The guanine-rich fragile X chromosome repeats are reluctant to form tetraplexes.

Abstract:

:Using circular dichroism spectroscopy, UV absorption spectroscopy and polyacrylamide gel electrophoresis, we studied conformational properties of guanine-rich DNA strands of the fragile X chromosome repeats d(GGC)n, d(GCG)n and d(CGG)n, with n = 2, 4, 8 and 16. These strands are generally considered in the literature to form guanine tetraplexes responsible for the repeat expansion. However, we show in this paper that the repeats are reluctant to form tetraplexes. At physiological concentrations of either Na+ or K+ ions, the hexamers and dodecamers associate to form homoduplexes and the longer repeats generate homoduplexes and hairpins. The tetraplexes are rarely observed being relatively most stable with d(GGC)n and least stable with d(GCG)n. The tetraplexes are exclusively formed in the presence of K+ ions, at salt concentrations higher than physiological, more easily at higher than physiological temperatures, and they arise with extremely long kinetics (even days). Moreover, the capability to form tetraplexes sharply diminishes with the oligonucleotide length. These facts make the concept of the tetraplex appearance in this motif in vivo very improbable. Rather, a hairpin of the fragile X repeats, whose stability increases with the repeat length, is the probable structure responsible for the repeat expansion in genomes.

journal_name

Nucleic Acids Res

journal_title

Nucleic acids research

authors

Fojtík P,Kejnovská I,Vorlícková M

doi

10.1093/nar/gkh179

keywords:

subject

Has Abstract

pub_date

2004-01-12 00:00:00

pages

298-306

issue

1

eissn

0305-1048

issn

1362-4962

pii

32/1/298

journal_volume

32

pub_type

杂志文章
  • Formation of stress-specific p53 binding patterns is influenced by chromatin but not by modulation of p53 binding affinity to response elements.

    abstract::The p53 protein is crucial for adapting programs of gene expression in response to stress. Recently, we revealed that this occurs partly through the formation of stress-specific p53 binding patterns. However, the mechanisms that generate these binding patterns remain largely unknown. It is not established whether the ...

    journal_title:Nucleic acids research

    pub_type: 杂志文章

    doi:10.1093/nar/gkq1209

    authors: Millau JF,Bandele OJ,Perron J,Bastien N,Bouchard EF,Gaudreau L,Bell DA,Drouin R

    更新日期:2011-04-01 00:00:00

  • Intertwined pathways for Argonaute-mediated microRNA biogenesis in Drosophila.

    abstract::Although Dicer is essential for general microRNA (miRNA) biogenesis, vertebrate mir-451 is Dicer independent. Instead, its short pre-miRNA hairpin is 'sliced' by Ago2, then 3'-resected into mature miRNAs. Here, we show that Drosophila cells and animals generate functional small RNAs from mir-451-type precursors. Howev...

    journal_title:Nucleic acids research

    pub_type: 杂志文章

    doi:10.1093/nar/gkt1038

    authors: Yang JS,Smibert P,Westholm JO,Jee D,Maurin T,Lai EC

    更新日期:2014-02-01 00:00:00

  • Characterization of long G4-rich enhancer-associated genomic regions engaging in a novel loop:loop 'G4 Kissing' interaction.

    abstract::Mammalian antibody switch regions (∼1500 bp) are composed of a series of closely neighboring G4-capable sequences. Whereas numerous structural and genome-wide analyses of roles for minimal G4s in transcriptional regulation have been reported, Long G4-capable regions (LG4s)-like those at antibody switch regions-remain ...

    journal_title:Nucleic acids research

    pub_type: 杂志文章

    doi:10.1093/nar/gkaa357

    authors: Williams JD,Houserova D,Johnson BR,Dyniewski B,Berroyer A,French H,Barchie AA,Bilbrey DD,Demeis JD,Ghee KR,Hughes AG,Kreitz NW,McInnis CH,Pudner SC,Reeves MN,Stahly AN,Turcu A,Watters BC,Daly GT,Langley RJ,Gillesp

    更新日期:2020-06-19 00:00:00

  • The new NHGRI-EBI Catalog of published genome-wide association studies (GWAS Catalog).

    abstract::The NHGRI-EBI GWAS Catalog has provided data from published genome-wide association studies since 2008. In 2015, the database was redesigned and relocated to EMBL-EBI. The new infrastructure includes a new graphical user interface (www.ebi.ac.uk/gwas/), ontology supported search functionality and an improved curation ...

