Search results for " sequence"

showing 10 items of 3643 documents

Identification of Lactobacilli from Deep Carious Lesions by Means of Species-Specific PCR and MALDI-TOF Mass Spectrometry

2014

SUMMARY Background: The aim of the present study was to compare MALDI-TOF results for the identification of 87 lactobacilli, isolated from soft or hard carious dentin from 70 first molars of 7- to 8-year-old children with those obtained by species-specific PCR. Methods: The 87 isolates were analyzed by MALDI-TOF MS (Microflex LT, MALDI Biotyper 3.0, Bruker Daltonik, Bremen, Germany), using a reference data base of 4110 strains including > 90 lactobacillus species. For the identification with species-specific PCR, oligonucleotide primers (16S rRNA) specific for L. casei, L. paracasei, L. rhamnosus, L. gasseri, L. plantarum, and L. acidophilus were used; type strains served as controls. The P…

Base SequenceStrain (chemistry)food and beveragesCarious DentinDental CariesBiologyMALDI-TOF Mass Spectrometry16S ribosomal RNAPolymerase Chain ReactionMolecular biologyGeneral Biochemistry Genetics and Molecular BiologyOligonucleotide primersMicrobiologyHighly sensitiveLactobacilluschemistry.chemical_compoundSpecies SpecificitychemistrySpectrometry Mass Matrix-Assisted Laser Desorption-IonizationHumansAgaroseLactobacillus speciesDNA PrimersClinical Laboratory
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Out of Asia: Mitochondrial DNA Evidence for an Oriental Origin of Tiger Frogs, Genus Hoplobatrachus

2001

Most examples of intercontinental dispersal events after the Miocene contact between Africa and Asia involve mammal lineages. Among amphibians, a number of probably related groups are known from both continents, but their phylogenies are so far largely unresolved. To test the hypothesis of Miocene dispersal against a Mesozoic vicariance scenario in the context of Gondwana fragmentation, we analyzed fragments of the mitochondrial 16S rRNA gene (572 bp) in 40 specimens of 34 species of the anuran family Ranidae. Results corroborated the monophyly of tiger frogs (genus Hoplobatrachus), a genus with representatives in Africa and Asia. The African H. occipitalis was the sister group of the Asian…

Base SequencebiologyEcologyFejervaryaZoologybiology.organism_classificationDNA MitochondrialMonophylyEuphlyctisSpecies SpecificitySister groupHylaranaHoplobatrachusRNA Ribosomal 16SGeneticsVicarianceAnimalsBiological dispersalAnuraMolecular BiologyEcology Evolution Behavior and SystematicsDNA PrimersMolecular Phylogenetics and Evolution
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Cloning and characterization of the phenylalanyl-tRNA synthetase β subunit gene fromCandida albicans

1998

A Candida albicans expression library was constructed from RNA isolated from regenerating protoplasts. A 1.4-kb cDNA clone was used to isolate a genomic fragment. Sequence analysis revealed an open reading frame of 593 amino acids with an overall identity of 63.6% with the phenylalanyl-tRNA synthetase beta subunit (FRS1) of Saccharomyces cerevisiae. We named it CaFRS1. It is located in a single copy in chromosome R, SfiI fragment M. Its expression showed a decrease during the cell wall regeneration process in protoplasts of both yeast and mycelial cells of C. albicans, suggesting its requirement thereof in initial steps of the cell wall synthesis.

Base SequencebiologyGenes FungalMolecular Sequence DataSaccharomyces cerevisiaeNucleic acid sequenceRNAMolecular cloningbiology.organism_classificationMicrobiologyMolecular biologyCorpus albicansBlotting SouthernOpen reading frameBiochemistryCell WallCandida albicansGeneticsPhenylalanine-tRNA LigaseAmino Acid SequenceCloning MolecularCandida albicansMolecular BiologyGeneFEMS Microbiology Letters
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Pythium prolatumisolated from soil in the Burgundy region: a new record for Europe

1999

Pythium prolatum Hendrix and Campbell has been isolated from a soil sample taken in the Burgundy region in France. The fungus is easily recognisable by its heavily ornamented oogonia with conical to mammiform spines, elongated sporangia, and its diclinous antheridia forming or originating from a tangled mass of hyphae. Descriptions of the morphological and reproductive aspects of Pythium prolatum, the polymerase chain reaction of the internal transcribed spacer (ITS1) of the ribosomal nuclear DNA as well as the nucleotide sequences of ITS1 coding for 5.8 S rRNA are given.

