Molecular structures of two new anti-HIV nucleoside analogs: 9-(2,3-dideoxy-2-fluoro-beta-D-threo-pentofuranosyl)adenine and 9-(2,3-dideoxy-2-fluoro-beta-D-threo-pentofuranosyl)hypoxanthine.

abstract：:Using cyanoethyldiisopropylamino phosphoramidite chemistry, four oligonucleotides constituting a part of the sequence of the initiator t-RNA from B. subtilis were synthesized. For the protection of the exocyclic amino functions of bases, phenoxyacetyl group was used for adenine and guanine, and acetyl group was prefer...

journal_title：Nucleic acids research

authors： Chaix C,Duplaa AM,Molko D,Téoule R

更新日期：1989-09-25 00:00:00

abstract：:To explain the activation of transcription by a remote enhancer, two models are most often considered, namely looping and scanning. A scanning model, also referred to as 'polymerase entry site' model predicts that for two adjacent promoters the one proximal to an enhancer would be preferentially activated. Preferentia...

journal_title：Nucleic acids research

authors： Heuchel R,Matthias P,Schaffner W

更新日期：1989-11-25 00:00:00

abstract：:The human gene for plasminogen activator inhibitor type-1 (PAI-1) has been isolated and its promoter region characterized. PAI-1 regulation by glucocorticoids, transforming growth factor-beta (TGF-beta) and the phorbol ester PMA is shown to be exerted at the promoter level. A fragment spanning 805 nucleotides of the 5...

journal_title：Nucleic acids research

authors： Riccio A,Lund LR,Sartorio R,Lania A,Andreasen PA,Danø K,Blasi F

更新日期：1988-04-11 00:00:00

abstract：:DNA curvature plays a well-characterized role in many transcriptional regulation mechanisms. We present evidence for the conservation of curvature signals in putative regulatory regions of several archaeal and eubacterial genomes. Genes with highly curved upstream regions were identified in orthologous groups, based o...

journal_title：Nucleic acids research

authors： Jáuregui R,Abreu-Goodger C,Moreno-Hagelsieb G,Collado-Vides J,Merino E

更新日期：2003-12-01 00:00:00

abstract：:Cells respond to DNA damage by activating both cellular growth arrest and DNA repair processes. In Saccharomyces cerevesiae the RAD9 gene controls DNA damage-mediated cell cycle arrest that is known to allow efficient repair. To ascertain whether RAD9 plays a role in DNA repair per se, the removal of UV-induced photol...

journal_title：Nucleic acids research

authors： Al-Moghrabi NM,Al-Sharif IS,Aboussekhra A

更新日期：2001-05-15 00:00:00

abstract：:This paper describes a computer program designed to look for similarities between pairs of nucleic or amino acid sequences. The program looks both for segments of perfect identity or for regions where, using a scoring matrix, a minimum value is exceeded. The results of comparisons are presented as a matrix which is di...

journal_title：Nucleic acids research

authors： Staden R

更新日期：1982-05-11 00:00:00

abstract：:Human Adenovirus type 5 encodes two short RNA polymerase III transcripts, the virus-associated (VA) RNAI and VA RNAII, which can adopt stable hairpin structures that resemble micro-RNA precursors. The terminal stems of the VA RNAs are processed into small RNAs (mivaRNAs) that are incorporated into RISC. It has been re...

journal_title：Nucleic acids research

authors： Xu N,Gkountela S,Saeed K,Akusjärvi G

更新日期：2009-11-01 00:00:00

abstract：:Lytic infection with polyoma virus leads in Go-arrested primary mouse kidney cell cultures to a mitotic host response. In the present work we focused our attention on cellular RNA synthesis shortly after onset of polyoma T-antigen synthesis. Onset of polyoma-induced stimulation of 45S pre-rRNA synthesis was determined...

journal_title：Nucleic acids research

authors： Matter JM,Tiercy JM,Weil R

更新日期：1983-10-11 00:00:00

abstract：:Yeast two-hybrid (Y2H) screenings result in identification of many out-of-frame (OOF) clones that code for short (2-100 amino acids) peptides with no sequence homology to known proteins. We hypothesize that these peptides can reveal common short linear motifs (SLiMs) responsible for their selection. We present a new p...

journal_title：Nucleic acids research

authors： Liu Y,Woods NT,Kim D,Sweet M,Monteiro AN,Karchin R

更新日期：2011-10-01 00:00:00

abstract：:The interaction of several synthetic analogues of d-ApA with Poly U and Poly dT was examined to explore the effects of substituents at phosphorus on binding properties of oligonucleotides. These analogues contained a bulky, lipophilic group (2,2,2-trichloroethoxy or 2,2,2-trichloro-1,1-dimethylethoxy) a small, uncharg...

