gebhart/patrepeval huggingface dataset:
Empirical force field calculations. 27. A study on the conformations of the simple vicinal diols (1986)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTEmpirical force field calculations. 27. A study on the conformations of the simple vicinal diolsMartin Van Duin, Jan M. A. Baas, and Bastiaan Van de GraafCite this: J. Org. Chem. 1986, 51, 8, 1298–1302Publication Date (Print):April 1, 1986Publication History Published online1 May 2002Published inissue 1 April 1986https://pubs.acs.org/doi/10.1021/jo00358a025https://doi.org/10.1021/jo00358a025research-articleACS PublicationsRequest reuse permissionsArticle Views71Altmetric-Citations18LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InRedditEmail Other access optionsGet e-AlertscloseSupporting Info (1)»Supporting Information Supporting Information Get e-Alerts
Supplemental Table 2 from Calcipotriol Targets LRP6 to Inhibit Wnt Signaling in Pancreatic Cancer (2023)

&lt;p&gt;Supplemental Table 2. RNA-Seq analysis showing significant gene expression changes following 6 hour calcipotriol treatment of AsPC-1 cell line&lt;/p&gt;
Supplementary Methods from <i>Aurora A</i> Is a Repressed Effector Target of the Chromatin Remodeling Protein INI1/hSNF5 Required for Rhabdoid Tumor Cell Survival (2023)

Supplementary Methods from &lt;i&gt;Aurora A&lt;/i&gt; Is a Repressed Effector Target of the Chromatin Remodeling Protein INI1/hSNF5 Required for Rhabdoid Tumor Cell Survival
Ubinuclein-1 confers histone H3.3-specific-binding by the HIRA histone chaperone complex (2015)

Histone chaperones bind specific histones to mediate their storage, eviction or deposition from/or into chromatin. The HIRA histone chaperone complex, composed of HIRA, ubinuclein-1 (UBN1) and CABIN1, cooperates with the histone chaperone ASF1a to mediate H3.3-specific binding and chromatin deposition. Here we demonstrate that the conserved UBN1 Hpc2-related domain (HRD) is a novel H3.3-specific-binding domain. Biochemical and biophysical studies show the UBN1-HRD preferentially binds H3.3/H4 over H3.1/H4. X-ray crystallographic and mutational studies reveal that conserved residues within the UBN1-HRD and H3.3 G90 as key determinants of UBN1-H3.3-binding specificity. Comparison of the structure with the unrelated H3.3-specific chaperone DAXX reveals nearly identical points of contact between the chaperone and histone in the proximity of H3.3 G90, although the mechanism for H3.3 G90 recognition appears to be distinct. This study points to UBN1 as the determinant of H3.3-specific binding and deposition by the HIRA complex.
Small-signal model and control of the interleaved two-phase coupled-inductor boost converter (2016)

Coupled-inductor boost converters are under development for high-current, high-power applications ranging from automotive fuel cells to photovoltaics. This paper presents the small-signal analysis of a coupled-inductor boost converter operating in both CCM and DCM. Due to the complexity of operation of a coupled-inductor boost converter operating in DCM, several small-signal models must be derived. Controllers for the converter are developed using the resulting small-signal models. Experimental validation of these controllers is presented from a 1 kW coupled-inductor boost converter laboratory prototype.
Substance P in Solution: Trans-to-Cis Configurational Changes of Penultimate Prolines Initiate Non-enzymatic Peptide Bond Cleavages (2019)