Base SequencebiologySporangiumMolecular Sequence DatafungiFungal geneticsPythiumSequence Analysis DNASpacer DNARibosomal RNAbiology.organism_classificationDNA RibosomalMicrobiologyRNA Ribosomal 5.8SAntheridiumBotanyGeneticsPythiumInternal transcribed spacerDNA FungalMolecular BiologyRibosomal DNASoil MicrobiologyFEMS Microbiology Letters
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Pythium segnitiumsp. nov., isolated from the Canary Islands – its taxonomy, ITS region of rDNA, and comparison with related species

2002

Pythium segnitium (CI-44) was isolated from some soil samples taken in the Canary Islands (Spain). This new species is a slow-growing fungus and is perfectly adapted to terrestrial habitat. It belongs to the group of Pythium that have smooth-walled oogonia, mostly hypogynous antheridia, and plerotic oospores. The fungus lacks sporangia, zoospores, and hyphal bodies are rarely formed. Thus the asexual reproduction, which is so common for fungi and especially for the aquatic ones, is completely lacking in this case. However the fungus reproduces sexually by the formation of oogonia, antheridia and oospores plentifully. The taxonomic description of this fungus, the nucleotide sequence of the i…

Base SequencebiologySporangiumMolecular Sequence DatafungiPythiumAsexual reproductionFungusbiology.organism_classificationDNA RibosomalPolymerase Chain ReactionMicrobiologySpainAntheridiumDNA Ribosomal SpacerBotanyGeneticsOosporeTaxonomy (biology)PythiumDNA FungalSequence AlignmentMolecular BiologyRibosomal DNASoil MicrobiologyFEMS Microbiology Letters
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A low repeat length in oligodendrocyte chromatin

1985

Abstract: The behavior of oligodendrocyte chromatin after micrococcal nuclease digestion of nuclei was assayed in brains of rats of four different ages. During oligodendrocyte differentiation, a decreasing sensitivity of the chromatin to enzymatic attack was observed. On the other hand, the nucleosomal repeat length showed a slight tendency to increase during development. It is worth noting that even the highest values reported here for “oligodendrocyte’ chromatin repeat lengths are significantly lower than 200 base pairs, the value previously reported by others for “non‐astrocytic glia.” Copyright © 1985, Wiley Blackwell. All rights reserved

Base pairCellular differentiationFluorescent Antibody TechniqueOligodendrocyte differentiationBiochemistryCellular and Molecular NeuroscienceSettore BIO/10 - BiochimicamedicineAnimalsMicrococcal NucleaseNucleosomeRepetitive Sequences Nucleic AcidElectrophoresis Agar GelGeneticsNucleosomal Repeat LengthbiologyAge FactorsOligodendrocyte differentiationDNAMolecular biologyChromatinOligodendrocyteNucleosomesRatsChromatinOligodendrogliamedicine.anatomical_structureLiverbiology.proteinSettore MED/26 - NeurologiaNucleosomal repeat lengthNeurogliaBrain StemMicrococcal nuclease
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The selective synthesis of metallanucleosides and metallanucleotides: a new tool for the functionalization of nucleic acids.

2012

Nucleobases team up: the efficient and selective preparation of purine-derived metallanucleosides, metallanucleotides, and metalladinucleotides having M-C bonds (M=Ir(III), Rh(III)) is reported for the first time. The results presented may be applied to the synthesis of functionalized nucleic acids, or DNA/RNA-modified segments.

Base pairMetalationchemistry.chemical_elementIridiumCatalysisNucleobaseRhodiumchemistry.chemical_compoundNucleic AcidsOrganic chemistryRhodiumBase PairingPurine NucleotidesBase SequenceChemistryOrganic ChemistryRNAGeneral ChemistryDNAPurine NucleosidesCombinatorial chemistryMetalsNucleic acidSurface modificationRNADNAChemistry (Weinheim an der Bergstrasse, Germany)
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Functional characterization of ORCTL2--an organic cation transporter expressed in the renal proximal tubules.

