Search results for: terminal
#29036671 2017/10/16 Save this To Up
CRISPR/Cas9-mediated gene knockout is insensitive to target copy number but is dependent on guide RNA potency and Cas9/sgRNA threshold expression level.CRISPR/Cas9 is a powerful gene editing tool for gene knockout studies and functional genomic screens. Successful implementation of CRISPR often requires Cas9 to elicit efficient target knockout in a population of cells. In this study, we investigated the role of several key factors, including variation in target copy number, inherent potency of sgRNA guides, and expression level of Cas9 and sgRNA, in determining CRISPR knockout efficiency. Using isogenic, clonal cell lines with variable copy numbers of an EGFP transgene, we discovered that CRISPR knockout is relatively insensitive to target copy number, but is highly dependent on the potency of the sgRNA guide sequence. Kinetic analysis revealed that most target mutation occurs between 5 and 10 days following Cas9/sgRNA transduction, while sgRNAs with different potencies differ by their knockout time course and by their terminal-phase knockout efficiency. We showed that prolonged, low level expression of Cas9 and sgRNA often fails to elicit target mutation, particularly if the potency of the sgRNA is also low. Our findings provide new insights into the behavior of CRISPR/Cas9 in mammalian cells that could be used for future improvement of this platform.
2309 related Products with: CRISPR/Cas9-mediated gene knockout is insensitive to target copy number but is dependent on guide RNA potency and Cas9/sgRNA threshold expression level.Anti AGO2 Human, Monoclon Anti AGO2 Mouse, Monoclon Anti AGO2 Human, Monoclon Anti AGO2 Mouse, Monoclon Rabbit Anti-IEX1 Differen Rabbit Anti-IEX1 Differen Rabbit Anti-IEX1 Differen Rabbit Anti-IEX1 Differen Rabbit Anti-IEX1 Differen Rabbit Anti-IEX1 Differen Rabbit Anti-IEX1 Differen Rabbit Anti-IEX1 Differen
#29036638 2017/10/16 Save this To Up
The basic tilted helix bundle domain of the prolyl isomerase FKBP25 is a novel double-stranded RNA binding module.Prolyl isomerases are defined by a catalytic domain that facilitates the cis-trans interconversion of proline residues. In most cases, additional domains in these enzymes add important biological function, including recruitment to a set of protein substrates. Here, we report that the N-terminal basic tilted helix bundle (BTHB) domain of the human prolyl isomerase FKBP25 confers specific binding to double-stranded RNA (dsRNA). This binding is selective over DNA as well as single-stranded oligonucleotides. We find that FKBP25 RNA-association is required for its nucleolar localization and for the vast majority of its protein interactions, including those with 60S pre-ribosome and early ribosome biogenesis factors. An independent mobility of the BTHB and FKBP catalytic domains supports a model by which the N-terminus of FKBP25 is anchored to regions of dsRNA, whereas the FKBP domain is free to interact with neighboring proteins. Apart from the identification of the BTHB as a new dsRNA-binding module, this domain adds to the growing list of auxiliary functions used by prolyl isomerases to define their primary cellular targets.
1597 related Products with: The basic tilted helix bundle domain of the prolyl isomerase FKBP25 is a novel double-stranded RNA binding module.Anti AGO2 Human, Monoclon Anti AGO2 Mouse, Monoclon Anti AGO2 Human, Monoclon Anti AGO2 Mouse, Monoclon TCP-1 theta antibody Sour SH3 domain-binding protei amyloid beta precursor pr zona pellucida binding pr RNA binding motif protein PDI (Protein Disulfide Is 3-Anilino-2-(3,4,5-trimet Analysis Tool for AAM-ISO
#29036480 2017/10/16 Save this To Up
Treatment of obstructive sleep apnoea-hypopnea syndrome by mandible advanced device reduced neuron apoptosis in frontal cortex of rabbits.To investigate effects of mandible advanced device (MAD) therapy for obstructive sleep apnoea-hypopnea syndrome (OSAHS) on the neuron apoptosis and acetylcholine esterase activity in frontal cortex.