We report ion mobility spectrometry and mass spectrometry studies of the non-enzymatic step-by-step degradation of substance P (subP), an 11-residue neuropeptide, with the sequence Arg<sup>1</sup>-Pro<sup>2</sup>-Lys<sup>3</sup>-Pro<sup>4</sup>-Gln<sup>5</sup>-Gln<sup>6</sup>-Phe<sup>7</sup>-Phe<sup>8</sup>-Gly<sup>9</sup>-Leu<sup>10</sup>-Met<sup>11</sup>-NH<sub>2</sub>, in ethanol. At elevated solution temperatures (55 to 75 °C), several reactions are observed, including a protonation event, i.e., [subP+2H]<sup>2+</sup> + H<sup>+</sup> → [subP+3H]<sup>3+</sup>, that appears to be regulated by a configurational change and two sequential bond cleavages (the Pro<sup>2</sup>-Lys<sup>3</sup> peptide bond is cleaved to form the smaller nonapeptide Lys<sup>3</sup>-Met<sup>11</sup>-NH<sub>2</sub> [subP<sub>(3-11)</sub>], and subsequently, subP<sub>(3-11)</sub> is cleaved at the Pro<sup>4</sup>-Gln<sup>5</sup> peptide bond to yield the heptapeptide Gln<sup>5</sup>-Met<sup>11</sup>-NH<sub>2</sub> [subP<sub>(5-11)</sub>]). Each of the product peptides [subP<sub>(3-11)</sub> and subP<sub>(5-11)</sub>] is accompanied by a complementary diketopiperazine (DKP): cyclo-Arg<sup>1</sup>-Pro<sup>2</sup> (cRP) for the first cleavage, and cyclo-Lys<sup>3</sup>-Pro<sup>4</sup> (cKP) for the second. Insight about the mechanism of degradation is obtained by comparing kinetics calculations of trial model mechanisms with experimental data. The best model of our experimental data indicates that the initial cleavage of subP is regulated by a conformational change, likely a trans→cis isomerization of the Arg<sup>1</sup>-Pro<sup>2</sup> peptide bond. The subP<sub>(3-11)</sub> product has a long lifetime (t<sub>1/2</sub> ~ 30 h at 55 °C) and appears to transition through several structural intermediates prior to dissociation, suggesting that subP<sub>(3-11)</sub> is initially formed with a Lys<sup>3</sup>-trans-Pro<sup>4</sup> peptide bond configuration and that slow trans→cis isomerization regulates the second bond cleavage event as well. From these data and our model mechanisms, we obtain transition state thermochemistry ranging from ΔH<sup>‡</sup> = 41 to 85 kJ mol<sup>-1</sup> and ΔS<sup>‡</sup> = - 43 to - 157 J mol<sup>-1</sup> K<sup>-1</sup> for each step in the reaction. Graphical Abstract.
On-Chip Integration of Neutral Ionophore-Based Ion Pair Extraction Reaction (2001)

Integration of a neutral ionophore-based ion pair extraction reaction onto a glass microchip was performed. Since the liquid microspace provides a short molecular diffusion distance and a large specific interfacial area of the liquid−liquid interface, novel attractive analytical features arise such as extremely fast ion sensing and ultrasmall reagent solution volume. In contrast to the slow response time of a standard ion optode, in which the response time is basically governed by slow diffusion of ionic species in the viscous polymer membrane, that of the on-chip ion-sensing system is clearly faster due to the short molecular diffusion distance and low viscosity of organic solution. In this case, the organic solution containing a neutral ionophore and a lipophilic pH indicator dye and the aqueous solution containing sample ion were independently introduced into microchannel to form an organic−aqueous interface. Then determination of the ion was performed by thermal lens microscopy at the downstream of the organic phase under continuous-flow conditions. The response time and minimum required reagent solution volume of the on-chip ion-sensing system are about 8 s and 125 nL, respectively, indicating the advantages of using the liquid microspace. Other advantages of the on-chip ion pair extraction system arising from using the liquid microspace and microfluidic system are also discussed in detail.
DDRE-06. CELLULAR STRESS RESPONSE IN DIPG THERAPY (2020)