    journal_title:Nucleic acids research

    pub_type: 杂志文章

    doi:10.1093/nar/gkw1133

    authors: MacArthur J,Bowler E,Cerezo M,Gil L,Hall P,Hastings E,Junkins H,McMahon A,Milano A,Morales J,Pendlington ZM,Welter D,Burdett T,Hindorff L,Flicek P,Cunningham F,Parkinson H

    更新日期:2017-01-04 00:00:00

  • The PARP promoter of Trypanosoma brucei is developmentally regulated in a chromosomal context.

    abstract::African trypanosomes are extracellular protozoan parasites that are transmitted from one mammalian host to the next by tsetse flies. Bloodstream forms express variant surface glycoprotein (VSG); the tsetse fly (procyclic) forms express instead the procyclic acidic repetitive protein (PARP). PARP mRNA is abundant in pr...

    journal_title:Nucleic acids research

    pub_type: 杂志文章

    doi:10.1093/nar/24.7.1202

    authors: Biebinger S,Rettenmaier S,Flaspohler J,Hartmann C,Peña-Diaz J,Wirtz LE,Hotz HR,Barry JD,Clayton C

    更新日期:1996-04-01 00:00:00

  • The role of zinc finger linkers in p43 and TFIIIA binding to 5S rRNA and DNA.

    abstract::Transcription factor IIIA (TFIIIA) and p43 zinc finger protein form distinct complexes with 5S ribosomal RNA in Xenopus oocytes. Additionally, TFIIIA binds the internal promoter of the 5S RNA gene and supports assembly of a transcription initiation complex. Both proteins have nine tandemly repeated zinc fingers with a...

    journal_title:Nucleic acids research

    pub_type: 杂志文章

    doi:10.1093/nar/26.3.703

    authors: Ryan RF,Darby MK

    更新日期:1998-02-01 00:00:00

  • The basidiomycete Lentinus edodes linear mitochondrial DNA plasmid contains a segment exhibiting a high autonomously replicating sequence activity in Saccharomyces cerevisiae.

    abstract::A linear DNA plasmid, designated pLLE1, has been isolated from a mitochondrial fraction of a strain of Lentinus edodes. pLLE1(11.0 kbp) was sensitive to the 3'----5'-acting exonuclease III and resistant to the 5'----3'-acting lambda exonuclease. It showed no homology with mitochondrial and nuclear genomic DNAs of plas...

    journal_title:Nucleic acids research

    pub_type: 杂志文章

    doi:10.1093/nar/18.6.1395

    authors: Katayose Y,Kajiwara S,Shishido K

    更新日期:1990-03-25 00:00:00

  • An improved procedure for derivatization of controlled-pore glass beads for solid-phase oligonucleotide synthesis.

    abstract::A simplified and economical method for the attachment of 2'-deoxyribo, ribo and arabinonucleosides onto long-chain alkylamidopropanoic acid controlled-pore glass (LCAAP-CPG, P-3) is described. In this procedure, 5'-O-tritylated nucleosides are coupled directly to LCAAP-CPG in excellent yields using 1-(3-dimethylaminop...

    journal_title:Nucleic acids research

    pub_type: 杂志文章

    doi:10.1093/nar/18.13.3813

    authors: Damha MJ,Giannaris PA,Zabarylo SV

    更新日期:1990-07-11 00:00:00

  • PrankWeb: a web server for ligand binding site prediction and visualization.

    abstract::PrankWeb is an online resource providing an interface to P2Rank, a state-of-the-art method for ligand binding site prediction. P2Rank is a template-free machine learning method based on the prediction of local chemical neighborhood ligandability centered on points placed on a solvent-accessible protein surface. Points...

    journal_title:Nucleic acids research

    pub_type: 杂志文章

    doi:10.1093/nar/gkz424

    authors: Jendele L,Krivak R,Skoda P,Novotny M,Hoksza D

    更新日期:2019-07-02 00:00:00

  • Divalent metal-dependent catalysis and cleavage specificity of CSP41, a chloroplast endoribonuclease belonging to the short chain dehydrogenase/reductase superfamily.

