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Registros recuperados: 4
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Calmodulin and Calcium-release Channels Biol. Res.
KASRI,NAEL NADIF; PARYS,JAN B.; CALLEWAERT,GEERT; MISSIAEN,LUDWIG; DE SMEDT,HUMBERT.
Calmodulin (CaM) is a ubiquitous cytosolic protein that plays a critical role in regulating cellular functions by altering the activity of a large number of ion channels. There are many examples for CaM directly mediating the feedback effects of Ca2+ on Ca2+ channels. Recently the molecular mechanisms by which CaM interacts with voltage-gated Ca2+ channels, Ca2+-activated K+ channels and ryanodine receptors have been clarified. CaM plays an important role in regulating these ion channels through lobe-specific Ca2+ detection. CaM seems to behave as a channel subunit. It binds at low [Ca2+] and undergoes conformational changes upon binding of Ca2+, leading to an interaction with another part of the channel to regulate its gating. Here we focus on the...
Tipo: Journal article Palavras-chave: Calmodulin calcium channels inositol 1; 4; 5-trisphosphate receptor.
Ano: 2004 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602004000400011
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Enhancement with inducers of lacasse production by some strains and application of enzyme to dechlorination of 2,4,5-trichlorophenol Electron. J. Biotechnol.
Gedikli,Serap; Aytar,Pinar; Ünal,Arzu; Yamaç,Mustafa; Çabuk,Ahmet; Kolankaya,Nazif.
Lacasse is one of the extracellular enzymes excreted from white and brown rot fungi, which is involved in ligninolysis. In the present study, the effects of the addition of lacasse inducers to the medium on enhancement of enzyme production under conditions of submerged fermentation were researched. At first, a culture medium was selected suitable for lacasse production. To increase the production of lacasse using different inducers and to examine the ability of dechlorination, this article focuses on screen lacasse activity of 21 basidiomycetes isolates grown in five culture media. All inducers evaluated influenced lacasse activity positively except for gallic acid, mannitol, and malt extract for studied isolates. Our findings showed that lacasse activity...
Tipo: Journal article Palavras-chave: 2; 4; 5-trichlorophenol basidiomycetes dechlorination inducer lacasse.
Ano: 2010 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582010000600006
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IP3 receptors and Ca2+ signals in adult skeletal muscle satellite cells in situ Biol. Res.
MOLGÓ,JORDI; COLASANTE,CESARE; ADAMS,DANY S; JAIMOVICH,ENRIQUE.
In this short article we review muscle satellite cell characteristics and our studies in adult rodent muscle satellite cells in situ. Using confocal laser scanning microscopy and immunocytochemistry, a high level of IP3 receptor (IP3R) immunostaining was detected in satellite cells. These cells were identified by their peripheral position, their size, the shape of their nucleus, the paucity of the apparent cytoplasm, and the immunostaining with specific molecular markers such as a-actinin, the neural cell adhesion molecule (N-CAM) and desmin. High extracellular K+ (60 mM) induced long-lasting Ca2+ signalsin satellite cells in situ. We suggest that electrical activity stimulates IP3-associated Ca2+ signals that could act in concert with signaling pathways...
Tipo: Journal article Palavras-chave: Muscle satellite cells Inositol 1; 4; 5-trisphosphate receptors intracellular Ca2+ Signal transduction.
Ano: 2004 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602004000400019
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Modulation of cytosolic calcium signaling by protein kinase A-mediated phosphorylation of inositol 1,4,5-trisphosphate receptors Biol. Res.
STRAUB,STEPHEN V; WAGNER II,LARRY E; BRUCE,JASON I.E; YULE,DAVID I.
Calcium release via intracellular Ca2+ release channels is a central event underpinning the generation of numerous, often divergent physiological processes. In electrically non-excitable cells, this Ca2+ release is brought about primarily through activation of inositol 1,4,5-trisphosphate receptors and typically takes the form of calcium oscillations. It is widely believed that information is carried in the temporal and spatial characteristics of these signals. Furthermore, stimulation of individual cells with different agonists can generate Ca2+ oscillations with dramatically different spatial and temporal characteristics. Thus, mechanisms must exist for the acute regulation of Ca2+ release such that agonist-specific Ca2+...
Tipo: Journal article Palavras-chave: Inositol 1; 4; 5-trisphosphate receptor protein kinase A calcium signaling pancreatic acinar cells parotid acinar cells.
Ano: 2004 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602004000400013
Registros recuperados: 4
Primeira ... 1 ... Última
 

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