We have developed a Web-based interactive cam design package under the programming paradigm of the C language environment. This package was initially developed as a teaching and learning tool for educational use in an undergraduate Computer-Aided Mechanism Design course. Because the system is Web-based and implemented through a client/server model with the user interface through the Web browser...

BACKGROUND Ras protein, as one of intracellular signal switches, plays various roles in several cell activities such as differentiation and proliferation. There is considerable evidence showing that calmodulin (CaM) binds to K-RasB and dissociates K-RasB from membrane and that the inactivation of CaM is able to induce K-RasB activation. However, the mechanism for the interaction of CaM with K-R...

We have shown previously that the Ca2+-dependent inhibition of lens epithelial cell-to-cell communication is mediated in part by the direct association of calmodulin (CaM) with connexin43 (Cx43), the major connexin in these cells. We now show that elevation of [Ca2+](i) in HeLa cells transfected with the lens fiber cell gap junction protein sheep Cx44 also results in the inhibition of cell-to-c...

BACKGROUND Human endothelial nitric oxide synthase (eNOS) requires calcium-bound calmodulin (CaM) for electron transfer but the detailed mechanism remains unclear. METHODOLOGY/PRINCIPAL FINDINGS Using a series of CaM mutants with E to Q substitution at the four calcium-binding sites, we found that single mutation at any calcium-binding site (B1Q, B2Q, B3Q and B4Q) resulted in ∼2-3 fold increa...

S1P (sphingosine 1-phosphate) and SPC (sphingosylphosphorylcholine) have been recently recognized as important mediators of cell signalling, regulating basic cellular processes such as growth,differentiation, apoptosis, motility and Ca2+ homoeostasis.Interestingly, they can also act as first and second messengers. Although their activation of cell-surface G-protein-coupled receptors has been st...

In this issue, Limpitikul et al used the novel CRISPR interference (CRSPRi) strategy to suppress the expression of an arrhythmogenic mutant calmodulin (CaM) gene in human induced pluripotent cell-derived cardiomyocytes (iPSC-CM). This mutant CaM (D130G) is linked with long-QT syndrome (LQTS). The main LQTS mechanism is via a loss in Ca affinity of CaM, resulting in a loss of Ca-dependent inacti...

In this issue, Limpitikul et al used the novel CRISPR interference (CRSPRi) strategy to suppress the expression of an arrhythmogenic mutant calmodulin (CaM) gene in human induced pluripotent cell-derived cardiomyocytes (iPSC-CM). This mutant CaM (D130G) is linked with long-QT syndrome (LQTS). The main LQTS mechanism is via a loss in Ca affinity of CaM, resulting in a loss of Ca-dependent inacti...

In this issue, Limpitikul et al used the novel CRISPR interference (CRSPRi) strategy to suppress the expression of an arrhythmogenic mutant calmodulin (CaM) gene in human induced pluripotent cell-derived cardiomyocytes (iPSC-CM). This mutant CaM (D130G) is linked with long-QT syndrome (LQTS). The main LQTS mechanism is via a loss in Ca affinity of CaM, resulting in a loss of Ca-dependent inacti...

In this issue, Limpitikul et al used the novel CRISPR interference (CRSPRi) strategy to suppress the expression of an arrhythmogenic mutant calmodulin (CaM) gene in human induced pluripotent cell-derived cardiomyocytes (iPSC-CM). This mutant CaM (D130G) is linked with long-QT syndrome (LQTS). The main LQTS mechanism is via a loss in Ca affinity of CaM, resulting in a loss of Ca-dependent inacti...

an increasing number of asthmatic patients are attracted by complementary and and alternative medicine (cam). the aim of this study was to estimate the prevalence and describe the characteristics of cam use by children with asthma in a paediatric allergy clinic in istanbul, turkey.the parents of asthmatic children were invited to participate in a cross-sectional survey study. current asthma tre...