1998

AbstractChromosome 11p15.5 harbors a gene or genes involved in Beckwith-Wiedemann syndrome that confer(s) susceptibility to Wilms' tumor, rhabdomyosarcoma, and hepatoblastoma. We have previously identified a transcript at 11p15.5 which encodes a putative membrane transport protein, designated organic cation transporter-like 2 (ORCTL2), that shares homology with tetracycline resistance proteins and bacterial multidrug resistance proteins. In this report, we have investigated the transport properties of ORCTL2 and show that this protein can confer resistance to chloroquine and quinidine when overexpressed in bacteria. Immunohistochemistry analyses performed with anti-ORCTL2 polyc.onal antibod…

Beckwith-Wiedemann SyndromeOrganic Cation Transport ProteinsTranscription GeneticMolecular Sequence DataBiophysicsTransfectionBiochemistryHomology (biology)11p15.5Kidney Tubules ProximalStructural BiologyGeneticsmedicineAnimalsHumansMolecular BiologyGeneTetracycline/H+ antiporterKidneyOrganic cation transport proteinsbiologyBacteriaBase SequenceMembrane transport proteinOrganic cation transporterMultidrug resistance-associated protein 2Chromosomes Human Pair 11Tetracycline ResistanceOrganic cation transporter like-2Chromosome MappingMembrane ProteinsBiological TransportChloroquineCell BiologyApical membraneTetracyclineMolecular biologyQuinidineDrug Resistance MultipleRecombinant ProteinsKineticsmedicine.anatomical_structureBiochemistryOligodeoxyribonucleotidesCOS Cellsbiology.proteinImmunohistochemistryCarrier ProteinsFEBS letters
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Application of multivariate t-pattern analysis in the study of social interactions in rats

2013

A basic tenet in the realm of modern behavioral sciences is that behavior consists of patterns in time. For this reason, investigations of behavior deal with sequences that are not easily perceivable by the unaided observer. This problem calls for improved means of detection, data handling and analysis. This review focuses on the analysis of the temporal structure of behavior carried out by means of a multivariate approach known as T-pattern analysis. Using this technique, recurring sequences of behavioral events, usually hard to detect, can be unveiled and carefully described. T-pattern analysis has been successfully applied in the study of various aspects of human or animal behavior such …

Behavioral disorder Behavioral sequences Multivariate analysis Social interaction T-pattern analysisSettore BIO/09 - Fisiologia
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Recurring sequences of multimodal non-verbal and verbal communication during a human psycho-social stress test: A temporal pattern analysis

2020

Abstract Background The Trier Social Stress Test (TSST) is a widely used protocol to study human psycho-social stress responses. Quantitative reports of non-verbal behaviors have been carried out by means of the Ethological Coding System for Interviews (ECSI). However, no data have described whether and how non-verbal and verbal behaviors take part in the composition of multimodal sequences of communication during the test. Method Five non-verbal ECSI categories and four verbal behaviors related with communication were included in the Ethogram. A focal sampling was employed to ensure a high temporal resolution of the behavioral annotation. T-Pattern Analysis was employed to detect statistic…

Behavioral sequences; Communication; Ethological assessment; Human psycho-social stress; T-pattern analysis; Trier social stress testExperimental and Cognitive PsychologyT-pattern analysisbehavioral disciplines and activitiesSettore BIO/09 - FisiologiaHuman psycho-social stress03 medical and health sciencesBehavioral NeuroscienceNonverbal communication0302 clinical medicineEthogramStress testStress (linguistics)Trier social stress testHumans0501 psychology and cognitive sciences050102 behavioral science & comparative psychologyBehavioral sequencesHuman communicationPsychological TestsCommunication05 social sciencesEthologyT-pattern analysiEthological assessmentBehavioral sequenceExercise TestPsychologyTrier social stress testPsychosocial030217 neurology & neurosurgeryStress PsychologicalHuman psycho-social streCognitive psychologyMeaning (linguistics)
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