Abstract:
:We have determined the nucleotide sequence of a 7.5 kb full-size gypsy element from Drosophila subobscura strain H-271. Comparative analyses were carried out on the sequence and molecular structure of gypsy elements of D.subobscura (gypsyDs), D.melanogaster (gypsyDm) and D.virilis (gypsyDv). The three elements show a structure that maintains a common mechanism of expression. ORF1 and ORF2 show typical motifs of gag and pol genes respectively in the three gypsy elements and could encode functional proteins necessary for intracellular expansion. In the three ORF1 proteins an arginine-rich region was found which could constitute a RNA binding motif. The main differences among the gypsy elements are found in ORF3 (env-like gene); gypsyDm encodes functional env proteins, whereas gypsyDs and gypsyDv ORF3s lack some motifs essential for functionality of this protein. On the basis of these results, while gypsyDm is the first insect retrovirus described, gypsyDs and gypsyDv could constitute degenerate forms of these retroviruses. In this context, we have found some evidence that gypsyDm could have recently infected some D.subobscura strains. Comparative analyses of divergence and phylogenetic relationships of gypsy elements indicate that the gypsy elements belonging to species of different subgenera (gypsyDs and gypsyDv) are closer than gypsy elements of species belonging to the same subgenus (gypsyDs and gypsyDm). These data are congruent with horizontal transfer of gypsy elements among different Drosophila spp.
journal_name
Nucleic Acids Resjournal_title
Nucleic acids researchauthors
Alberola TM,de Frutos Rdoi
10.1093/nar/24.5.914subject
Has Abstractpub_date
1996-03-01 00:00:00pages
914-23issue
5eissn
0305-1048issn
1362-4962pii
5c0201journal_volume
24pub_type
杂志文章abstract::The Arabidopsis Information Resource (TAIR, http://arabidopsis.org) is the model organism database for the fully sequenced and intensively studied model plant Arabidopsis thaliana. Data in TAIR is derived in large part from manual curation of the Arabidopsis research literature and direct submissions from the research...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/gkm965
更新日期:2008-01-01 00:00:00
abstract::TcruziDB (http://TcruziDB.org) is an integrated genome database for the parasitic organism Trypanosoma cruzi, the causative agent of Chagas' disease. The database currently incorporates all available sequence data (Genomic, BAC, EST) in a single user-friendly location. The database contains a variety of tools specific...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/gkh049
更新日期:2004-01-01 00:00:00
abstract::The Nucleolar Proteome Database (NOPdb) archives data on >700 proteins that were identified by multiple mass spectrometry (MS) analyses from highly purified preparations of human nucleoli, the most prominent nuclear organelle. Each protein entry is annotated with information about its corresponding gene, its domain st...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/gkj004
更新日期:2006-01-01 00:00:00
abstract::ymf39 is a conserved hypothetical protein-coding gene found in mitochondrial genomes of land plants and certain protists. We speculated earlier, based on a weak sequence similarity between Ymf39 from a green alga and the atpF gene product from Bradyrhizobium, that ymf39 might code for subunit b of mitochondrial F(0)F(...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/gkg326
更新日期:2003-05-01 00:00:00
abstract::A total of 10 B-lymphocyte-specific DNase I hypersensitive sites located in the chicken Ig-beta locus were divided into four regions and combinations of deletions of these regions were carried out. A decrease in transcription of the Ig-beta gene to <3% was demonstrated in cells with deletions in all four regions. The ...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/gkl469
更新日期:2006-08-11 00:00:00
abstract::Protein synthesis elongation factor 2 (EF-2) from all archaebacteria so far analysed, is susceptible to inactivation by diphtheria toxin, a property which it shares with EF-2 from the eukaryotic 8OS translation system. To resolve the structural basis of diphtheria toxin susceptibility, the structural gene for the EF-2...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/16.16.7817
更新日期:1988-08-25 00:00:00
abstract::Chromatin distribution is not uniform along the human genome. In most genes there is a promoter-associated nucleosome free region (NFR) followed by an array of nucleosomes towards the gene body in which the first (+1) nucleosome is strongly positioned. The function of this characteristic chromatin distribution in tran...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/gkv149
更新日期:2015-03-31 00:00:00
