نتایج جستجو برای: dna mutational analysis

تعداد نتایج: 3221390  

Journal: :Cancers 2021

The molecular carcinogenesis of intraductal tubulopapillary neoplasms (ITPN), recently described as rare in the pancreato-biliary tract with a favorable prognosis despite high incidence associated adenocarcinoma, is still poorly understood. To identify driver genes, chromosomal gains and losses, mutational signatures, key signaling pathways, potential therapeutic targets, profile 11 biliary 6 p...

Journal: :journal of agricultural science and technology 2013
m. zaki-aghl k. izadpanah a. niazi s. a. a. behjatnia a. r. afsharifar

australian grapevine viroid (agvd), an apscaviroid of the family pospiviroidae, was recently identified in vineyards of southern iran. it had a relatively wide host range and caused stunting, leaf deformation, mottling and vein clearing in experimental hosts upon mechanical inoculation of nucleic acid extracts or agroinfiltration of the viroid infectious cloned dna. predicted secondary structur...

Journal: :Revue scientifique et technique 2006
A A El-Kholy K A Abdelrahman

The Egyptian Abu-Hammad vaccinal strain of bovine herpesvirus-1 (BHV-1) was genetically characterised by comparing HindIII endonuclease genomic fingerprints of the Egyptian BHV-1 with reference strain Cooper 1 of BHV-1 subtype 1 (BHV-1.1). Analyses of nucleotide (nt) and deduced amino acid (aa) sequences and phylogeny of the major viral immunogen, glycoprotein D (gD), were used to compare the E...

Journal: :Genome research 2009
Robin C Friedman Kyle Kai-How Farh Christopher B Burge David P Bartel

MicroRNAs (miRNAs) are small endogenous RNAs that pair to sites in mRNAs to direct post-transcriptional repression. Many sites that match the miRNA seed (nucleotides 2-7), particularly those in 3' untranslated regions (3'UTRs), are preferentially conserved. Here, we overhauled our tool for finding preferential conservation of sequence motifs and applied it to the analysis of human 3'UTRs, incre...

2016
Elaine R. Mardis Sarah C.R. Elgin

The Muller F element (4.2 Mb, ~80 protein-coding genes) is an unusual autosome of Drosophila melanogaster; it is mostly heterochromatic with a low recombination rate. To investigate how these properties impact the evolution of repeats and genes, we manually improved the sequence and annotated the genes on the D. erecta, D. mojavensis, and D. grimshawi F elements and euchromatic domains from the...

Journal: :PLoS Biology 2005
Rebecca Montville Remy Froissart Susanna K Remold Olivier Tenaillon Paul E Turner

Mutational (genetic) robustness is phenotypic constancy in the face of mutational changes to the genome. Robustness is critical to the understanding of evolution because phenotypically expressed genetic variation is the fuel of natural selection. Nonetheless, the evidence for adaptive evolution of mutational robustness in biological populations is controversial. Robustness should be selectively...

Journal: :Nucleic Acids Research 2006
Oliver Mortusewicz Ulrich Rothbauer M. Cristina Cardoso Heinrich Leonhardt

DNA ligation is an essential step in DNA replication, repair and recombination. Mammalian cells contain three DNA Ligases that are not interchangeable although they use the same catalytic reaction mechanism. To compare the recruitment of the three eukaryotic DNA Ligases to repair sites in vivo we introduced DNA lesions in human cells by laser microirradiation. Time lapse microscopy of fluoresce...

Leila Nourani, Mansour Aliabadian

DNA barcoding based on a standardized region of 648 base pairs of mitochondrial DNAsequences from Cytochrome C Oxidase 1 (COX1) is proposed for animal species identification.Recent studies suggested that DNA barcoding has been effective for identifying 94% of birdspecies. The proposed threshold of 10 times the average intraspecific variation could be used forthe identification and delimitation ...

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