Co-regulation of cell polarization and migration by caveolar proteins PTRF/Cavin-1 and caveolin-1.

Caveolin-1 and caveolae differently polarized in cell migration in a variety of models, and Caveolin-1 expression has been shown to modulate cell migration quantitatively. PTRF / Cavin-1 is a cytoplasmic protein is now established to be also required for the formation of caveola. Here we test the effects of PTRF expression on cell migration.

Using fluorescence imaging, quantitative General Recombinant Proteins proteomics, and cell migration tests we showed that PTRF / Cavin-1 polarization modulated cellular and subcellular localization of Rac1 and Caveolin-1 in cell migration and recruitment PKCα caveola.

PTRF / Cavin-1 quantitative cell migration is reduced, and induced epithelial mesenchymal refund. Similar to Caveolin-1, polarization PTRF / Cavin-1 depending on the mode of migration. By selectively manipulating PTRF / Cavin-1 and Caveolin-1 expression (and therefore the formation of caveola) in several cell systems, we uncover caveola-independent functions for both proteins in cell migration.

Co-regulation of cell polarization and migration by caveolar proteins PTRF/Cavin-1 and caveolin-1.

Down-regulation of protein Cavin breast cancer families.

Caveolae is abundant membrane domain on the cell surface of various types of mammalian cells and is involved in various physiological processes. Structural proteins caveolae Caveolin-1 is frequently mutated or deregulated in cancer, and family Cavin response serum protein deficiency-related factor gene product that binds to the C-kinase (SRBC) was found epigenetically active in the lung, breast, and stomach cancer.

Both Caveolin-1, and SRBC have been proposed https://gentaur.fr/ to function as a tumor suppressor. Polymerase Factor 1 and transcript release (PTRF) is an essential component for the formation of caveolae. Regulation of the expression of cancer PTRF not been characterized. We report here that protein family Cavin PTRF, SRBC response and serum protein deficiencies down regulated in breast cancer cell lines and breast tumor tissue.

We further showed that down-regulation of PTRF in breast cancer cells is associated with methylation of the promoter. As Caveolin-1 and Cavin family of proteins required for caveolae formation and function, tumor suppression function of Caveolin-1 is reported and SRBC may be due to the deregulation of caveolae and the downstream signaling. Thus, caveolae is a potential therapeutic target and the expression of protein Cavin family can be a useful prognostic indicator of breast cancer development.

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CAVIN-3 regulates circadian period length and PER:CRY protein abundance and interactions.

n mammals, transcriptional autorepression by Period (PER) and cryptochrome (CRY) protein complex is essential for the generation of circadian rhythms. We have identified Cavin-3, PER2-new cytoplasmic proteins interact affecting the properties of the circadian clock. Thus, Cavin-3 loss- and gain-of-function shortened and extended, respectively, in the circadian period of fibroblasts and exposed PER: CRY protein abundance and interactions. W hile the depletion of protein kinase Cδ (PKCδ) , the pair are known Equine Recombinant Proteins from Cavin-3, have little effect on circadian gene expression, Cavin-3 PKCδ binding sites required to exert its effect on the length of the period. This suggests the involvement of yet uncharacterized protein kinase. Finally, Cavin-3 activity in circadian gene expression is independent of caveolae. Dieckol, a phlorotannin isolated from brown seaweed, Ecklonia cava, inhibits adipogenesis through AMP-activated protein kinase (AMPK) activation in 3...

Phasin proteins activate Aeromonas caviae polyhydroxyalkanoate (PHA) synthase but not Ralstonia eutropha PHA synthase.

In this study, we performed in vitro and in vivo activity assays of polyhydroxyalkanoate (PHA) synthase (PhaCs) in the presence of protein phasin (PhaPs), which revealed that PhaPs are activators of PHAC derived from Aeromonas caviae (PhaCAc). In an in vitro study, among the three PhaCs tested, PhaCAc significantly activated when PhaPs added at the beginning of polymerization (prepolymerization PhaCAc), while prepolymerization PhaCRe (derived from Cupriavidus necator) and PhaCDa (Delftia acidovorans) showed decreased activity with PhaPs. The PhaCAc Phap-enabled show a slight shift in substrate preference towards 3-hydroxyhexanoyl-CoA (C6). PhaPAc also enabled PhaCAc when added during the polymerization (polymer-elongating PhaCAc), while this effect was not observed for PhaCRe. In an in vivo test using Escherichia coli strain C aprine Recombinant Proteins TOP10 as the host, the effect of PhaPAc expression on PHA synthesis by PhaCAc or PhaCRe examined. As PhaPAc expres...

Identification of intracellular cavin target proteins reveals cavin-PP1alpha interactions regulate apoptosis.

Caveolae is specialized domains of the plasma membrane. Invaginations formation is dependent on the expression of Caveolin-1 or -3 and protein from the family Cavin. In response to stress, caveolae dismantle and cavins released from caveolae, allowing cavins potentially interact with intracellular targets. Here, we describe the intracellular (non-plasma membrane) Purified Recombinant Protein s Cavin interactome using biotin affinity proteomics and mass spectrometry. We validate 47-interactor protein Cavin potential using cell-free expression system and the proteins that bind to the test. These data, together with analysis of pathways, revealing unknown role for the protein Cavin in metabolism and stress signals. We validated the interaction between a candidate interactor protein, protein phosphatase 1 alpha (PP1α), and Cavin-1 and -3 and showed that UV treatment causes release of caveolae Cavin3 enable interaction with and inhibition, PP1α. H2AX phosphorylation incre...

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