAG laser, 532.5 nm) was used to irradiate a mixture of commercial latex particles (blue dyed, 1 micro m in diameter) and mouse fibrosarcoma (Meth-A) cells. A...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/jb/mvg132
更新日期:2003-08-01 00:00:00
abstract::Previous studies have shown that purified mitochondrial outer membrane is able to catalyze the transfer of sialic acid from CMP-Neu5Ac to an exogenous asialoglycoprotein acceptor, asialofetuin. Considering the heterogeneity of the glycan chains borne by this glycoprotein, an investigation of mitochondrial sialyltransf...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/oxfordjournals.jbchem.a123644
更新日期:1991-11-01 00:00:00
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journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/oxfordjournals.jbchem.a123764
更新日期:1992-03-01 00:00:00
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journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/jb/mvy069
更新日期:2018-12-01 00:00:00
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journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/oxfordjournals.jbchem.a133070
更新日期:1980-10-01 00:00:00
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journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/jb/mvt065
更新日期:2013-09-01 00:00:00
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journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/oxfordjournals.jbchem.a131458
更新日期:1977-02-01 00:00:00
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journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/oxfordjournals.jbchem.a131919
更新日期:1978-02-01 00:00:00
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更新日期:1978-12-01 00:00:00
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pub_type: 杂志文章
doi:10.1093/oxfordjournals.jbchem.a133775
更新日期:1982-03-01 00:00:00
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更新日期:2014-10-01 00:00:00
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journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:
更新日期:1975-07-01 00:00:00
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journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/oxfordjournals.jbchem.a123069
更新日期:1990-03-01 00:00:00
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journal_title:Journal of biochemistry
pub_type: 杂志文章
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更新日期:2005-12-01 00:00:00
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journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/oxfordjournals.jbchem.a132683
更新日期:1979-12-01 00:00:00
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journal_title:Journal of biochemistry
pub_type: 杂志文章
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更新日期:2000-05-01 00:00:00
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journal_title:Journal of biochemistry
pub_type: 杂志文章
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更新日期:1999-02-01 00:00:00
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journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/oxfordjournals.jbchem.a022009
更新日期:1998-05-01 00:00:00
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journal_title:Journal of biochemistry
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更新日期:2011-08-01 00:00:00
abstract::A soluble enzyme preparation (20,000 X g supernatant fraction), prepared from the mycelia of wild-type Neurospora crassa, was capable of transferring [14C]glucose from UDP-[14C]glucose into both trichloroacetic acid (TCA)-soluble and TCA-insoluble macromolecule products in the absence of added primer. These reactions ...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/oxfordjournals.jbchem.a131617
更新日期:1977-06-01 00:00:00