• Calcineurin (CN) is a Ca 2+ /calmodulin dependent serine/threonine protein phosphatase first identified in brain and also known as protein phosphatase 2B (PP2B). (pancreapedia.org)
  • Calcineurin (Cn) is a Ca 2+ /calmodulin (CaM)-dependent serine/threonine phosphatase first identified in extracts of mammalian brain (68, 94). (pancreapedia.org)
  • CnA ( Figure 1 ) contains the catalytic domain, which is homologous to other serine/threonine protein phosphatases (4). (pancreapedia.org)
  • A group of enzymes removing the SERINE- or THREONINE-bound phosphate groups from a wide range of phosphoproteins, including a number of enzymes which have been phosphorylated under the action of a kinase. (rush.edu)
  • Serine-threonine protein phosphatase regulation of Cx43 dephosphorylation in arrhythmogenic disorders. (rush.edu)
  • Kobayashi N, Reiser J, Schwarz K, Sakai T, Kriz W, Mundel P. Process formation of podocytes: morphogenetic activity of microtubules and regulation by protein serine/threonine phosphatase PP2A. (rush.edu)
  • Cyclin-dependent kinase 5 (Cdk5) is a member of the Cdk family of serine/threonine kinases and is abundantly expressed in the brain ( Dhavan and Tsai, 2001 ). (frontiersin.org)
  • A unique isoform of the catalytic subunit of calmodulin-dependent protein phosphatase (CaM-PrP) was cloned from a murine testis library. (elsevierpure.com)
  • Protein Phosphatase 2A (PP2A) is a widely expressed family of protein phosphatases made of a core dimer, composed of a catalytic (C) subunit and a structural (A) subunit, in association with a third variable regulatory (B) subunit. (ac.be)
  • Both Northern and Western blot analyses confirmed the increased expression of one of the cDNA species identified as coding for the catalytic subunit of protein phosphatase 2A (PP2A), an observation not previously reported during the response to a growth factor. (edu.au)
  • citation needed] PTPs (protein tyrosine phosphatases) that catalyse the hydrolysis of an inorganic phosphate from a phosphotyrosine residue (the reverse of a tyrosine kinase reaction) contain a motif which folds into a P-loop-like structure with an arginine in the place of the conserved lysine. (wikipedia.org)
  • Activation loop Autophosphorylation Ca2+/calmodulin-dependent protein kinase Cell signaling Cyclin-dependent kinase G protein-coupled receptor Nucleoside-diphosphate kinase Phosphatase Phosphatidylinositol phosphate kinases Phospholipid Phosphoprotein Phosphorylation Phosphotransferase Signal transduction Thymidine kinase Thymidine kinase in clinical chemistry Thymidylate kinase Wall-associated kinase Walker JE, Saraste M, Runswick MJ, Gay NJ (1982). (wikipedia.org)
  • Here DARPP-32 phosphorylation by protein kinase A (PKA), DARPP-32 into a powerful protein phosphatase 1 (PP1) inhibitor. (pp1a.com)
  • DARPP-32 can itself inhibit the following PKA DARPP-32 phosphorylation by cyclin-dependent kinase 5 (Cdk5). (pp1a.com)
  • Although intracellular signal transduction is often portrayed as a protein kinase 'domino effect', the counterbalancing function of phosphatases, and thus the control of phosphatase activity, is equally relevant to proper regulation of cellular function. (ac.be)
  • P-sites 2 and 3 phosphorylated by Ca2+ calmodulin-dependent protein kinase II) were excellent substrates for protein phosphatase 2A, whereas P-sites 4, 5, and 6 (phosphorylated by mitogen-activated protein kinase) were efficiently dephosphorylated only by Ca2+-calmodulin-dependent protein phosphatase 2B-calcineurin. (ucl.ac.uk)
  • cyclin dependent kinase. (gsea-msigdb.org)
  • Glutamate inputs activate cyclin-dependent kinase 5 (Cdk5), which inhibits postsynaptic dopamine signaling by phosphorylating DARPP-32 (dopamine- and cAMP-regulated phosphoprotein, 32 kDa) at Thr75 in the striatum. (frontiersin.org)
  • Glutamate inputs activate Cdk5, which inhibits postsynaptic dopamine D1 receptor (D1R)-mediated signaling by phosphorylating DARPP-32 at Thr75 (Thr75-DARPP-32) in the striatum, since DARPP-32 with Thr75 phosphorylation (DARPP-32-pThr75) functions as an inhibitor of cAMP-dependent protein kinase A (PKA). (frontiersin.org)
  • We found that Homer3, the predominant isoform in Purkinje cells, is phosphorylated by calcium/calmodulin-dependent protein kinase II (CaMKII) both in vitro and in vivo . (jneurosci.org)