abstract::LOCtarget is a web server and database that predicts and annotates sub-cellular localization for structural genomics targets; LOCnet is one of the methods used in LOCtarget that can predict sub-cellular localization for all eukaryotic and prokaryotic proteins. Targets are taken from the central registration database f...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/gkh441
更新日期:2004-07-01 00:00:00
abstract::Stable protein complexes, including those formed with RNA, are major building blocks of every living cell. Escherichia coli has been the leading bacterial organism with respect to global protein-protein networks. Yet, there has been no global census of RNA/protein complexes in this model species of microbiology. Here,...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/gkaa676
更新日期:2020-09-18 00:00:00
abstract::We have prepared cDNA libraries for amoebae and plasmodia of the acellular slime mould, Physarum polycephalum. Differential screening was used to isolate cell-type-specific cDNA clones (in bacteriophage M13) and both libraries yielded approximately 5% of such sequences. The amoebal- and plasmodial-specific clones were...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/15.3.933
更新日期:1987-02-11 00:00:00
abstract::ModBase (http://salilab.org/modbase) is a database of annotated comparative protein structure models. The models are calculated by ModPipe, an automated modeling pipeline that relies primarily on Modeller for fold assignment, sequence-structure alignment, model building and model assessment (http://salilab.org/modelle...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/gkq1091
更新日期:2011-01-01 00:00:00
abstract::Diazo-based precursors of photolabile groups have been used extensively for modifying nucleic acids, with the intention of toggling biological processes with light. These processes include transcription, translation and RNA interference. In these cases, the photolabile groups have been typically depicted as modifying ...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/gkp415
更新日期:2009-07-01 00:00:00
abstract::A database (http://perso.curie.fr/tsoussi ) is described, in which over 1000 mutations in the human APC gene of tumors (colon cancer predominantly) are compiled from the literature. It includes both molecular information about the mutations and clinical data about the patients. Software has been designed to analyse al...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/26.1.269
更新日期:1998-01-01 00:00:00
abstract::This year's Database Issue of Nucleic Acids Research contains 152 papers that include descriptions of 54 new databases and update papers on 98 databases, of which 16 have not been previously featured in NAR As always, these databases cover a broad range of molecular biology subjects, including genome structure, gene e...
journal_title:Nucleic acids research
pub_type:
doi:10.1093/nar/gkw1188
更新日期:2017-01-04 00:00:00
abstract::Bacterial Rho-independent terminators (RITs) are important genomic landmarks involved in gene regulation and terminating gene expression. In this investigation we present RNIE, a probabilistic approach for predicting RITs. The method is based upon covariance models which have been known for many years to be the most a...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/gkr168
更新日期:2011-08-01 00:00:00
abstract::Molecular dynamics (MD) simulations and time resolved fluorescence (TRF) spectroscopy were combined to quantitatively describe the conformational landscape of the DNA primary binding sequence (PBS) of the HIV-1 genome, a short hairpin targeted by retroviral nucleocapsid proteins implicated in the viral reverse transcr...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/gkw077
更新日期:2016-04-20 00:00:00
abstract::Transcription and translation are coupled in bacteria, meaning that translation takes place co-transcriptionally. During transcription-translation, both machineries mutually affect each others' functions, which is important for regulation of gene expression. Analysis of interactions between RNA polymerase (RNAP) and t...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/gkr1262
更新日期:2012-03-01 00:00:00
abstract::Escherichia coli mRNA translation is facilitated by sequences upstream and downstream of the initiation codon, called Shine-Dalgarno (SD) and downstream box (DB) sequences, respectively. In E.coli enhancing the complementarity between the DB sequences and the 16S rRNA penultimate stem resulted in increased protein acc...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/29.4.970
更新日期:2001-02-15 00:00:00
abstract::Successful development of biological databases requires accommodation of the burgeoning amounts of data from high-throughput genomics pipelines. As the volume of curated data in Animal QTLdb (https://www.animalgenome.org/QTLdb) increases exponentially, the resulting challenges must be met with rapid infrastructure dev...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/gky1084
