Abstract:
:A new E. coli strain has been constructed that contains the dinD1::LacZ+ fusion and is deficient in methylation-dependent restriction systems (McrA-, McrBC-, Mrr-). This strain has been used to clone restriction endonuclease genes directly into E. coli. When E. coli cells are not fully protected by the cognate methylase, the restriction enzyme damages the DNA in vivo and induces the SOS response. The SOS-induced cells form blue colonies on indicator plates containing X-gal. Using this method the genes coding for the thermostable restriction enzymes Taql (5'TCGA3') and Tth111l (5'GACNNNGTC3') have been successfully cloned in E. coli. The new strain will be useful to clone other genes involved in DNA metabolism.
journal_name
Nucleic Acids Resjournal_title
Nucleic acids researchauthors
Fomenkov A,Xiao JP,Dila D,Raleigh E,Xu SYdoi
10.1093/nar/22.12.2399subject
Has Abstractpub_date
1994-06-25 00:00:00pages
2399-403issue
12eissn
0305-1048issn
1362-4962journal_volume
22pub_type
杂志文章abstract::Virulence factor database (VFDB) was set up in 2004 dedicated for providing current knowledge of virulence factors (VFs) from various medical significant bacterial pathogens to facilitate pathogenomic research. Nowadays, complete genome sequences of almost all the major pathogenic microbes have been determined, which ...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/gkm951
更新日期:2008-01-01 00:00:00
abstract::Human Silent Information Regulator Type 1 (SIRT1) is an NAD(+)-dependent deacetylase protein which is an intermediary of cellular metabolism in gene silencing and aging. SIRT1 has been extensively investigated and shown to delay senescence; however, less is known about the regulation of SIRT1 during aging. In this stu...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/gkq609
更新日期:2010-11-01 00:00:00
abstract::The DINAMelt web server simulates the melting of one or two single-stranded nucleic acids in solution. The goal is to predict not just a melting temperature for a hybridized pair of nucleic acids, but entire equilibrium melting profiles as a function of temperature. The two molecules are not required to be complementa...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/gki591
更新日期:2005-07-01 00:00:00
abstract::The ProtoNet site provides an automatic hierarchical clustering of the SWISS-PROT protein database. The clustering is based on an all-against-all BLAST similarity search. The similarities' E-score is used to perform a continuous bottom-up clustering process by applying alternative rules for merging clusters. The outco...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/gkg096
更新日期:2003-01-01 00:00:00
abstract::Motor proteins that translocate on nucleic acids are key players in gene expression and maintenance. While the function of these proteins is diverse, they are driven by highly conserved core motor domains. In transcription-coupled DNA repair, motor activity serves to remove RNA polymerase stalled on damaged DNA, makin...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/gkp680
更新日期:2009-10-01 00:00:00
abstract::The three chromosomal DNAs of S. pombe have been fractionated by pulsed field gel electrophoresis. The resulting molecular karyotype will greatly speed gene mapping in this organism, and it indicates that the separation range of the technique extends to DNA molecules as large as 9,000,000 base pairs. ...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/15.11.4481
更新日期:1987-06-11 00:00:00
abstract::Gene promoters are enriched in guanine clusters that potentially fold into quadruplex structures. Such quadruplexes were implicated in the regulation of gene expression, plausibly by interacting with transcription factors. We showed previously that homodimers of the myogenic transcription factor MyoD bound in vitro mo...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/gkp1208
更新日期:2010-04-01 00:00:00
abstract::Evidence will be presented to show that the allyl group is suitable for the protection of a 3'-terminal phosphodiester function. The latter will be demonstrated by the synthesis, via a phosphotriester approach, of two cyclic tetraribonucleotides [r(AAAA) and r(UAMe2UAMe2)], two cyclic hexadeoxyribonucleotides [d(CGCGC...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/16.10.4607
更新日期:1988-05-25 00:00:00