2108 related Products with: Treatment of obstructive sleep apnoea-hypopnea syndrome by mandible advanced device reduced neuron apoptosis in frontal cortex of rabbits.Anti 3 DG imidazolone Mon BYL-719 Mechanisms: PI3K- Apoptosis antibody array Apoptosis Phospho-Specifi Cancer Apoptosis Phospho- Apoptosis (Human) Antibod Apoptosis (Human) Antibod Mid advanced stage bladde Mid advanced stage bladde Advanced breast cancer an Middle advanced stage bre Middle advanced stage bre
#29036355 2017/10/16 Save this To Up
Design and implementation of a synthetic pre-miR switch for controlling miRNA biogenesis in mammals.Synthetic RNA-based systems have increasingly been used for the regulation of eukaryotic gene expression. Due to their structural properties, riboregulators provide a convenient basis for the development of ligand-dependent controllable systems. Here, we demonstrate reversible conditional control of miRNA biogenesis with an aptamer domain as a sensing unit connected to a natural miRNA precursor for the first time. For the design of the pre-miR switch, we replaced the natural terminal loop with the TetR aptamer. Thus, the TetR aptamer was positioned close to the Dicer cleavage sites, which allowed sterical control over pre-miR processing by Dicer. Our design proved to be highly versatile, allowing us to regulate the biogenesis of three structurally different miRNAs: miR-126, -34a and -199a. Dicer cleavage was inhibited up to 143-fold via co-expression of the TetR protein, yet could be completely restored upon addition of doxycycline. Moreover, we showed the functionality of the pre-miR switches for gene regulation through the interaction of the respective miRNA with its specific target sequence. Our designed device is capable of robust and reversible control of miRNA abundance. Thus, we offer a novel investigational tool for functional miRNA analysis.
2895 related Products with: Design and implementation of a synthetic pre-miR switch for controlling miRNA biogenesis in mammals.Human miRNA array I Cancer miRNA array Stem cell miRNA Array Breast invasive ductal ca A1BG Pre-design Chimera R AADAC Pre-design Chimera AARS Pre-design Chimera R Multiple lung carcinoma ( Cancer miRNA Profiling Pl miRNA Plate Assay Apoptosis Associated miRN MiRNA Northern Blot Assay
#29036226 2017/10/16 Save this To Up
Structural plasticity of the N-terminal capping helix of the TPR domain of kinesin light chain.Kinesin1 plays a major role in neuronal transport by recruiting many different cargos through its kinesin light chain (KLC). Various structurally unrelated cargos interact with the conserved tetratricopeptide repeat (TPR) domain of KLC. The N-terminal capping helix of the TPR domain exhibits an atypical sequence and structural features that may contribute to the versatility of the TPR domain to bind different cargos. We determined crystal structures of the TPR domain of both KLC1 and KLC2 encompassing the N-terminal capping helix and show that this helix exhibits two distinct and defined orientations relative to the rest of the TPR domain. Such a difference in orientation gives rise, at the N-terminal part of the groove, to the formation of one hydrophobic pocket, as well as to electrostatic variations at the groove surface. We present a comprehensive structural analysis of available KLC1/2-TPR domain structures that highlights that ligand binding into the groove can be specific of one or the other N-terminal capping helix orientations. Further, structural analysis reveals that the N-terminal capping helix is always involved in crystal packing contacts, especially in a TPR1:TPR1' contact which highlights its propensity to be a protein-protein interaction site. Together, these results underline that the structural plasticity of the N-terminal capping helix might represent a structural determinant for TPR domain structural versatility in cargo binding.
2277 related Products with: Structural plasticity of the N-terminal capping helix of the TPR domain of kinesin light chain.Mouse Anti-Kinesin Light Ofloxacin CAS Number [824 Kappa Light Chain Kappa Light Chain Lambda Light Chain Lambda Light Chain Kappa Light Chain Lambda Light Chain BACTERIOLOGY BACTEROIDES Myosin Light Chain 2 (Pho Mouse Anti-Human Ig Kappa Mouse Anti-Human Ig Kappa
#29036200 2017/10/16 Save this To Up
The effect of the pathological V72I, D109N and T190M missense mutations on the molecular structure of α-dystroglycan.Dystroglycan (DG) is a highly glycosylated protein complex that links the cytoskeleton with the extracellular matrix, mediating fundamental physiological functions such as mechanical stability of tissues, matrix organization and cell polarity. A crucial role in the glycosylation of the DG α subunit is played by its own N-terminal region that is required by the glycosyltransferase LARGE. Alteration in this O-glycosylation deeply impairs the high affinity binding to other extracellular matrix proteins such as laminins. Recently, three missense mutations in the gene encoding DG, mapped in the α-DG N-terminal region, were found to be responsible for hypoglycosylated states, causing congenital diseases of different severity referred as primary dystroglycanopaties.To gain insight on the molecular basis of these disorders, we investigated the crystallographic and solution structures of these pathological point mutants, namely V72I, D109N and T190M. Small Angle X-ray Scattering analysis reveals that these mutations affect the structures in solution, altering the distribution between compact and more elongated conformations. These results, supported by biochemical and biophysical assays, point to an altered structural flexibility of the mutant α-DG N-terminal region that may have repercussions on its interaction with LARGE and/or other DG-modifying enzymes, eventually reducing their catalytic efficiency.