Abstract Diffuse Intrinsic Pontine Glioma (DIPG) is an incurable pediatric brain tumor of the pons and brainstem. Therefore, there is a desperate need for new therapeutics. Genomic profiling of tumors identified a highly prevalent dominant negative somatic mutation at lysine (K)-27 in histone genes HIST1H3B and H3F3A. Clonal evolution modeling suggests these mutations are truncal, and studies have demonstrated their contribution to tumorigenesis. ONC201, a first-in-class DRD2 antagonist and ClpP agonist is an anticancer drug developed by Oncoceutics, which targets the unfolded protein response (UPR) and integrated stress response (ISR) signaling and is actively being investigated in patients with recurrent H3 K27M-mutant gliomas. In adults with recurrent glioma, single agent studies showed benign-safety, no dose-limiting toxicities and a durable objective response when administered orally. In addition, intra-tumoral drug levels exceeded therapeutic thresholds, and induced tumor cell apoptosis. Based on this and response seen in a pediatric patient with DIPG for whom compassionate use of ONC201 was approved, a multi-arm, non-randomized multi-institutional Phase I clinical trial (NCT03416530) is actively accruing patients. However, the strength of UPR and ISR in DIPGs and their effect on DIPG response to ONC201 is not known. Our group employed bulk/single cell transcriptomic and single cell proteomic approaches to demonstrate substantial heterogeneity in UPR and ISR signaling in human DIPG samples. Consistent with this, DIPG cell lines exhibited considerable variability in sensitivity to ONC201. Single cell profiling identified tumor sub-populations with significant proliferative capacity even after ONC201 exposure. Incomplete response promotes recurrence. To target these cells, we performed a synthetic lethality screen with a library of 360 FDA-approved CNS penetrant compounds, which identified HDAC inhibitors and DNA damage-inducing chemotherapy as having synergy with ONC201. Thus, we suggest that tumor heterogeneity impacts sensitivity to ONC201 and that this can be reduced by combination treatments.
Viral Determinants in H5N1 Influenza A Virus Enable Productive Infection of HeLa Cells (2019)

Influenza A virus (IAV) is a human respiratory pathogen that causes yearly global epidemics, as well as sporadic pandemics due to human adaptation of pathogenic strains. Efficient replication of IAV in different species is, in part, dictated by its ability to exploit the genetic environment of the host cell. To investigate IAV tropism in human cells, we evaluated the replication of IAV strains in a diverse subset of epithelial cell lines. HeLa cells were refractory to the growth of human H1N1 and H3N2 viruses and low-pathogenic avian influenza (LPAI) viruses. Interestingly, a human isolate of the highly pathogenic avian influenza (HPAI) H5N1 virus successfully propagated in HeLa cells to levels comparable to those in a human lung cell line. Heterokaryon cells generated by fusion of HeLa and permissive cells supported H1N1 virus growth, suggesting the absence of a host factor(s) required for the replication of H1N1, but not H5N1, viruses in HeLa cells. The absence of this factor(s) was mapped to reduced nuclear import, replication, and translation, as well as deficient viral budding. Using reassortant H1N1:H5N1 viruses, we found that the combined introduction of nucleoprotein (NP) and hemagglutinin (HA) from an H5N1 virus was necessary and sufficient to enable H1N1 virus growth. Overall, this study suggests that the absence of one or more cellular factors in HeLa cells results in abortive replication of H1N1, H3N2, and LPAI viruses, which can be circumvented upon the introduction of H5N1 virus NP and HA. Further understanding of the molecular basis of this restriction will provide important insights into the virus-host interactions that underlie IAV pathogenesis and tropism.<b>IMPORTANCE</b> Many zoonotic avian influenza A viruses have successfully crossed the species barrier and caused mild to life-threatening disease in humans. While human-to-human transmission is limited, there is a risk that these zoonotic viruses may acquire adaptive mutations enabling them to propagate efficiently and cause devastating human pandemics. Therefore, it is important to identify viral determinants that provide these viruses with a replicative advantage in human cells. Here, we tested the growth of influenza A virus in a subset of human cell lines and found that abortive replication of H1N1 viruses in HeLa cells can be circumvented upon the introduction of H5N1 virus HA and NP. Overall, this work leverages the genetic diversity of multiple human cell lines to highlight viral determinants that could contribute to H5N1 virus pathogenesis and tropism.
Inhibition of Mef2a Enhances Neovascularization via Post-transcriptional Regulation of 14q32 MicroRNAs miR-329 and miR-494 (2017)