  • In this study, we revealed that Homer3 was phosphorylated by calcium/calmodulin-dependent protein kinase II (CaMKII) in Purkinje cells, and the phosphorylation reduces the affinity for Homer target molecules, resulting in change of the solubility. (jneurosci.org)
  • Surprisingly, in the light of previous studies with other cells, the PP2A-dependent proliferation could be dissociated from activation by extracellular signal-regulated protein kinase (ERK) in macrophages because OA did not affect either the basal or CSF-1-induced ERK activity in BMM. (edu.au)
  • Furthermore, phosphoproteomic data and signalome analysis of perihematomal brain tissues suggested that calmodulin-dependent protein kinases 2 (CAMK2A) kinase substrate pairs were significantly downregulated in ICH with HHcy compared with autologous blood injection only, both western blot and immunofluorescence staining confirmed this finding. (bmj.com)
  • 2005. Ca2+/calmodulin-dependent protein kinase modulates cardiac ryanodine receptor phosphorylation and sarcoplasmic reticulum Ca2+ leak in heart failure. (badrilla.com)
  • 2 Protein phosphatase 2A (PP2A) is a very abundant - it accounts for as much as 1% of total cellular proteins - ubiquitous and remarkably conserved enzyme. (ac.be)
  • PP2A and PP1, but not Cn, are inhibited by the exogenously administered phosphatase inhibitors okadaic acid, microcystin, and calyculin, as well as the endogenous inhibitors inhibitor-1 and DARPP-32 (dopamine- and cAMP-regulated phosphoprotein of 32 kDa). (pancreapedia.org)
  • In the striatum, Cdk5 plays a regulatory role in the dopamine and glutamate transmissions that are integrated by DARPP-32 (dopamine- and cAMP-regulated phosphoprotein, 32 kDa) ( Greengard, 2001 ). (frontiersin.org)
  • Nouvelles avancées dans la structure et la régulation de la Protéine Phosphatase 2A : les raisons pour lesquelles PP2A ne doit plus être considérée comme une enzyme passive et non spécifique. (ac.be)
  • La Protéine Phosphatase 2A (PP2A) est une phosphatase très abondante composée d'un noyau dimérique contenant une sous-unité catalytique (C) et une sous-unité structurale (A), auquel est associé une sous-unité régulatrice (B) variable. (ac.be)
  • Bien que considérée dans le passé comme une enzyme constitutive non spécifique, PP2A est une phosphatase soumise à une régulation précise et qui est importante dans le contrôle des fonctions cellulaires impliquant la phosphorylation. (ac.be)
  • Although viewed as a constitutive housekeeping enzyme in the past, PP2A is a highly regulated phosphatase and is emerging as an important regulator of multiple cellular processes involving protein phosphorylation. (ac.be)
  • Cn (also known as PP2B) is part of a family of type 2 protein phosphatases that include PP2A and PP2C. (pancreapedia.org)
  • To determine the significance of the increased expression of PP2A in response to CSF-1, the PP2A inhibitor okadaic acid (OA) was added to CSF-1-treated BMM and found to inhibit DNA synthesis in a dose-dependent manner. (edu.au)
  • By acting as a ligand-dependent transcription factor of the glucocorticoid receptor (GR) mediates the action of glucocorticoids and regulates many physiological processes. (pp1a.com)
  • These Ly-49 inhibitory receptors, as well as inhibitory KIRs, contain cytoplasmic immune receptor tyrosine-based inhibitory motifs (ITIMs) that are phosphorylated upon stimulation, leading to the recruitment of Src homology 2 domain-containing protein tyrosine phosphatase (SHP-1) and attenuation of intracellular signals ( 1 , 4 , 5 ). (aai.org)
  • Nucleic acid-dependent ATPases: helicases, Swi2, and PhoH (InterPro: IPR003714) AAA proteins STAND NTPases including MJ, PH, AP, and NACHT ATPases ABC-PilT ATPases Nucleotide kinases (InterPro: IPR000850) G domain proteins: G-proteins (transducin), myosin. (wikipedia.org)
  • Dopamine and cyclic-AMP activated Mr32kDa phosphoprotein (DARPP-32) is a central signaling proteins in neurotransmission. (pp1a.com)
  • This gene encodes one of three calmodulin proteins which are members of the EF-hand calcium-binding protein family. (nih.gov)
  • In cardiac hypertrophy, phosphorylation-dependent functional modulation of proteins, especially sarcoplasmic reticulum (SR) and sarcomere proteins, has been demonstrated. (molcells.org)
  • As it binds calcium, calmodulin undergoes conformational changes which can increase its affinity for target proteins. (thermofisher.com)