journal_title：Nucleic acids research

authors： Letsinger RL,Bach SA,Eadie JS

更新日期：1986-04-25 00:00:00

abstract：:Structural changes of reconstituted SV 40 minichromosomes have been studied in relation to the salt concentration and addition of histone H1 by sedimentation and electron microscopy. Sedimentation data are represented as functions of the NaCl concentration and the Debye-Hückel electrostatic screening radius 1/alpha. T...

journal_title：Nucleic acids research

authors： Böttger M,Scherneck S,von Mickwitz CU,Fenske H,Lindigkeit R

更新日期：1979-08-10 00:00:00

abstract：:PIECE (Plant Intron Exon Comparison and Evolution) is a web-accessible database that houses intron and exon information of plant genes. PIECE serves as a resource for biologists interested in comparing intron-exon organization and provides valuable insights into the evolution of gene structure in plant genomes. Recent...

journal_title：Nucleic acids research

authors： Wang Y,Xu L,Thilmony R,You FM,Gu YQ,Coleman-Derr D

更新日期：2017-01-04 00:00:00

abstract：:In plants, small interfering RNAs (siRNAs) can trigger a silencing signal that may spread within a tissue to adjacent cells or even systemically to other organs. Movement of the signal is initially limited to a few cells, but in some cases the signal can be amplified and travel over larger distances. How far silencing...

journal_title：Nucleic acids research

authors： de Felippes FF,Ott F,Weigel D

更新日期：2011-04-01 00:00:00

abstract：:Primer Design Assistant (PDA) is a web interface primer design service combined with thermodynamic theory to evaluate the fitness of primers. It runs in a Linux-Apache-MySQL-PHP structure on a PC equipped with dual CPU (Intel Pentium III 1.4 GHz) and 512 Mb of RAM. A succinct user interface of PDA is accomplished by b...

journal_title：Nucleic acids research

authors： Chen SH,Lin CY,Cho CS,Lo CZ,Hsiung CA

更新日期：2003-07-01 00:00:00

abstract：:We investigated how Escherichia coli ClpXP targets the helicase-nuclease (HsdR) subunit of the bacterial Type I restriction-modification enzyme EcoKI during restriction alleviation (RA). RA is a temporary reduction in endonuclease activity that occurs when Type I enzymes bind unmodified recognition sites on the host g...

journal_title：Nucleic acids research

authors： Simons M,Diffin FM,Szczelkun MD

更新日期：2014-10-29 00:00:00

abstract：:A number of regulatory nascent peptides have been shown to regulate gene expression by causing programmed ribosome stalling during translation. Nascent peptide emerges from the ribosome through the exit tunnel, and one-third of the way along which β-loop structures of ribosomal proteins uL4 and uL22 protrude into the ...

journal_title：Nucleic acids research

authors： Takamatsu S,Ohashi Y,Onoue N,Tajima Y,Imamichi T,Yonezawa S,Morimoto K,Onouchi H,Yamashita Y,Naito S

更新日期：2020-02-28 00:00:00

abstract：:The discovery of hydroxymethyl-, formyl- and carboxylcytosine, generated through oxidation of methylcytosine by TET dioxygenases, raised the question how these modifications contribute to epigenetic regulation. As they are subjected to complex regulation in vivo, we dissected links to gene expression with in vitro mod...

journal_title：Nucleic acids research

authors： Müller U,Bauer C,Siegl M,Rottach A,Leonhardt H

更新日期：2014-07-01 00:00:00

abstract：:The locus DXS269 (P20) defines a deletion hotspot in the distal part of the Duchenne Muscular Dystrophy gene. We have cloned over 90 kilobase-pairs of genomic DNA from this region in overlapping cosmids. The use of whole cosmids as probes in a competitive DNA hybridization analysis proves a fast and convenient method ...

journal_title：Nucleic acids research

authors： Blonden LA,den Dunnen JT,van Paassen HM,Wapenaar MC,Grootscholten PM,Ginjaar HB,Bakker E,Pearson PL,van Ommen GJ

更新日期：1989-07-25 00:00:00

abstract：:The thermal stabilities of RNA:DNA hybrids are substantially greater than those of DNA:DNA duplexes in aqueous electrolyte solutions containing high concentrations of formamide. Association rates to form DNA:DNA duplexes and DNA:RNA hybrids have been measured in these solvents. There is a temperature range in which DN...

journal_title：Nucleic acids research

authors： Casey J,Davidson N

更新日期：1977-01-01 00:00:00

abstract：:Ribosomal protein (rp)S5 belongs to the family of the highly conserved rp's that contains rpS7 from prokaryotes and rpS5 from eukaryotes. Alignment of rpS5/rpS7 from metazoans (Homo sapiens), fungi (Saccharomyces cerevisiae) and bacteria (Escherichia coli) shows that the proteins contain a conserved central/C-terminal...