1678 related Products with: The effect of the pathological V72I, D109N and T190M missense mutations on the molecular structure of α-dystroglycan.BACTERIOLOGY BACTEROIDES TCP-1 theta antibody Sour Recombinant Thermostable Recombinant Thermostable Recombinant Thermostable Recombinant Human PKC the Recombinant Human PKC the Recombinant Human PKC the Single Strand DNA Ligase, Single Strand DNA Ligase, Thermostable TDG Enzyme & Thermostable TDG Kit
#29036189 2017/10/16 Save this To Up
Inhibition of CUG-binding protein 1 and activation of caspases are critically involved in piperazine derivative BK10007S induced apoptosis in hepatocellular carcinoma cells.Though piperazine derivative BK10007S was known to induce apoptosis in pancreatic cancer xenograft model as a T-type CaV3.1 a1G isoform calcium channel blocker, its underlying antitumor mechanism still remains unclear so far. Thus, in the present study, the antitumor mechanism of BK10007S was elucidated in hepatocellular carcinoma cells (HCCs). Herein, BK10007S showed significant cytotoxicity by 3-[4,5-2-yl]-2,5-diphenyltetra-zolium bromide (MTT) assay and anti-proliferative effects by colony formation assay in HepG2 and SK-Hep1 cells. Also, apoptotic bodies and terminal deoxynucleotidyl transferase (TdT) dUTP Nick End Labeling (TUNEL) positive cells were observed in BK10007S treated HepG2 and SK-Hep1 cells by 4',6-diamidino-2-phenylinodole (DAPI) staining and TUNEL assay, respectively. Consistently, BK10007S increased sub G1 population in HepG2 and SK-Hep1 cells by cell cycle analysis. Furthermore, Western blotting revealed that BK10007S activated the caspase cascades (caspase 8, 9 and 3), cleaved poly (ADP-ribose) polymerase (PARP), and downregulated the expression of cyclin D1, survivin and for CUG-binding protein 1 (CUGBP1 or CELF1) in HepG2 and SK-Hep1 cells. Conversely, overexpression of CUGBP1 reduced cleavages of PARP and caspase 3, cytotoxicity and subG1 population in BK10007S treated HepG2 cells. Overall, these findings provide scientific evidences that BK10007S induces apoptosis via inhibition of CUGBP1 and activation of caspases in hepatocellular carcinomas as a potent anticancer candidate.
2897 related Products with: Inhibition of CUG-binding protein 1 and activation of caspases are critically involved in piperazine derivative BK10007S induced apoptosis in hepatocellular carcinoma cells.Goat Anti-Human Vitamin D Liver hepatocellular carc Hepatocellular carcinoma Rat monoclonal anti mouse Rat monoclonal anti mouse Rat monoclonal anti mouse Rat monoclonal anti mouse Rat monoclonal anti mouse Anti-AICDA(Activation-ind Anti AICDA(Activation ind to FAPβ (Fibroblast Act to FAPβ (Fibroblast Act
#29035813 2017/10/16 Save this To Up
Energy loss and impact of various stunning devices used for the slaughtering of water buffaloes.Stock management of the Swiss water buffalo livestock results in the slaughtering of about 350 animals per year. As the stunning of water buffaloes still is an unresolved issue, we investigated the terminal ballistics of currently used perforating stunning devices. Cartridge fired captive bolt devices, handguns and a bullet casing gun were tested in a shooting steep by firing on bisected heads, forehead plates and soap blocks. Energy loss of captive bolts confirmed their inadequacy when used for heavy water buffaloes, notably adult males. As for the free projectiles, ballistics revealed that beyond the impact energy, bullet deformation has a strong impact on the outcome. Light 9mm Luger or .38 Spl bullets as well as large deformable .44 Rem. Magnum bullets should be avoided in favor of heavier .357 Magnum deformation ammunition. These data have been translated into the development of a new stunning device for water buffaloes meeting both animal welfare and occupational safety requirements.
