نتایج جستجو برای: insertion sequences
تعداد نتایج: 269074 فیلتر نتایج به سال:
We extend the Series [The modular surface and continued fractions, J. London Math. Soc. (2) 31(1) (1985) 69–80] connection between [Formula: see text], cutting sequences, regular fractions to slow converging Lehner Farey with digits text] in notation used for fractions. also introduce an alternative insertion singularization algorithm expansions other non-semiregular dual expansion so that is i...
Comparative sequence analysis of SARS nCoV and SARS CoV genomes for variation in structural proteins
SARS-nCoV was identified as corona virus had spread worldwide very quickly and affected more than million people worldwide. To halt this acceleration for efficient control the knowledge on genomic information is of utmost importance. We attempted to determine nature variation i.e., insertion, deletion, substitution, among structural sequences required code membrane, spike, nucleocapsid, envelop...
Genome sequences of chicken (low pathogenic avian influenza [LPAI] and highly pathogenic avian influenza [HPAI]) and human isolates from a 2004 outbreak of H7N3 avian influenza in Canada showed a novel insertion in the HA0 cleavage site of the human and HPAI isolate. This insertion likely occurred by recombination between the hemagglutination and matrix genes in the LPAI virus.
Using primers designed from the nucleotide sequences of five insertion elements identified previously in Burkholderia cepacia, the presence of two insertion sequences (IS406 and IS407) was detected in chromosomal DNA isolated from strains of the human pathogen Burkholderia pseudomallei. The IS407 homologue was cloned from B. pseudomallei NCTC 4845 and nucleotide sequenced to confirm its identit...
We describe here the genetic organization of the mec element downstream of the mecA gene in 34 different methicillin-resistant Staphylococcus aureus (MRSA) clinical isolates carrying 13 of the most frequent polymorphisms of mecA and representing the major epidemic clones of MRSA. All polymorphisms carried three common genetic elements: the hypervariable region, a copy of IS431, and a unique 2-k...
The human genome, human endogenous retroviruses (HERV), of which HERV-K113 and HERV-K115 are the only known full-length proviruses that are insertionally polymorphic. Although a handful of previously published papers have documented their prevalence in the global population; to date, there has been no report on their prevalence in the United States population. Here, we studied the geographic di...
We have identified molecular lesions associated with six mutations, w and w, of the white gene of Drosophila melanogaster. These mutations arose in flies subject to I-R hybrid dysgenesis. Four of the mutations give rise to coloured eyes and are associated with insertions of 5.4-kb elements indistinguishable from the I factor controlling I-R dysgenesis. The insertion associated with w is at a si...
In an analysis of 22 of the roughly 100 dispersed 5S rRNA genes in Neurospora crassa, a methylated 5S rRNA pseudogene, Psi63, was identified. We characterized the Psi63 region to better understand the control and function of DNA methylation. The 120-bp 5S rRNA-like region of Psi63 is interrupted by a 1.9-kb insertion that has characteristics of sequences that have been modified by repeat-induce...
ISfinder (www-is.biotoul.fr) is a dedicated database for bacterial insertion sequences (ISs). It has superseded the Stanford reference center. One of its functions is to assign IS names and to provide a focal point for a coherent nomenclature. It is also the repository for ISs. Each new IS is indexed together with information such as its DNA sequence and open reading frames or potential coding ...
To identify mechanisms that influence the evolution of bacterial transposons, DNA sequence variation was evaluated among homologs of insertion sequences IS1, IS3 and IS30 from natural strains of Escherichia coli and related enteric bacteria. The nucleotide sequences within each class of IS were highly conserved among E. coli strains, over 99.7% similar to a consensus sequence. When compared to ...
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