journal_title：Nucleic acids research

authors： Lumsden T,Bentley AA,Beutler W,Ghosh A,Galkin O,Komar AA

更新日期：2010-03-01 00:00:00

abstract：:Histone H2B O-GlcNAcylation is an important post-translational modification of chromatin during gene transcription. However, how this epigenetic modification is regulated remains unclear. Here we found that the energy-sensing adenosine-monophosphate-activated protein kinase (AMPK) could suppress histone H2B O-GlcNAcyl...

journal_title：Nucleic acids research

authors： Xu Q,Yang C,Du Y,Chen Y,Liu H,Deng M,Zhang H,Zhang L,Liu T,Liu Q,Wang L,Lou Z,Pei H

更新日期：2014-05-01 00:00:00

abstract：:Fluorogenic RNAs that are based on the complex formed by 3,5-difluoro-4-hydroxybenzylidene imidazolinone (DFHBI) derivatives and the RNA aptamer named Spinach were used to engineer a new generation of in vitro and in vivo sensors for bioanalytics. With the resolved crystal structure of the RNA/small molecule complex, ...

journal_title：Nucleic acids research

authors： Ketterer S,Fuchs D,Weber W,Meier M

更新日期：2015-10-30 00:00:00

abstract：:In a gene targeting experiment, the generation of a targeting construct often requires complex DNA manipulations. We developed a set of cassettes and plasmids useful for creating targeting vectors to modify the mammalian genome. A positive selection marker cassette (PGK/EM7p-npt), which included dual prokaryotic and e...

journal_title：Nucleic acids research

authors： Aoyama M,Agari K,Sun-Wada GH,Futai M,Wada Y

更新日期：2005-03-22 00:00:00

abstract：:We report the latest release (version 3.0) of the CATH protein domain database (http://www.cathdb.info). There has been a 20% increase in the number of structural domains classified in CATH, up to 86 151 domains. Release 3.0 comprises 1110 fold groups and 2147 homologous superfamilies. To cope with the increases in di...

journal_title：Nucleic acids research

authors： Greene LH,Lewis TE,Addou S,Cuff A,Dallman T,Dibley M,Redfern O,Pearl F,Nambudiry R,Reid A,Sillitoe I,Yeats C,Thornton JM,Orengo CA

更新日期：2007-01-01 00:00:00

abstract：:The oncoprotein c-Myc plays an important role in cell proliferation, transformation, inhibition of differentiation and apoptosis. These functions most likely result from the transcription factor activity of c-Myc. As a heterodimer with Max, the c-Myc protein binds to the E-box sequence (CACGTG), which is also recogniz...

journal_title：Nucleic acids research

authors： Walhout AJ,Gubbels JM,Bernards R,van der Vliet PC,Timmers HT

更新日期：1997-04-15 00:00:00

abstract：:Histone post-translational modifications have been shown to contribute to DNA damage repair. Prior studies have suggested that specific H3K79 methylation states play distinct roles in the response to UV-induced DNA damage. To evaluate these observations, we examined the effect of altered H3K79 methylation patterns on ...

journal_title：Nucleic acids research

authors： Rossodivita AA,Boudoures AL,Mecoli JP,Steenkiste EM,Karl AL,Vines EM,Cole AM,Ansbro MR,Thompson JS

更新日期：2014-06-01 00:00:00

abstract：:Proteins engage in highly selective interactions with their macromolecular partners. Sequence variants that alter protein binding affinity may cause significant perturbations or complete abolishment of function, potentially leading to diseases. There exists a persistent need to develop a mechanistic understanding of i...

journal_title：Nucleic acids research

authors： Li M,Simonetti FL,Goncearenco A,Panchenko AR

更新日期：2016-07-08 00:00:00

abstract：:The wobble uridine of certain bacterial and mitochondrial tRNAs is modified, at position 5, through an unknown reaction pathway that utilizes the evolutionarily conserved MnmE and GidA proteins. The resulting modification (a methyluridine derivative) plays a critical role in decoding NNG/A codons and reading frame mai...

journal_title：Nucleic acids research

authors： Moukadiri I,Prado S,Piera J,Velázquez-Campoy A,Björk GR,Armengod ME

更新日期：2009-11-01 00:00:00

abstract：:A very mild and efficient procedure has been developed for the preparation of C-5 substituted deoxyuridines. The substituent carries a masked primary aliphatic amino group. These compounds are readily converted into their phosphoramidites and can be used to prepare oligonucleotides carrying one or more aliphatic amino...

journal_title：Nucleic acids research

authors： Haralambidis J,Chai M,Tregear GW

更新日期：1987-06-25 00:00:00

abstract：:Defined DNA substrates containing discrete abasic sites or paired abasic sites set 1, 3, 5 and 7 bases apart on opposite strands were constructed to examine the reactivity of S1, mung bean and P1 nucleases towards abasic sites. None of the enzymes acted on the substrate containing discrete abasic sites. Under conditio...

journal_title：Nucleic acids research

authors： Chaudhry MA,Weinfeld M

更新日期：1995-10-11 00:00:00