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Calcineurin A and B Calcineurin is a Ca/calmodulin-dependent serine-threonine phosphatase that plays an important role in transducing Ca-dependent signals in a variety of cell types. It is a heterodimers of two subunits: Calcineurin B/CnB, the 19-kda Ca+-binding and regulatory subunit, and Calcineurin A/CnA, ~61-kda catalytic subunit that is highly homologous with PP1 and PP2A. Calcineurin mediated dephosphorylation of the nuclear factor of activated T-cells (NF-AT) is required for NF-AT activation, nuclear translocation, and subsequent gene expression in T-cells. www.gencompare.com /calcineurin_a_and_b.htm   (705 words)

Cancer Cell International | Full text | Downregulation of calcineurin activity in cervical carcinoma Calcineurin is a heterodimeric protein consisting of a catalytic subunit (calcineurin A), with an active metal binding centre, and a regulatory subunit (calcineurin B), which binds to calcium [19]. Calcineurin is involved in a wide variety of biological responses including neuronal and muscle development, neurite outgrowth, morphogenesis of vertebrate heart valves, memory development, behavioral response etc [21-26]. Calcineurin activity was assayed in both sera and tissue lysate by measuring the dephosphorylation of RII peptide, a specific substrate of calcineurin. www.cancerci.com /content/5/1/7   (4262 words)

Comparison of the Roles of Calcineurin in Physiology and Virulence in Serotype D and Serotype A Strains of Cryptococcus ... Calcineurin is a Ca -calmodulin-activated phosphatase with catalytic and regulatory subunits (10). Calcineurin is required for virulence of serotype A and serotype D strains in mice. Calcineurin is required for virulence of serotype D and serotype A strains in both rabbits and mice. iai.asm.org /cgi/content/full/68/2/982   (2404 words)

Calcineurin - Wikipedia, the free encyclopedia Calcineurin (CN) is a protein phosphatase also known as protein phosphatase 2B (PP2B). Calcineurin induces different transcription factors that are important in the transcription of IL-2 genes. Scientist believe that calcineurin might prove to be one of the two keys, along with NFAT, in improving the function of diabetics' pancreatic beta cells. en.wikipedia.org /wiki/Calcineurin   (218 words)

Calcineurin: a central controller of signalling in eukaryotes Calcineurin is a serine- and threonine-specific protein phosphatase that is conserved in all eukaryotes and is unique among phosphatases for its ability to sense Ca through its activation by calmodulin. Calcineurin B is essential for enzyme activity, drug binding and activation by calmodulin. Calcineurin and NFATc proteins are crucial for the function of cortical and hippocampal neurons in which synaptic activity results in Ca influx through L-type channels and N-methyl-D-aspartate (NMDA) receptors (Graef et al, 1999). www.nature.com /embor/journal/v5/n4/full/7400133.html   (4402 words)

ION TRANSPORT antibodies ( CALCINEURIN ) available from Research Diagnostics Inc   (Site not responding. Last check: 2007-10-03) Background: Calcineurin is a CA2+/calmodulin dependent protein phosphatase. Calcineurin dephosphorylates protein kinase C mediated phosphorylation of NOS. Calcineurin appears to be an essential mediator of one signal through which antigen stimulation of the T cell antigen receptor (TcR) leads to the activation of T cells. www.researchd.com /rdiabs/calcin.htm   (323 words)

Calcineurin Is Required for Candida albicans To Survive Calcium Stress in Serum -- Blankenship and Heitman 73 (9): 5767 ... as a strain marker-matched to the calcineurin mutant and reconstituted Calcineurin is important for the response to stress induced by Ca in serum. Calcineurin is essential for Candida albicans survival in serum and virulence. iai.asm.org /cgi/content/full/73/9/5767   (4883 words)

Atrogin-1/muscle atrophy F-box inhibits calcineurin-dependent cardiac hypertrophy by participating in an SCF ubiquitin ... -actinin-2 and calcineurin A in GST pull-down assays. The ability of the various calcineurin A fusion proteins to bind to atrogin-1 expressed as a Myc-tagged fusion in COS-7 cells was analyzed by blotting with Myc antibody (bottom). F-box mutant, or the 1–284 mutant, and calcineurin A ubiquitination was examined by immunoblotting. www.jci.org /cgi/content/full/114/8/1058   (7301 words)

Ca2+-Dependent Interaction between FKBP12 and Calcineurin Regulates Activity of the Ca2+ Release Channel in Skeletal ... Calcineurin is a Ca and calmodulin-dependent protein phosphatase with diverse cellular functions. 1881 to 2173 of cain, an endogenous inhibitor of calcineurin. Calcineurin activity is required for the initiation of skeletal muscle differentiation. www.biophysj.org /cgi/content/full/83/5/2539   (5318 words)