    abstract::CSP41 is a ubiquitous chloroplast endoribonuclease belonging to the short chain dehydrogenase/reductase (SDR) superfamily. To help elucidate the role of CSP41 in chloroplast gene regulation, the mechanisms that determine its substrate recognition and catalytic activity were investigated. A divalent metal is required f...

    journal_title:Nucleic acids research

    pub_type: 杂志文章

    doi:10.1093/nar/gkg640

    authors: Bollenbach TJ,Stern DB

    更新日期:2003-08-01 00:00:00

  • Expanded molecular diversity generation during directed evolution by trinucleotide exchange (TriNEx).

    abstract::Trinucleotide exchange (TriNEx) is a method for generating novel molecular diversity during directed evolution by random substitution of one contiguous trinucleotide sequence for another. Single trinucleotide sequences were deleted at random positions in a target gene using the engineered transposon MuDel that were su...

    journal_title:Nucleic acids research

    pub_type: 杂志文章

    doi:10.1093/nar/gkn358

    authors: Baldwin AJ,Busse K,Simm AM,Jones DD

    更新日期:2008-08-01 00:00:00

  • A physical map of the genome of Mycoplasma mycoides subspecies mycoides Y with some functional loci.

    abstract::A physical map is presented for the 1200 kb genome of Mycoplasma mycoides subsp. mycoides Y, locating 32 cleavage sites for 8 restriction endonucleases. The large restriction fragments involved were separated and sized by pulsed-field agarose gel electrophoresis. Their locations on the map were determined by probing S...

    journal_title:Nucleic acids research

    pub_type: 杂志文章

    doi:10.1093/nar/16.13.6027

    authors: Pyle LE,Finch LR

    更新日期:1988-07-11 00:00:00

  • Synthesis and hybridization analysis of a small library of peptide-oligonucleotide conjugates.

    abstract::A small library of 49 peptide-oligonucleotide conjugates were synthesized to explore the influence of various peptide side chains on the hybridization properties of the DNA. An invariant 8mer oligonucleotide was coupled to a peptide portion that contained a five residue variable region composed of the cationic amino a...

    journal_title:Nucleic acids research

    pub_type: 杂志文章

    doi:10.1093/nar/26.13.3136

    authors: Harrison JG,Balasubramanian S

    更新日期:1998-07-01 00:00:00

  • Repressor CopG prevents access of RNA polymerase to promoter and actively dissociates open complexes.

    abstract::Replication of the promiscuous plasmid pMV158 requires expression of the initiator repB gene, which is controlled by the repressor CopG. Genes repB and copG are co-transcribed from promoter P(cr). We have studied the interactions between RNA polymerase, CopG and the promoter to elucidate the mechanism of repression by...

    journal_title:Nucleic acids research

    pub_type: 杂志文章

    doi:10.1093/nar/gkp503

    authors: Hernández-Arriaga AM,Rubio-Lepe TS,Espinosa M,del Solar G

    更新日期:2009-08-01 00:00:00

  • Prokaryotic 5'-3' exonucleases share a common core structure with gamma-delta resolvase.

    abstract::The three dimensional crystal structure of T5 5'-3' exonuclease was compared with that of two other members of the 5'-3' exonuclease family: T4 ribonuclease H and the N-terminal domain of Thermus aquaticus DNA polymerase I. Though these structures were largely similar, some regions of these enzymes show evidence of si...

    journal_title:Nucleic acids research

    pub_type: 杂志文章

    doi:10.1093/nar/25.21.4224

    authors: Artymiuk PJ,Ceska TA,Suck D,Sayers JR

    更新日期:1997-11-01 00:00:00

  • Quantitation of RNA editing substrates, products and potential intermediates: implications for developmental regulation.

    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

    pub_type: 杂志文章

    doi:10.1093/nar/23.4.708

    authors: Riley GR,Myler PJ,Stuart K

    更新日期:1995-02-25 00:00:00

  • A highly conserved RNA folding region coincident with the Rev response element of primate immunodeficiency viruses.

    abstract::A series of unusual folding regions (UFR) immediately 3' to the cleavage site of the outer membrane protein (OMP) and transmembrane protein (TMP) were detected in the envelope gene RNA of the human immunodeficiency virus (HIV-1, HIV-2) and simian immunodeficiency virus (SIV) by an extensive Monte Carlo simulation. The...