abstract::A new method of representing DNA sequences has been devised which is termed stave projection. Compared with other formats for showing the base sequences of DNA, this method greatly enhances the ease of visual analysis of the sequences of bases and it is also in a machine readable form. Using this method it is possible...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/14.1.509
更新日期:1986-01-10 00:00:00
abstract::Proteins that catalyse homologous recombination have been identified in all living organisms and are essential for the repair of damaged DNA as well as for the generation of genetic diversity. In bacteria homologous recombination is performed by the RecA protein, whereas in the eukarya a related protein called Rad51 i...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/29.22.4509
更新日期:2001-11-15 00:00:00
abstract::Phylogenetic analysis of Y-family DNA polymerases suggests that it can be subdivided into several discrete branches consisting of UmuC/DinB/Rev1/Rad30/Rad30A and Rad30B. The most diverse is the DinB family that is found in all three kingdoms of life. Searches of the complete genome of the crenarchaeon Sulfolobus solfa...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/29.22.4607
更新日期:2001-11-15 00:00:00
abstract::Transcription factor decoy binding sites are short DNA sequences that can titrate a transcription factor away from its natural binding site, therefore regulating gene expression. In this study, we harness synthetic transcription factor decoy systems to regulate gene expression for metabolic pathways in Escherichia col...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/gkaa1234
更新日期:2021-01-25 00:00:00
abstract::5' Terminal cap structures of hnRNA have been characterized and the extent of capping determined as a function of embryonic development. Sea urchin embryo hnRNA contains only the type-1 cap, m7GpppNmpNp, with the type-2 cap, which has a 2'-0-methylated subpenultimate nucleotide, being associated only with stable small...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/6.6.2307
更新日期:1979-01-01 00:00:00
abstract::Explicit solvent molecular dynamics (MD) simulations were carried out for sarcin-ricin domain (SRD) motifs from 23S (Escherichia coli) and 28S (rat) rRNAs. The SRD motif consists of GAGA tetraloop, G-bulged cross-strand A-stack, flexible region and duplex part. Detailed analysis of the overall dynamics, base pairing, ...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/gkj470
更新日期:2006-02-02 00:00:00
abstract::Understanding networks of protein-protein interactions constitutes an essential component on a path towards comprehensive description of cell function. Whereas efficient techniques are readily available for the initial identification of interacting protein partners, practical strategies are lacking for the subsequent ...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/gkm563
更新日期:2007-01-01 00:00:00
abstract::The paper presents measurements of the difference in the melting temperature of a colE1 DNA region when it is located inside the DNA helix and at its end. A direct comparison of calculations based on the rigorous theory of helix-coil transition with experimental data for .2 M Na+ (the conditions for fully reversible m...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/9.20.5469
更新日期:1981-10-24 00:00:00
abstract::We have recently developed a novel method for the affinity purification of the complete suite of translating mRNA from genetically labeled cell populations. This method permits comprehensive quantitative comparisons of the genes employed by each specific cell type. We provide a detailed description of tools for analys...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/gkq130
更新日期:2010-07-01 00:00:00
abstract::Pre-mRNA transcripts in a variety of organisms, including plants, Drosophila and Caenorhabditis elegans, contain introns which are significantly richer in adenosine and uridine residues than their flanking exons. Previous analyses using exonic and intronic replacements between two nonequivalent 5'splice sites in the 4...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/25.5.1071
更新日期:1997-03-01 00:00:00
abstract::The family Picornaviridae contains important pathogens including, for example, hepatitis A virus and foot-and-mouth disease virus. The genome of these viruses is a single messenger-active (+)-RNA of 7200-8500 nt. Besides coding for the viral proteins, it also contains functionally important RNA secondary structures, a...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/29.24.5079
更新日期:2001-12-15 00:00:00