[5] NFAT, Calcineurin and Immunosuppression If calcineurin is inhibited, the immune response will be suppressed. Calcineurin: a central controller of signalling in eukaryotes - EMBO Report, 2004. Regulation of the Calmodulin-stimulated Protein Phosphatase, Calcineurin - J. Biol. www.web-books.com /MoBio/Free/Ch5B3.htm   (319 words)

Calcineurin initiates smooth muscle differentiation in neural crest stem cells -- Mann et al. 165 (4): 483 -- The ... Calcineurin, a serine/threonine protein phosphatase, is activated by calcium and calmodulin after intracellular calcium levels are elevated for a sustained period of time. Activation of the calcineurin signaling pathway increases the SMC fraction of an NCSC population, and inhibition of the calcineurin signaling pathway decreases the SMC fraction of an NCSC population Note that the NCSCs in the calcineurin plot that express the highest GFP levels, and therefore presumably the highest calcineurin levels, are almost uniformly smooth muscle. www.jcb.org /cgi/content/full/165/4/483   (5924 words)

Identification of a Calcineurin-Independent Pathway Required for Sodium Ion Stress Response in Saccharomyces cerevisiae ... in a signaling pathway that is distinct from the calcineurin of calcineurin or downstream of calcineurin in a branched pathway. Calcineurin and Std1p function in distinct ion stress response pathways. www.genetics.org /cgi/content/full/150/1/31   (6592 words)

Deletion of Calcineurin and Myocyte Enhancer Factor 2 (MEF2) Binding Domain of Cabin1 Results in Enhanced Cytokine Gene ... Calcineurin is a common target of cyclophilin-cyclosporin A and FKBP-FK506 complexes. Calcineurin phosphatase activity in T lymphocytes is inhibited by FK 506 and cyclosporin A. Proc. Calcineurin enhances MEF2 DNA binding activity in calcium-dependent survival of cerebellar granule neurons. www.jem.org /cgi/content/full/194/10/1449   (5830 words)

BioCarta - Charting Pathways of Life Intracellular calcium alters multiple signaling pathways, one of which is binding to calmodulin to activate the serine-threonine protein phosphatase calcineurin. Calcineurin dephosphorylates and activates the transcription factor NFAT and both calcineurin and NFAT are expressed in differentiating keratinocytes. Cross talk among calcineurin, Sp1/Sp3, and NFAT in control of p21^WAF1/CIP1 expression in keratinocyte differentiation. www.biocarta.com /pathfiles/h_calcineurinPathway.asp   (421 words)

Chemicon - Product #AB1699 - Anti-Calcineurin B alpha [CnBalpha] Calcineurin is a Ser/Thr, calcium and calmodulin-dependent protein phosphatase that plays an essential role in the T cell activation pathway. Calcineurin (also referred to as protein phosphatase 2B) is composed of two subunits; calcineurin A (CnA), a 60 kDa catalytic subunit which is highly homologous to protein phosphatases 1 and 2A; and a 19 kDa regulatory subunit, calcineurin B (CnB) which, like calmodulin, contains four EF-hand calcium binding sites. CnBalpha is the predominant gene for the regulatory subunit of calcineurin in most tissues. www.chemicon.com /browse/productdetail.asp?ProductID=AB1699   (404 words)

Calcineurin-Nuclear Factor of Activated T Cells Pathway-Dependent Cardiac Remodeling in Mice Deficient in Guanylyl ... calcineurin is activated in cardiac myocytes of GCA-KO mice. Calcineurin activation was involved in increased mRNA expression associated with cardiac remodeling in GCA-KO mice. Calcineurin activation causes nuclear localization of NFAT transcription factors by dephosphorylation. circ.ahajournals.org /cgi/content/full/111/23/3095   (4681 words)

Cryptococcus neoformans Isolates from Transplant Recipients Are Not Selected for Resistance to Calcineurin Inhibitors ...   (Site not responding. Last check: 2007-10-03) inhibition by calcineurin inhibitors at 37 to 39°C (26). Calcineurin regulatory subunit is essential for virulence and mediates interactions with FKBP12-FK506 in Cryptococcus neoformans. Calcineurin phosphatase activity in T lymphocytes is inhibited by FK506 and cyclosporin A. Proc. jcm.asm.org /cgi/content/full/43/1/464   (1969 words)