    journal_title:Nucleic acids research

    pub_type: 杂志文章

    doi:10.1093/nar/18.6.1613

    authors: Le SY,Malim MH,Cullen BR,Maizel JV

    更新日期:1990-03-25 00:00:00

  • Long-range correlations in the mechanics of small DNA circles under topological stress revealed by multi-scale simulation.

    abstract::It is well established that gene regulation can be achieved through activator and repressor proteins that bind to DNA and switch particular genes on or off, and that complex metabolic networks determine the levels of transcription of a given gene at a given time. Using three complementary computational techniques to s...

    journal_title:Nucleic acids research

    pub_type: 杂志文章

    doi:10.1093/nar/gkw815

    authors: Sutthibutpong T,Matek C,Benham C,Slade GG,Noy A,Laughton C,K Doye JP,Louis AA,Harris SA

    更新日期:2016-11-02 00:00:00

  • Optogenetic control of Neisseria meningitidis Cas9 genome editing using an engineered, light-switchable anti-CRISPR protein.

    abstract::Optogenetic control of CRISPR-Cas9 systems has significantly improved our ability to perform genome perturbations in living cells with high precision in time and space. As new Cas orthologues with advantageous properties are rapidly being discovered and engineered, the need for straightforward strategies to control th...

    journal_title:Nucleic acids research

    pub_type: 杂志文章

    doi:10.1093/nar/gkaa1198

    authors: Hoffmann MD,Mathony J,Upmeier Zu Belzen J,Harteveld Z,Aschenbrenner S,Stengl C,Grimm D,Correia BE,Eils R,Niopek D

    更新日期:2020-12-16 00:00:00

  • Triple helix formation at distant sites: hybrid oligonucleotides containing a polymeric linker.

    abstract::An oligonucleotide hybrid is described which possesses two triple helix forming oligonucleotides which have been connected by a flexible polymeric linker chain. As a prototype, binding of this class of oligonucleotide to duplex DNA has been studied using a segment of the HSV-1 D-glycoprotein promoter, which possesses ...

    journal_title:Nucleic acids research

    pub_type: 杂志文章

    doi:10.1093/nar/21.20.4810

    authors: Kessler DJ,Pettitt BM,Cheng YK,Smith SR,Jayaraman K,Vu HM,Hogan ME

    更新日期:1993-10-11 00:00:00

  • An error-prone family Y DNA polymerase (DinB homolog from Sulfolobus solfataricus) uses a 'steric gate' residue for discrimination against ribonucleotides.

    abstract::DNA polymerases of the A and B families, and reverse transcriptases, share a common mechanism for preventing incorporation of ribonucleotides: a highly conserved active site residue obstructing the position that would be occupied by a 2' hydroxyl group on the incoming nucleotide. In the family Y (lesion bypass) polyme...

    journal_title:Nucleic acids research

    pub_type: 杂志文章

    doi:10.1093/nar/gkg417

    authors: DeLucia AM,Grindley ND,Joyce CM

    更新日期:2003-07-15 00:00:00

  • Characterization of the DNA-binding site repertoire for the Epstein-Barr virus transcription factor R.

    abstract::The Epstein-Barr virus gene BRLF1 encodes the transcription factor R, which is a sequence-specific DNA-binding protein important for the switch from latency to a productive cycle. We have defined a repertoire of specific R-binding sites using a GST-R fusion protein and a pool of 23 bp random DNA sequences. The R-bound...

    journal_title:Nucleic acids research

    pub_type: 杂志文章

    doi:10.1093/nar/22.7.1172

    authors: Gruffat H,Sergeant A

    更新日期:1994-04-11 00:00:00

  • Crosstalk between transposase subunits during cleavage of the mariner transposon.

    abstract::Mariner transposition is a complex reaction that involves three recombination sites and six strand breaking and joining reactions. This requires precise spatial and temporal coordination between the different components to ensure a productive outcome and minimize genomic instability. We have investigated how the cleav...

    journal_title:Nucleic acids research

    pub_type: 杂志文章

    doi:10.1093/nar/gku172

    authors: Claeys Bouuaert C,Walker N,Liu D,Chalmers R

    更新日期:2014-05-01 00:00:00

  • Happy mapping: a proposal for linkage mapping the human genome.