2595 related Products with: Energy loss and impact of various stunning devices used for the slaughtering of water buffaloes.Ofloxacin CAS Number [824 Cellufine Formyl , 50 ml Cellufine Formyl Media Cellufine Formyl , 500 ml Cellufine Formyl Media Cellufine Formyl Media Water, Deionized Distill Water, Deionized Distill Water, Deionized Distill Formalin Solution (20%) Formalin Solution (20%) Formalin Solution (20%)
#29035791 2017/10/16 Save this To Up
Availability of polycyclic aromatic hydrocarbons to earthworms in urban soils and its implications for risk assessment.Polycyclic aromatic hydrocarbons (PAHs) are a global problem, and in urban soils they can be found at potentially hazard levels. Nevertheless, the real risks that these contaminants pose to the environment are not well known, since the bioavailability of PAHs in urban soils has been poorly studied. Therefore, the bioavailability of PAHs in some selected urban soils from Lisbon (Portugal) was evaluated. Moreover, the applicability of a first screening phase based on total contents of PAHs was assessed. Results show that bioavailability of PAHs is reduced (low levels in earthworms, low accumulation percentages, and low biota-to-soil accumulation factors values), especially in more contaminated soils. The aging of these compounds explains this low availability, and confirms the generally accepted assumption that accumulation of PAHs in urban areas is mostly related with a long-term deposition of contaminated particles. The comparison of measured PAHs concentrations in earthworm tissues with the ones predicted based on theoretical models, reinforce that risks based on total levels are overestimated, but it can be a good initial approach for urban soils. This study also highlights the need of more reliable ecotoxicological data.
1122 related Products with: Availability of polycyclic aromatic hydrocarbons to earthworms in urban soils and its implications for risk assessment.Recombinant Human Interfe Native Influenza HA (A To Native Influenza HA (A To Native Influenza HA (A To Cell Meter™ Fluorimetri Cell Meter™ Fluorimetri T-2 Toxin Mycotoxins ELIS Nycodenz, non ionic, non (7’-Benzyloxy-indolymet Homogenizer for 24 sample Top five cancer tissue ar Breast invasive ductal ca
#29035788 2017/10/16 Save this To Up
Coronavirus infectious bronchitis virus non-structural proteins 8 and 12 form stable complex independent of the non-translated regions of viral RNA and other viral proteins.The cleavage products from coronavirus polyproteins, known as the non-structural proteins (nsps), are believed to make up the major components of the viral replication/transcription complex. In this study, several nsps encoded by avian gammacoronavirus infectious bronchitis virus (IBV) were screened for RNA-binding activity and interaction with its RNA-dependent RNA polymerase, nsp12. Nsp2, nsp5, nsp8, nsp9 and nsp10 were found to bind to untranslated regions (UTRs), while nsp8 was confirmed to interact with nsp12. Nsp8 has been reported to interact with nsp7 and functions as a primase synthesizing RNA primers for nsp12. Further characterization revealed that nsp8-nsp12 interaction is independent of the UTRs of viral RNA, and nsp8 interacts with both the N- and C-terminal regions of nsp12. These results have prompted a proposal of how the nsp7-nsp8 complex could possibly function in tandem with nsp12, forming a highly efficient complex that could synthesize both the RNA primer and viral RNA during coronavirus infection.
2058 related Products with: Coronavirus infectious bronchitis virus non-structural proteins 8 and 12 form stable complex independent of the non-translated regions of viral RNA and other viral proteins.Recombinant Viral antige Recombinant Rubella Viral Recombinant Rubella Viral Recombinant Rubella Viral MOUSE ANTI CANINE DISTEMP Recombinant Human Androge Recombinant Viral antige Recombinant Viral antige Recombinant Viral antige Recombinant Viral antige Recombinant Viral antige Recombinant Viral antige
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