Improving the efficacy of neovascularization is a promising strategy to restore perfusion of ischemic tissues in patients with peripheral arterial disease. The 14q32 microRNA cluster is highly involved in neovascularization. The Mef2a transcription factor has been shown to induce transcription of the microRNAs within this cluster. We inhibited expression of Mef2a using gene-silencing oligonucleotides (GSOs) in an in vivo hind limb ischemia model. Treatment with GSO-Mef2a clearly improved blood flow recovery within 3 days (44% recovery versus 25% recovery in control) and persisted until 14 days after ischemia induction (80% recovery versus 60% recovery in control). Animals treated with GSO-Mef2a showed increased arteriogenesis and angiogenesis in the relevant muscle tissues. Inhibition of Mef2a decreased expression of 14q32 microRNAs miR-329 (p = 0.026) and miR-494 (trend, p = 0.06), but not of other 14q32 microRNAs, nor of 14q32 microRNA precursors. Because Mef2a did not influence 14q32 microRNA transcription, we hypothesized it functions as an RNA-binding protein that influences processing of 14q32 microRNA miR-329 and miR-494. Mef2A immunoprecipitation followed by RNA isolation and rt/qPCR confirmed direct binding of MEF2A to pri-miR-494, supporting this hypothesis. Our study demonstrates a novel function for Mef2a in post-ischemic neovascularization via post-transcriptional regulation of 14q32 microRNAs miR-329 and miR-494.
Pegylated-Interferon alfa 2b (INF) Resulting in Regression of Telangiectasias and Epistaxis in Hereditary Hemorrhagic Telangiectasia (HHT) (2005)

HHT or Osler-Weber-Rendu syndrome, described in the late 1800s, is an autosomal dominant disorder affecting 1:5000 to 1:10,000 individuals and manifests with recurrent episodes of epistaxis, GI bleeding, and/or hemoptysis secondary to numerous telangiectasias of the skin and visceral AVMs. Therapy is local obliteration of the AVM. The aim of this case presentation is to report a new effective therapy on a pt with HHT utilizing INF. Case: A 53 year old woman with HHT was in her usual state of health until the age of 52 when she had onset of worsening DOE over a several month period, and daily non-productive cough. She exhibited signs of severe pulmonary HTN on PE, echocardiogram and rt heart catheterization. Coronary angiography revealed no occlusive disease. Neither V/Q scan or CT pulmonary angiogram revealed pulmonary emboli. Numerous telangiectasias involving the face, lips, tongue and extremities were also noted. PMH: She had recurrent nose bleeds since childhood and UGIBs secondary to gastric and duodenal AVMs requiring interventions and numerous blood transfusions. FAMHx: Maternal grandfather had recurrent epistaxis. Results: INF was started based on telangiectasia resolution in one case report. Our pt had facial telangiectasia regression as well as diminished frequency and severity of nosebleeds which decreased from a daily occurrence to once weekly, approximately twelve weeks after INF was initiated. She had no reported GI bleeds after INF was begun. Discussion: This is the third case report of pts with HHT noting regression of telangiectasias using INF and the first case describing epistaxis resolution. Subsequent to our implementation of INF, a second case of INF therapy resulting in regression of telangiectasias in a pt with HHT was reported. Conclusion: INF is a promising new therapy for HHT. Clinical trials are needed in order to determine the efficacy of this drug in pts with HHT.
Structural Materials. Expansion Property and Development of Strength of Mortar Added with Expansive Additives with Many Kinds of Compositions and Particle Sizes. (1999)

The expansion of concrete with calciumsulphoaluminate-type expansive additive containing excess free-lime was larger than that with the conventional calciumsulphoaluminate-type expansive additive or with the free-lime type expansive additive. When the conventional expansive additives were used in the blast furnace slag cement mortar, the effect is smaller than in portland cement, however, the effect of calciumsulphoaluminate-type expansive additive containing excess free-lime was same as that of ordinary portland cement. By controlling the particle size, calciumsulphoaluminate-type expansive additive containing excess free-lime resulted in considerably large strength development even under the same expansion level.
Dynamic cooperation set clustering on base station cooperation cellular networks (2010)

Base station cooperation (BSC) has been identified as a key radio access technology for next-generation cellular networks such as LTE-Advanced. BSC maximizes its gains over non-cooperation (NC) in a network wherein interference from cooperating BSs is the main limitation. However, at locations where the signals from non-cooperating BSs are the dominant interference, the gains are minimal. Therefore, for every user equipment, the set of cooperating BSs must be properly selected in order to achieve the potential gains of BSC in a cellular network. In this paper, various BSC cluster types and cell regions are introduced, and the impact of dynamic clustering on BSC spectral efficiency is discussed. It is shown that to maximize the spectral efficiency gains of BSC multi-user MIMO to a UE, the BSs which induce the strongest received signal powers must be selected for cooperation. Simulation results show that by performing dynamic clustering, the geographical area at which BSC achieves better spectral efficiency over NC can be significantly increased over that of static clustering.
A Framework for Constructing Real-time Immersive Environments for Training Physical Activities (2006)

