Effects of nucleoid proteins on DNA repression loop formation in Escherichia coli.

abstract：:In highly oncogenic adenovirus (Ad) 12-transformed cells, major histocompatibility complex (MHC) class I gene expression is down-regulated by the products of the viral E1A oncogene at the level of initiation of transcription. However, class I gene expression is unaltered or elevated in non-oncogenic Ad2- or Ad5-transf...

journal_title：Nucleic acids research

authors： Proffitt JL,Sharma E,Blair GE

更新日期：1994-11-11 00:00:00

abstract：:It has been proposed that DNA multiply damaged sites (MDS), where more than one moiety in a local region ( approximately 1 helical turn, 10 bp) of the DNA is damaged, are lesions of enhanced biological significance. However, other than indirect measures, there are few analytical techniques that allow direct detection ...

journal_title：Nucleic acids research

authors： Bowman KJ,Pla RL,Guichard Y,Farmer PB,Jones GD

更新日期：2001-10-15 00:00:00

abstract：:A comparison of gene structure, sequence, and transcription pattern of heat shock loci 93D of Drosophila melanogaster and 48B of Drosophila hydei has been performed. Both heat shock loci consist of an unique region that is flanked by an internally repetitive element. Different members of these elements are highly cons...

journal_title：Nucleic acids research

authors： Ryseck RP,Walldorf U,Hoffmann T,Hovemann B

更新日期：1987-04-24 00:00:00

abstract：:The bZip proteins GCN4 and C/EBP differ in their DNA binding specificities: GCN4 binds well to the pseudopalindromic AP1 site 5'-A4T3G2A1C0T1C2'A3'T4'-3' and to the palindromic ATF/CREB sequence 5'-A4T3G2A1-C0*G0'T1'C2'A3'T4'-3'; C/EBP preferentially recognizes the palindromic sequence 5'-A4T3T2G1C0*G0'C1'A2'-A3'T4'-3...

journal_title：Nucleic acids research

authors： Koldin B,Suckow M,Seydel A,von Wilcken-Bergmann B,Müller-Hill B

更新日期：1995-10-25 00:00:00

abstract：:Enhancers are a class of cis-regulatory elements that can increase gene transcription by forming loops in intergenic regions, introns and exons. Enhancers, as well as their associated target genes, and transcription factors (TFs) that bind to them, are highly associated with human disease and biological processes. Alt...

journal_title：Nucleic acids research

authors： Bai X,Shi S,Ai B,Jiang Y,Liu Y,Han X,Xu M,Pan Q,Wang F,Wang Q,Zhang J,Li X,Feng C,Li Y,Wang Y,Song Y,Feng K,Li C

更新日期：2020-01-08 00:00:00

abstract：:U6 RNA is a member of a class of small abundant stable nuclear RNAs that are essential for splicing. In all species examined so far, the U6 RNA is a RNA polymerase III transcript. The U6 gene of the fission yeast Schizosaccharomyces pombe is unusual in that it is interrupted by an intron whose structure is similar to ...

journal_title：Nucleic acids research

authors： Potashkin J,Frendewey D

更新日期：1989-10-11 00:00:00

abstract：:Sequences preceding the minimal promoter play a role in the differential expression of the Xenopus somatic and oocyte-type 5S RNA genes. In this report, the somatic sequences between -32 and +37 are shown to increase transcriptional activity in microinjected embryos, yet have little to no effect in microinjected oocyt...

journal_title：Nucleic acids research

authors： Reynolds WF

更新日期：1989-11-25 00:00:00

abstract：:In neural stem cells (NSCs), the balance between stem cell maintenance and neuronal differentiation depends on cell-fate determinants such as TRIM32. Previously, we have shown that TRIM32 associates with the RNA-induced silencing complex and increases the activity of microRNAs such as Let-7a. However, the exact mechan...

journal_title：Nucleic acids research

authors： Nicklas S,Okawa S,Hillje AL,González-Cano L,Del Sol A,Schwamborn JC

更新日期：2015-03-11 00:00:00

abstract：:The human 7SL RNA component of the signal recognition particle can be separated into four major conformers by nondenaturing polyacrylamide gel electrophoresis. We have investigated what sequences give 7SL RNA the property to exist in different conformations. The human 7SL gene 7L30.1 was mutagenized using the random l...

journal_title：Nucleic acids research

authors： Zwieb C,Ullu E

更新日期：1986-06-11 00:00:00

abstract：:Bacterial genomes encode a plethora of small RNAs (sRNAs), which are heterogeneous in size, structure and function. Most sRNAs act as post-transcriptional regulators by means of specific base pairing interactions with the 5'-untranslated region of mRNA transcripts, thereby modifying the stability of the target transcr...