更新日期:2019-01-08 00:00:00
abstract::Recently, we described a method for multiplex genome editing by natural transformation (MuGENT). Mutant constructs for MuGENT require large arms of homology (>2000 bp) surrounding each genome edit, which necessitates laborious in vitro DNA splicing. In Vibrio cholerae, we uncover that this requirement is due to cytopl...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/gkx496
更新日期:2017-07-07 00:00:00
abstract::Splicing of mammalian introns requires that the intron possess at least 80 nucleotides. This length requirement presumably reflects the constraints of accommodating multiple snRNPs simultaneously in the same intron. In the free-living nematode, C. elegans, introns typically are 45 to 55 nucleotides in length. In this ...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/18.1.143
更新日期:1990-01-11 00:00:00
abstract::Apurinic/apyrimidinic endonuclease 1 (APE1), an essential protein in mammals, is involved in base excision DNA repair (BER) and in regulation of gene expression, acting as a redox co-activator of several transcription factors. Recent findings highlight a novel role for APE1 in RNA metabolism, which is modulated by nuc...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/gkq691
更新日期:2010-12-01 00:00:00
abstract::RNA helicases of the DEAD-box protein family form the largest group of helicases. The human DEAD-box protein 1 (DDX1) plays an important role in tRNA and mRNA processing, is involved in tumor progression and is also hijacked by several virus families such as HIV-1 for replication and nuclear export. Although important...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/gkv106
更新日期:2015-03-11 00:00:00
abstract::DNA topoisomerase II (topo II) changes DNA topology by cleavage/re-ligation cycle(s) and thus contributes to various nuclear DNA transactions. It is largely unknown how the enzyme is controlled in a nuclear context. Several studies have suggested that its C-terminal domain (CTD), which is dispensable for basal relaxat...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/gku640
更新日期:2014-08-01 00:00:00
abstract::In order to systematically analyze the effects of nucleoside modification of sugar moieties in DNA polymerase reactions, we synthesized 16 modified templates containing 2',4'-bridged nucleotides and three types of 2',4'-bridged nucleoside-5'-triphospates with different bridging structures. Among the five types of ther...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/gkn404
更新日期:2008-08-01 00:00:00
abstract::An immunofluorescence assay was developed to identify proteins specifically binding to oligonucleoside phosphorodithioate (ODN) aptamers from a bead-bound ODN library. Accordingly, NF-kappaB p50 protein was incubated with either bead-bound NF-kappaB consensus sequence or a bead-bound ODN combinatorial library and adso...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/gng054
更新日期:2003-05-15 00:00:00
abstract::Human cytomegalovirus (HCMV) terminase is composed of subunits pUL56 (130 kDa) and pUL89 ( approximately 75 kDa), encoded by the UL56 and UL89 genes. In a recent investigation, we demonstrated that the main ATPase activity is associated with the large terminase subunit pUL56. The protein has two putative ATP-binding s...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/gkg229
更新日期:2003-03-01 00:00:00
abstract::Given the many roles proposed for Mg2+ in nucleic acids, it is essential to accurately determine their binding modes. Here, we surveyed the PDB to classify Mg2+ inner-sphere binding patterns to nucleobase imine N1/N3/N7 atoms. Among those, purine N7 atoms are considered to be the best nucleobase binding sites for diva...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/gkw1175
更新日期:2017-01-25 00:00:00
abstract::The emergence of massively parallel sequencing technology has revolutionized microbial profiling, allowing the unprecedented comparison of microbial diversity across time and space in a wide range of host-associated and environmental ecosystems. Although the high-throughput nature of such methods enables the detection...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/gkt1070
更新日期:2013-12-01 00:00:00
abstract::Cdc48/p97 is an evolutionary conserved ubiquitin-dependent chaperone involved in a broad array of cellular functions due to its ability to associate with multiple cofactors. Aside from its role in removing RNA polymerase II from chromatin after DNA damage, little is known about how this AAA-ATPase is involved in the t...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/gku786
更新日期:2014-01-01 00:00:00