An emerging role for calcineurin A{alpha} in the development and function of the kidney -- Gooch 290 (4): F769 -- AJP - ... An emerging role for calcineurin A{alpha} in the development and function of the kidney -- Gooch 290 (4): F769 -- AJP - Renal Physiology Calcineurin inhibition interferes with T cell signaling by preventing calcineurin action in T cells without associated nephrotoxicity. ajprenal.physiology.org /cgi/content/abstract/290/4/F769   (283 words)

Ion Tolerance of Saccharomyces cerevisiae Lacking the Ca2+/CaM-Dependent Phosphatase (Calcineurin) Is Improved by ... Ion Tolerance of Saccharomyces cerevisiae Lacking the Ca2+/CaM-Dependent Phosphatase (Calcineurin) Is Improved by Mutations in URE2 or PMA1 -- Withee et al. Although calcineurin is required for tolerance to Na, Li and Mn, it does not affect resistance to all cations. Calcineurin is required to maintain viability during prolonged www.genetics.org /cgi/content/full/149/2/865   (6639 words)

Identification of a peptide fragment of DSCR1 that competitively inhibits calcineurin activity in vitro and in vivo -- ... Calcineurin is a heterodimer composed of CnA (60 kDa) and CnB Calcineurin activity is regulated by two immunosuppressant drugs. is dephosphorylated by calcineurin, and interference with this www.pnas.org /cgi/content/full/102/37/13075   (3731 words)

Calcineurin Triggers Reactive/Inflammatory Processes in Astrocytes and Is Upregulated in Aging and Alzheimer's Models ... Calcineurin Triggers Reactive/Inflammatory Processes in Astrocytes and Is Upregulated in Aging and Alzheimer's Models -- Norris et al. of calcineurin in astrocytes is sufficient for inducing the that calcineurin upregulation covaried with the degree of astrocyte www.jneurosci.org /cgi/content/full/25/18/4649   (5862 words)

Calcineurin Modulates G Protein-Mediated Inhibition of N-Type Calcium Channels in Rat Sympathetic Neurons -- Zhu and ... Calcineurin Modulates G Protein-Mediated Inhibition of N-Type Calcium Channels in Rat Sympathetic Neurons -- Zhu and Yakel 78 (2): 1161 -- Journal of Neurophysiology Calcineurin is a Ca /calmodulin-regulated protein phosphatase that has been shown to negatively regulate various ligand- and The site of calcineurin regulation is likely to be at the level of the G protein or downstream. jn.physiology.org /cgi/content/full/78/2/1161   (2324 words)

FDA updates prescribing information for topical calcineurin inhibitors - Novartis.com   (Site not responding. Last check: 2007-10-03) Elidel remains indicated for short-term and non-continuous chronic treatment of mild to moderate eczema in patients over two years of age, who have failed to respond adequately to other therapies, or where other therapies are inadvisable. Support for the efficacy and safety of Elidel and topical calcineurin inhibitors in general has been expressed by many professional associations and societies worldwide representing a total of 90,000 dermatologists and other specialists, and by a number of leading groups representing patients and their families. FDA’s review of the safety of topical calcineurin inhibitors was based on a theoretical risk stemming from the adverse events associated with the systemic use of calcineurin inhibitors in animal studies and transplant patients. www.novartis.com /news/en/20060120_elidel_fda_update.shtml   (975 words)

Calcineurin Inhibitors: A Novel Approach to Canine Atopic Dermatitis -- Marsella 41 (2): 92 -- Journal of the American ... Calcineurin Inhibitors: A Novel Approach to Canine Atopic Dermatitis -- Marsella 41 (2): 92 -- Journal of the American Animal Hospital Association Calcineurin Inhibitors: A Novel Approach to Canine Atopic Dermatitis Calcineurin inhibitors such as cyclosporine have been used in www.jaaha.org /cgi/content/full/41/2/92   (3325 words)

Calcineurin Localization in Skeletal Muscle Offers Insights into Potential New Targets -- Torgan and Daniels 54 (1): ... Calcineurin Localization in Skeletal Muscle Offers Insights into Potential New Targets -- Torgan and Daniels 54 (1): 119 -- Journal of Histochemistry and Cytochemistry distribution of calcineurin in developing rat skeletal muscle Presence of SERCA and Calcineurin during Fetal Development of Porcine Skeletal Muscle www.jhc.org /cgi/content/abstract/54/1/119   (288 words)

Chemicon - Product #AG656 - Calcineurin B alpha, recombinant human, His-Tagged Recombinant human Calcineurin B alpha, expressed in bacteria; 6-his fusion SDS Page: calcineurin B alpha runs as an 18 kDa band. However, if EGTA is present the band will run smaller. www.chemicon.com /browse/productdetail.asp?ProductID=AG656   (132 words)

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