journal_title：Nucleic acids research

authors： Eggenhofer F,Tafer H,Stadler PF,Hofacker IL

更新日期：2011-07-01 00:00:00

abstract：:Many bacterial plasmids replicate by an asymmetric rolling-circle mechanism that requires sequence-specific recognition for initiation, nicking of one of the template DNA strands and unwinding of the duplex prior to subsequent leading strand DNA synthesis. Nicking is performed by a replication-initiation protein (Rep)...

journal_title：Nucleic acids research

authors： Pastrana CL,Carrasco C,Akhtar P,Leuba SH,Khan SA,Moreno-Herrero F

更新日期：2016-10-14 00:00:00

abstract：:Under-modified E. coli tRNATyr that contains 7-(aminomethyl)-7-deazaguanosine in place of Q nucleoside can be chemically modified by dansyl chloride under neutral conditions. Fluorescent labelling specifically occurred only in the 7-(aminomethyl)-7-deazaguanine moiety. The modified tRNATyr was found to be active both ...

journal_title：Nucleic acids research

authors： Kasai H,Shindo-Okada N,Noguchi S,Nishimura S

更新日期：1979-09-11 00:00:00

abstract：:The four Hu [embryonic lethal abnormal vision-like (ELAVL)] protein family members regulate alternative splicing by binding to U-rich sequences surrounding target exons and affecting the interaction of the splicing machinery and/or local chromatin modifications. Each of the Hu proteins contains a divergent N-terminus,...

journal_title：Nucleic acids research

authors： Hinman MN,Zhou HL,Sharma A,Lou H

更新日期：2013-05-01 00:00:00

abstract：:We describe conditions for producing uninterrupted expanded CTG repeats consisting of up to 2000 repeats using 29 DNA polymerase. Previously, generation of such repeats was hindered by CTG repeat instability in plasmid vectors maintained in Escherichia coli and poor in vitro ligation of CTG repeat concatemers due to s...

journal_title：Nucleic acids research

authors： Osborne RJ,Thornton CA

更新日期：2008-03-01 00:00:00

abstract：:Kinetoplast mitochondrial RNA editing is the developmentally regulated post-transcriptional process of uridine insertion and deletion in mRNAs directed by short guide RNAs (gRNAs), which creates functional mRNAs. Two mechanisms are proposed: transesterification which predicts gRNA/mRNA chimeric intermediates, and enzy...

journal_title：Nucleic acids research

authors： Riley GR,Myler PJ,Stuart K

更新日期：1995-02-25 00:00:00

abstract：:The irradiation of native or unmodified yeast tRNA(Phe) by short wavelength UV light (260 nM) results in an intramolecular crosslink that has been mapped to occur between C48 in the variable loop and U59 in the T loop. Photo-reversibility of the crosslink and the absence of fluorescent photo adducts suggest that the c...

journal_title：Nucleic acids research

authors： Behlen LS,Sampson JR,Uhlenbeck OC

更新日期：1992-08-11 00:00:00

abstract：:A 14 kb maize DNA fragment carrying nuclear rRNA genes and spacer regions was isolated and characterised by restriction enzyme mapping. A complete 3020 bp long external spacer region was sequenced and revealed 9 tandemly arranged 200 bp long repeat units with high homology. The repeat units lie upstream from two promi...

journal_title：Nucleic acids research

authors： Toloczyki C,Feix G

更新日期：1986-06-25 00:00:00

abstract：:The methyltransferase, M.EcoKI, recognizes the DNA sequence 5'-AACNNNNNNGTGC-3' and methylates adenine at the underlined positions. DNA methylation has been shown by crystallography to occur via a base flipping mechanism and is believed to be a general mechanism for all methyltransferases. If no structure is available...

journal_title：Nucleic acids research

authors： Su TJ,Connolly BA,Darlington C,Mallin R,Dryden DT

更新日期：2004-04-23 00:00:00

abstract：:p53 as an effector of nucleolar stress is well defined, but p53 independent mechanisms are largely unknown. Like p53, the NF-κB transcription factor plays a critical role in maintaining cellular homeostasis under stress. Many stresses that stimulate NF-κB also disrupt nucleoli. However, the link between nucleolar func...

journal_title：Nucleic acids research

authors： Chen J,Lobb IT,Morin P,Novo SM,Simpson J,Kennerknecht K,von Kriegsheim A,Batchelor EE,Oakley F,Stark LA

更新日期：2018-07-06 00:00:00

abstract：:We have compared the properties of the poly(rA).oligo(dT) complex with those of the poly(rU).oligo(dA)n complex. Three main differences were found. First, poly(rA) and oligo(dT)n do not form a complex in concentrations of CsCl exceeding 2 M because the poly(rA) is insoluble in high salt. If the complex is made in low ...