  • ICA69 regulates activity-dependent synaptic strengthening and learning and memory. (neurotree.org)
  • Calcium-induced activation of calmodulin regulates and modulates the function of cardiac ion channels. (nih.gov)
  • 2004. Ouabain treatment is associated with upregulation of phosphatase inhibitor-1 and Na+/Ca2+-exchanger and beta-adrenergic sensitization in rat hearts. (badrilla.com)
  • 2008. Inhibition of protein phosphatase 1 by inhibitor-2 exacerbates progression of cardiac failure in a model with pressure overload. (badrilla.com)
  • Inhibition of calcineurin activity by cyclosporin A resulted in a complete block of Ca2+-dependent dephosphorylation of P-sites 4, 5, and 6 and correlated with a prominent increase in ionomycin-evoked glutamate release. (ucl.ac.uk)
  • The aspartic acid mutation of CaD22 weakened Ca2+-calmodulin binding but had no effect on inhibition of ATPase activity. (gabasignaling.com)
  • Etomoxir Phosphorylation of these sites of the alanine mutant of CaD22 had no effect on Ca2+-calmodulin binding but did reduce inhibition of ATPase activity. (gabasignaling.com)
  • In isolated nerve terminals, rapid changes in synapsin I phosphorylation were observed after Ca2+ entry, namely, a Ca2+-dependent phosphorylation of P-sites 1, 2, and 3 and a Ca2+-dependent dephosphorylation of P-sites 4, 5, and 6. (ucl.ac.uk)
  • Connexin 43 downregulation and dephosphorylation in nonischemic heart failure is associated with enhanced colocalized protein phosphatase type 2A. (rush.edu)
  • Thus, the two substrates of this enzyme are ATP and a protein , whereas its two products are ADP and phosphoprotein . (cloudfront.net)
  • In the past, most of the attention was focused primarily on protein kinases and on their regulation, mainly because phosphatases were then viewed as simple housekeeping enzymes. (ac.be)
  • But advances in the understanding of protein phosphatases make now clear that these enzymes are precisely regulated and are as important as kinases in the regulation of cellular processes involving protein phosphorylation. (ac.be)
  • Then, our findings further indicate that Hcy significantly downregulates the phosphorylation level of calmodulin-dependent protein kinases 2 (CAMK2A) after ICH, which is associated with neurite outgrowth. (bmj.com)
  • Pahan K, Sheikh FG, Namboodiri AM, Singh I. Inhibitors of protein phosphatase 1 and 2A differentially regulate the expression of inducible nitric-oxide synthase in rat astrocytes and macrophages. (rush.edu)
  • Cn consists of two subunits, CnA and CnB, which form a heterodimer in order to conduct phosphatase activity. (pancreapedia.org)
  • Regulation of cardiac gap junctions by protein phosphatases. (rush.edu)
  • Synapsins are major neuronal phosphoproteins involved in regulation of neurotransmitter release. (ucl.ac.uk)
  • Studies have found that calmodulin participates in the regulation of several biological processes including energy and biosynthetic metabolism, cell motility, exocytosis, cytoskeletal assembly, and intracellular modulation of both cAMP and calcium concentrations. (thermofisher.com)
  • An in vitro binding kinetic analysis revealed that these phosphorylation-dependent events were attributable to a decrease in the affinity of phosphorylated Homer3 for its ligand. (jneurosci.org)
  • This study found an increase in excess GR transcriptional activity of protein phosphatase 1 alpha (PP1α) in HEK-293 cells and a decrease in the expression levels of GR-responsive gene knockdown following PP1α model A549 cells endogenously . (pp1a.com)
  • The gene Protein phosphatase 1 at 87B is referred to in FlyBase by the symbol Dmel\Pp1-87B (CG5650, FBgn0004103). (yeastrc.org)
  • These two opposing, rapid, Ca2+-dependent processes may play a crucial role in the modulation of synaptic vesicle trafficking within the presynaptic terminal. (ucl.ac.uk)
  • Calmodulin variant E140G associated with long QT syndrome impairs CaMKIIδ autophosphorylation and L-type calcium channel inactivation. (nih.gov)
  • Subtype Differences in the Interaction of HIV-1 Matrix with Calmodulin: Implications for Biological Functions. (nih.gov)
  • Protein phosphatase activity is increased in a rat model of long-term beta-adrenergic stimulation. (badrilla.com)
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