    abstract::A theoretical approach for linkage mapping the genome of any higher eukaryote is described. It uses the polymerase chain reaction, oligonucleotides of random sequence and single haploid cells. Markers are defined and then the DNA of a single sperm is broken at random (eg by gamma-rays) and physically split into 3 aliq...

    journal_title:Nucleic acids research

    pub_type: 杂志文章

    doi:10.1093/nar/17.17.6795

    authors: Dear PH,Cook PR

    更新日期:1989-09-12 00:00:00

  • Weak interactions in higher-order chromatin organization.

    abstract::The detailed principles of the hierarchical folding of eukaryotic chromosomes have been revealed during the last two decades. Along with structures composing three-dimensional (3D) genome organization (chromatin compartments, topologically associating domains, chromatin loops, etc.), the molecular mechanisms that are ...

    journal_title:Nucleic acids research

    pub_type: 杂志文章,评审

    doi:10.1093/nar/gkaa261

    authors: Kantidze OL,Razin SV

    更新日期:2020-05-21 00:00:00

  • A small nucleolar RNA functions in rRNA processing in Caenorhabditis elegans.

    abstract::CeR-2 RNA is one of the newly identified Caenorhabditis elegans noncoding RNAs (ncRNAs). The characterization of CeR-2 by RNomic studies has failed to classify it into any known ncRNA family. In this study, we examined the spatiotemporal expression patterns of CeR-2 to gain insight into its function. CeR-2 is expresse...

    journal_title:Nucleic acids research

    pub_type: 杂志文章

    doi:10.1093/nar/gkq335

    authors: Hokii Y,Sasano Y,Sato M,Sakamoto H,Sakata K,Shingai R,Taneda A,Oka S,Himeno H,Muto A,Fujiwara T,Ushida C

    更新日期:2010-09-01 00:00:00

  • Force spectroscopy reveals the DNA structural dynamics that govern the slow binding of Actinomycin D.

    abstract::Actinomycin D (ActD) is a small molecule with strong antibiotic and anticancer activity. However, its biologically relevant DNA-binding mechanism has never been resolved, with some studies suggesting that the primary binding mode is intercalation, and others suggesting that single-stranded DNA binding is most importan...

    journal_title:Nucleic acids research

    pub_type: 杂志文章

    doi:10.1093/nar/gks069

    authors: Paramanathan T,Vladescu I,McCauley MJ,Rouzina I,Williams MC

    更新日期:2012-06-01 00:00:00

  • Transcript quantitation in total yeast cellular RNA using kinetic PCR.

    abstract::Kinetically monitored, reverse transcriptase-initiated PCR (kinetic RT-PCR, kRT-PCR) is a novel application of kinetic PCR for high throughput transcript quantitation in total cellular RNA. The assay offers the simplicity and flexibility of an enzyme assay with distinct advantages over DNA microarray hybridization and...

    journal_title:Nucleic acids research

    pub_type: 杂志文章

    doi:10.1093/nar/28.2.e2

    authors: Kang JJ,Watson RM,Fisher ME,Higuchi R,Gelfand DH,Holland MJ

    更新日期:2000-01-15 00:00:00

  • NMR structure of a vestigial nuclease provides insight into the evolution of functional transitions in viral dsDNA packaging motors.

    abstract::Double-stranded DNA viruses use ATP-powered molecular motors to package their genomic DNA. To ensure efficient genome encapsidation, these motors regulate functional transitions between initiation, translocation, and termination modes. Here, we report structural and biophysical analyses of the C-terminal domain of the...

    journal_title:Nucleic acids research

    pub_type: 杂志文章

    doi:10.1093/nar/gkaa874

    authors: Mahler BP,Bujalowski PJ,Mao H,Dill EA,Jardine PJ,Choi KH,Morais MC

    更新日期:2020-11-18 00:00:00

  • Site-directed integration of the cre gene mediated by Cre recombinase using a combination of mutant lox sites.

    abstract::The Cre-lox system is an important tool for genetic manipulation. To promote integrative reactions, two strategies using mutant lox sites have been developed. One is the left element/right element (LE/RE)-mutant strategy and the other is the cassette exchange strategy using heterospecific lox sites such as lox511 or l...

    journal_title:Nucleic acids research

    pub_type: 杂志文章

    doi:10.1093/nar/gnf102

    authors: Araki K,Araki M,Yamamura K

    更新日期:2002-10-01 00:00:00