Stem Flexibility
Mostrando 1-12 de 19 artigos, teses e dissertações.
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1. Poly(trimethylene carbonate-co-L-lactide) electrospun scaffolds for use as vascular grafts
Currently, there is great clinical need for suitable synthetic grafts that can be used in vascular diseases. Synthetic grafts have been successfully used in medium and large arteries, however, their use in small diameter vessels is limited and presents a high failure rate. In this context, the aim of this study was to develop tissue engineering scaffolds, us
Braz J Med Biol Res. Publicado em: 12/08/2019
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2. Estudo da factibilidade da avaliação funcional ambulatorial em pacientes submetidos ao transplante de células-tronco hematopoiéticas / Feasibility study of an outpatient functional evaluation in patients undergoing hematopoietic stem cells transplantation
Hematopoietic stem cell transplant (HSCT) procedure may cause functional losses that impair daily tasks that require physical skills. Our aim was to evaluate function of patients pre and post HSCT using an assessment in outpatient basis. From November 2008 to November 2010, 50 patients, 29 (58%) female, median age 48 years (24-67), were enrolled in the study
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 24/11/2011
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3. ANATOMIA E FLEXIBILIDADE DO CAULE DE QUATRO ESPÉCIES LENHOSAS PARA O MANEJO BIOTÉCNICO DE CURSOS DE ÁGUA. / STEM ANATOMY AND FLEXIBILITY OF FOUR WOOD SPECIES TO WATER COURSES BIOTECHNICAL MANAGEMENT
The use of vegetation is a common tool in Soil Bioengineering; the plants, in this case, must have flexible stems, among other characteristics. The present work aims to investigate the wood anatomy and the stem flexibility of four species: Phyllanthus sellowianus Müll. Arg. (Phyllanthaceae), Sebastiania schottiana (Müll. Arg.) Müll. Arg., Salix humboldtia
Publicado em: 2007
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4. Revised Escherichia coli selenocysteine insertion requirements determined by in vivo screening of combinatorial libraries of SECIS variants
To investigate the stringency of the Escherichia coli selenocysteine insertion sequence (SECIS) requirements, libraries of SECIS variants were screened via a novel method in which suppression of the selenocysteine (Sec) opal codon was coupled to bacteriophage plaque formation. The SECIS variant libraries were designed with a mostly paired lower stem, so that
Oxford University Press.
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5. The Bulged Nucleotide in the Escherichia coli Minimal Selenocysteine Insertion Sequence Participates in Interaction with SelB: a Genetic Approach
The UGA codon, which usually acts as a stop codon, can also direct the incorporation into a protein of the amino acid selenocysteine. This UGA decoding process requires a cis-acting mRNA element called the selenocysteine insertion sequence (SECIS), which can form a stem-loop structure. In Escherichia coli, selenocysteine incorporation requires only the 17-nu
American Society for Microbiology.
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6. Functional characterization of the eukaryotic SECIS elements which direct selenocysteine insertion at UGA codons.
We investigated the requirements for selenocysteine insertion at single or multiple UGA codons in eukaryotic selenoproteins. Two functional SECIS elements were identified in the 3' untranslated region of the rat selenoprotein P mRNA, with predicted stem-loops and critical nucleotides similar to those in the SECIS elements in the type I iodothyronine 5' deiod
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7. Mutations in or near the fusion peptide of the influenza virus hemagglutinin affect an antigenic site in the globular region.
We previously described a monoclonal antibody (Y8-10C2) that binds influenza virus hemagglutinin (HA) monomers but not native trimers. In this study, we demonstrated that Y8-10C2 binds to the globular domain of HA and found evidence that its epitope is located at the interface of adjacent subunits. We further showed that at elevated temperatures, the Y8-10C2
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8. Prediction of consensus structural motifs in a family of coregulated RNA sequences
Given a set of homologous or functionally related RNA sequences, the consensus motifs may represent the binding sites of RNA regulatory proteins. Unlike DNA motifs, RNA motifs are more conserved in structures than in sequences. Knowing the structural motifs can help us gain a deeper insight of the regulation activities. There have been various studies of RNA
Oxford University Press.
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9. Critical chemical features in trans-acting-responsive RNA are required for interaction with human immunodeficiency virus type 1 Tat protein.
The human immunodeficiency virus type 1 Tat protein binds to an RNA stem-loop structure called TAR which is present at the 5' end of all human immunodeficiency virus type 1 transcripts. This binding is centered on a bulge within the stem of TAR and is an essential step in the trans-activation process which results in a dramatic increase in viral gene express
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10. Sensing complex regulatory networks by conformationally controlled hairpin ribozymes
The hairpin ribozyme catalyses RNA cleavage by a mechanism utilizing its conformational flexibility during the docking of two independently folded internal loop domains A and B. Based on this mechanism, we designed hairpin ribozyme variants that can be induced or repressed by external effector oligonucleotides influencing the docking process. We incorporated
Oxford University Press.
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11. Solution structures of the individual single strands of the fragile X DNA triplets (GCC)n.(GGC)n.
Three-dimensional structures of the fragile X triplet repeats (GCC)n and (GGC)n are derived by using one- dimensional/two-dimensional NMR. Under a wide range of solution conditions (10-150 mM NaCl,pH6-7)(GCC)5-7 strands form exclusively slipped hairpins with a 3' overhanging C. The slipped hairpins of (GCC)n strands show the following structural characterist
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12. Totipotency and normal differentiation of single teratocarcinoma cells cloned by injection into blastocysts.
A definitive test for developmental totipotency of mouse malignant teratocarcinoma cells was conducted by cloning singly injected cells in genetically marked blastocysts. Totipotency was conclusively shown in an adult mosaic female whose tumor-strain cells had made substantial contributions to all of the wide range of its somatic tissues analyzed; the clonal