journal_title：Nucleic acids research

authors： Mol JN,Borst P

更新日期：1976-04-01 00:00:00

abstract：:We have constructed a complete, five-enzyme restriction map of the genome of the archaeon Halobacterium sp. GRB, based on a set of 84 overlapping cosmid clones. Fewer than 30 kbp, in three gaps, remain uncloned. The genome consists of five replicons: a chromosome (2038 kbp) and four plasmids (305, 90, 37, and 1.8 kbp)...

journal_title：Nucleic acids research

authors： St Jean A,Trieselmann BA,Charlebois RL

更新日期：1994-04-25 00:00:00

abstract：:Not I linking clones contain sequences flanking Not I recognition sites and were previously shown to be tightly associated with CpG islands and genes. To directly assess the value of Not I clones in genome research, high density grids with 50 000 Not I linking clones originating from six representative Not I linking l...

journal_title：Nucleic acids research

authors： Zabarovsky ER,Gizatullin R,Podowski RM,Zabarovska VV,Xie L,Muravenko OV,Kozyrev S,Petrenko L,Skobeleva N,Li J,Protopopov A,Kashuba V,Ernberg I,Winberg G,Wahlestedt C

更新日期：2000-04-01 00:00:00

abstract：:In metazoan cells, only a limited number of mini chromosome maintenance (MCM) complexes are fired during S phase, while the majority remain dormant. Several methods have been used to map replication origins, but such methods cannot identify dormant origins. Herein, we determined MCM7-binding sites in human cells using...

journal_title：Nucleic acids research

authors： Sugimoto N,Maehara K,Yoshida K,Ohkawa Y,Fujita M

更新日期：2018-07-27 00:00:00

abstract：:Adenine, thymine and cytosine PNA monomers have been prepared using 3-amino-1,2-propanediol as a starting material. The benzoyl group was used to protect the exocyclic amines of the heterocyclic bases of A and C PNA monomers and the backbone primary amine was protected with the monomethoxytrityl group. The thymine and...

journal_title：Nucleic acids research

authors： Finn PJ,Gibson NJ,Fallon R,Hamilton A,Brown T

更新日期：1996-09-01 00:00:00

abstract：:The interplay between aromatic stacking and hydrogen bonding in nucleobases has been investigated via high-level quantum chemical calculations. The experimentally observed stacking arrangement between consecutive bases in DNA and RNA/DNA double helices is shown to enhance their hydrogen bonding ability as opposed to g...

journal_title：Nucleic acids research

authors： Mignon P,Loverix S,Steyaert J,Geerlings P

更新日期：2005-03-23 00:00:00

abstract：:The pyrrole-imidazole (Py-Im) triamide-cyclopropa pyrroloindole (CPI) conjugates ImPyImLDu86 (7) and ImImPyLDu86 (14) were synthesized and their alkylating activities and inhibitory effects on DNA hydrolysis by restriction endonucleases were examined. Sequencing gel analysis demonstrated that conjugates 7 and 14 speci...

journal_title：Nucleic acids research

authors： Fujimoto K,Iida H,Kawakami M,Bando T,Tao ZF,Sugiyama H

更新日期：2002-09-01 00:00:00

abstract：:We describe improve enzymatic methods for sequencing method for sequencing DNA. They are based on partial digestion of duplex DNA with exonuclease III to produce DNA molecules with 3' ends shortened to varying lengths, followed by repair synthesis to extend and label the 3' ends. After asymmetrical cleavage of the DNA...

journal_title：Nucleic acids research

authors： Guo LH,Wu R

更新日期：1982-03-25 00:00:00

abstract：:Abasic substitutions in the non-template strand and promoter sequence changes were made to assess the roles of various promoter features in sigma70 holoenzyme interactions with fork junction probes. Removal of -10 element non-template single strand bases, leaving the phosphodiester backbone intact, did not interfere w...

journal_title：Nucleic acids research

authors： Fenton MS,Gralla JD

更新日期：2003-06-01 00:00:00

abstract：:In human cells DNA damage caused by UV light is mainly repaired by the nucleotide excision repair pathway. This mechanism involves dual incisions on both sides of the damage catalyzed by two nucleases. In mammalian cells XPG cleaves 3' of the DNA lesion while the ERCC1-XPF complex makes the 5' incision. The amino acid...

journal_title：Nucleic acids research

authors： Rödel C,Jupitz T,Schmidt H

更新日期：1997-07-15 00:00:00

abstract：:Eukaryotic cells use numerous pathways to regulate RNA production, localization and stability. Several of these pathways are controlled by ribonucleases. The essential ribonuclease, Dis3, plays important roles in distinct RNA metabolic pathways. Despite much progress in understanding general characteristics of the Dis...

journal_title：Nucleic acids research

authors： Mamolen M,Smith A,Andrulis ED

更新日期：2010-09-01 00:00:00