abstract::Over 50 introns have been reported in archaeal rRNA genes (rDNAs), a subset of which nests putative homing endonuclease (HEase) genes. Here, we report the identification and characterization of a novel archaeal LAGLIDADG-type HEase, I-ApeKI [corrected], encoded by the ApeK1.S908 intron within the 16S rDNA of Aeropyrum...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/gni118
更新日期:2005-07-26 00:00:00
abstract::Diethyl pyrocarbonate reacts with the single-stranded loops of cruciform structures with great selectivity. Adenine bases are carbethoxylated, as a result of which the backbone may be cleaved with piperidine, and the level of chemical modification at each base may be determined. We have studied the ColE1 and (A-T)34 c...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/14.10.3995
更新日期:1986-05-27 00:00:00
abstract::The FREP database (http://facts.gsc.riken.go.jp/FREP/) contains 31 396 RepeatMasker-identified non-redundant variant repeat sequences derived from 16,527 mouse cDNAs with protein-coding potential. The repeats were computationally associated with potential effects on transcriptional variation, translation, protein func...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/gkh123
更新日期:2004-01-01 00:00:00
abstract::Mutations in human mitochondrial DNA are often associated with incurable human neuromuscular diseases. Among these mutations, an important number have been identified in tRNA genes, including 29 in the gene MT-TL1 coding for the tRNA(Leu(UUR)). The m.3243A>G mutation was described as the major cause of the MELAS syndr...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/gkr546
更新日期:2011-10-01 00:00:00
abstract::Adenosine to inosine editing of mRNA from the human 5-HT2C receptor gene (HTR2C) occurs at five exonic positions (A-E) in a stable stem-loop that includes the normal 5' splice site of intron 5 and is flanked by two alternative splice sites. Using in vitro editing, we identified a novel editing site (F) located in the ...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/gkh536
更新日期:2004-04-15 00:00:00
abstract::The Moloney murine leukemia virus (MLV) is a prototype gammaretrovirus requiring nuclear disassembly before DNA integration. In the nucleus, integration site selection towards promoter/enhancer elements is mediated by the host factor bromo- and extraterminal domain (BET) proteins (bromodomain (Brd) proteins 2, 3 and 4...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/gky1157
更新日期:2019-02-20 00:00:00
abstract::For the first time mosaic nucleic acids composed of 50% RNA and 50% DNA can be obtained as transcripts with T7 RNA polymerase. Two NTPs could be replaced simultaneously in a transcription reaction. This means more than 40 deoxynucleotides were inserted in one transcript. Previously, a maximum of two deoxynucleotides c...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/23.11.1845
更新日期:1995-06-11 00:00:00
abstract::Multiplexed tandem PCR (MT-PCR) is a process for highly multiplexed gene expression profiling. In the first step, multiple primer pairs are added to the RNA to be analysed together with reverse transcriptase and Taq DNA polymerase. Following reverse transcription, the multiplexed amplicons are simultaneously amplified...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/gni182
更新日期:2005-11-24 00:00:00
abstract::In Euplotes crassus millions of telomeres are synthesized during the sexual phase of the life cycle. Since these newly synthesized telomeres are longer than normal macronuclear telomeres, they must be trimmed to the mature size. We have examined the timing and mechanism of this trimming step. We have shown that a sudd...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/21.23.5366
更新日期:1993-11-25 00:00:00
abstract::Recently, due to the dual roles of DNA and enzyme, DNAzyme has been widely used in the field of DNA circuit, which has a wide range of applications in bio-engineered system, information processing and biocomputing. In fact, the activity of DNAzymes was regulated by subunits assembly, pH control and metal ions triggers...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/gky1245
更新日期:2019-02-20 00:00:00
abstract::Upon growth transition of Escherichia coli cells from exponential to stationary phase, RNA polymerase is converted into at least three different forms (S1, S2 and S3), which could be separately isolated by phosphocellulose column chromatography (Ozaki et al., 1991 (2)). Here, the promoter selectivity of these three st...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/20.2.257
更新日期:1992-01-25 00:00:00