This paper describes a framework for constructing a three-dimensional immersive environment that can be used for training physical activities. The system is designed to capture three dimensional full-body human motion in real time and visualize the data either locally or remotely through three- dimensional display system so that the data can be viewed from arbitrary viewpoints. In the proposed system, an immersive environment is constructed through realistic reconstruction of a scene by applying a stereo algorithm on a set of images that is captured from multiple viewpoints. Specifically, twelve camera clusters that consist of four camera quadruples are used to capture the scene, where each camera cluster is processed by a pc independently and synchronously so that partial reconstructions from each viewpoint are merged to form a complete 3D description of the scene. This paper discusses in detail system architectures that enable synchronous operations across multiple computers while achieving parallel computations within each multi-processor system. A set of experiments is performed to learn tai-chi lessons in this environment where students are instructed to follow pre-recorded teacher’s movements while observing both their own motions and the teacher in real-time. The effect of learning in the virtual environment is discussed by comparing the performance of the trainee groups under different control environments.
Mouse Models of Human Proprotein Convertase Insufficiency (2020)

The kexin-like proprotein convertases perform the initial proteolytic cleavages that ultimately generate a variety of different mature peptide and proteins, ranging from brain neuropeptides to endocrine peptide hormones, to structural proteins, among others. In this review, we present a general introduction to proprotein convertase structure and biochemistry, followed by a comprehensive discussion of each member of the kexin-like subfamily of proprotein convertases. We summarize current knowledge of human proprotein convertase insufficiency syndromes, including genome-wide analyses of convertase polymorphisms, and compare these to convertase null and mutant mouse models. These mouse models have illuminated our understanding of the roles specific convertases play in human disease and have led to the identification of convertase-specific substrates; for example, the identification of procorin as a specific PACE4 substrate in the heart. We also discuss the limitations of mouse null models in interpreting human disease, such as differential precursor cleavage due to species-specific sequence differences, and the challenges presented by functional redundancy among convertases in attempting to assign specific cleavages and/or physiological roles. However, in most cases, knockout mouse models have added substantively both to our knowledge of diseases caused by human proprotein convertase insufficiency and to our appreciation of their normal physiological roles, as clearly seen in the case of the furin, proprotein convertase 1/3, and proprotein convertase 5/6 mouse models. The creation of more sophisticated mouse models with tissue- or temporally-restricted expression of specific convertases will improve our understanding of human proprotein convertase insufficiency and potentially provide support for the emerging concept of therapeutic inhibition of convertases.
Actionneurs électromagnétiques - Performances comparées (2004)

Cet article établit une comparaison des différents types d'actionneurs électromagnétiques, notamment en termes de couple. Les lois de similitude qui permettent d'établir ces comparaisons sont également présentées. Et d'autres paramètres, moins prépondérants, tels que l'inductance, la vitesse maximale, les pertes, ou encore l'encombrement et le coût, viennent compléter ces comparaisons. &nbsp;Il est important de noter que ces comparaisons restent plus qualitatives que quantitatives, pour pouvoir demeurer assez globales.&nbsp;
A Submerged Cage Designed for Aquatic Research (1999)

We describe the design for a submerged cage that is suitable for aquaculture research and is durable, portable, and affordable. The 1.0-m3 cages are constructed of galvanized-steel strips and semirigid, high-density polyethylene mesh. The strips are welded together to form panels. The mesh is attached to the panels with an adhesive or silicone before the panels are coupled with self-tapping sheet metal screws. Mesh security is aided by sandwiching the mesh between adjoining panels. As designed, the cage is easy to dismantle for transport and to reassemble on site without sacrificing strength. When disassembled, a cage is 1/10th of its original size. Total weight of a cage is 23 kg. For each cage, total material cost is approximately US$65, and estimated total construction cost is less than $120.
hTERT promoter activity and CpG methylation in HPV-induced carcinogenesis (2010)

Methylation of transcriptionally repressive sequences in the hTERT promoter and proximal exonic sequences is correlated to deregulated hTERT transcription in HPV-immortalized cells and cervical cancer cells. The detection of DNA methylation at these repressive regions may provide an attractive biomarker for early detection of cervical cancer.