Telomeric circles are abundant in the stn1-M1 mutant that maintains its telomeres through recombination.

Abstract:

:Some human cancers maintain their telomeres using the alternative lengthening of telomeres (ALT) mechanism; a process thought to involve recombination. Different types of recombinational telomere elongation pathways have been identified in yeasts. In senescing yeast telomerase deletion (ter1-Delta) mutants with very short telomeres, it has been hypothesized that copying a tiny telomeric circle (t-circle) by a rolling circle mechanism is the key event in telomere elongation. In other cases more closely resembling ALT cells, such as the stn1-M1 mutant of Kluyveromyces lactis, the telomeres appear to be continuously unstable and routinely reach very large sizes. By employing two-dimensional gel electrophoresis and electron microscopy, we show that stn1-M1 cells contain abundant double stranded t-circles ranging from approximately 100 to 30,000 bp in size. We also observed small single-stranded t-circles, specifically composed of the G-rich telomeric strand and tailed circles resembling rolling circle replication intermediates. The t-circles most likely arose from recombination events that also resulted in telomere truncations. The findings strengthen the possibility that t-circles contribute to telomere maintenance in stn1-M1 and ALT cells.

journal_name

Nucleic Acids Res

journal_title

Nucleic acids research

authors

Basenko EY,Cesare AJ,Iyer S,Griffith JD,McEachern MJ

doi

10.1093/nar/gkp814

subject

Has Abstract

pub_date

2010-01-01 00:00:00

pages

182-9

issue

1

eissn

0305-1048

issn

1362-4962

pii

gkp814

journal_volume

38

pub_type

杂志文章
  • DNA-protein π-interactions in nature: abundance, structure, composition and strength of contacts between aromatic amino acids and DNA nucleobases or deoxyribose sugar.

    abstract::Four hundred twenty-eight high-resolution DNA-protein complexes were chosen for a bioinformatics study. Although 164 crystal structures (38% of those searched) contained no interactions, 574 discrete π-contacts between the aromatic amino acids and the DNA nucleobases or deoxyribose were identified using strict criteri...

    journal_title:Nucleic acids research

    pub_type: 杂志文章

    doi:10.1093/nar/gku269

    authors: Wilson KA,Kellie JL,Wetmore SD

    更新日期:2014-06-01 00:00:00

  • Efficient reamplification of differential display products by transient ligation and thermal asymmetric PCR.

    abstract::A new method for specific reamplification of DDRT-PCR products is presented. After transient ligation of the primary DDRT-PCR fragments into a T-vector, the cDNAs of interest were reamplified by hemi-nested PCR and thermally asymmetric cycles. In contrast to the originally described protocol, this method of reamplific...

    journal_title:Nucleic acids research

    pub_type: 杂志文章

    doi:10.1093/nar/26.4.1130

    authors: Bonnet S,Prévot G,Bourgouin C

    更新日期:1998-02-15 00:00:00

  • The DNA dioxygenase ALKBH2 protects Arabidopsis thaliana against methylation damage.

    abstract::The Escherichia coli AlkB protein (EcAlkB) is a DNA repair enzyme which reverses methylation damage such as 1-methyladenine (1-meA) and 3-methylcytosine (3-meC). The mammalian AlkB homologues ALKBH2 and ALKBH3 display EcAlkB-like repair activity in vitro, but their substrate specificities are different, and ALKBH2 is ...

    journal_title:Nucleic acids research

    pub_type: 杂志文章

    doi:10.1093/nar/gks327

    authors: Meza TJ,Moen MN,Vågbø CB,Krokan HE,Klungland A,Grini PE,Falnes PØ

    更新日期:2012-08-01 00:00:00

  • WormNet v3: a network-assisted hypothesis-generating server for Caenorhabditis elegans.

    abstract::High-throughput experimental technologies gradually shift the paradigm of biological research from hypothesis-validation toward hypothesis-generation science. Translating diverse types of large-scale experimental data into testable hypotheses, however, remains a daunting task. We previously demonstrated that heterogen...

    journal_title:Nucleic acids research

    pub_type: 杂志文章

    doi:10.1093/nar/gku367

    authors: Cho A,Shin J,Hwang S,Kim C,Shim H,Kim H,Kim H,Lee I

    更新日期:2014-07-01 00:00:00

  • High efficiency, site-specific excision of a marker gene by the phage P1 cre-loxP system in the yellow fever mosquito, Aedes aegypti.

    abstract::The excision of specific DNA sequences from integrated transgenes in insects permits the dissection in situ of structural elements that may be important in controlling gene expression. Furthermore, manipulation of potential control elements in the context of a single integration site mitigates against insertion site i...

    journal_title:Nucleic acids research

    pub_type: 杂志文章

    doi:10.1093/nar/gng148

    authors: Jasinskiene N,Coates CJ,Ashikyan A,James AA

    更新日期:2003-11-15 00:00:00

  • A meta-analysis revealed insights into the sources, conservation and impact of microRNA 5'-isoforms in four model species.

    abstract::MicroRNA (miRNA) 5'-isoforms, or 5'-isomiRs, are small-RNA species that originate from the same genomic loci as the major miRNAs with their 5' ends shifted from the 5' ends of the miRNAs by a few nucleotides. Although 5'-isomiRs have been reported, their origins, properties and potential functions remain to be examine...

    journal_title:Nucleic acids research

    pub_type: 杂志文章,meta分析

    doi:10.1093/nar/gkt967

    authors: Xia J,Zhang W

    更新日期:2014-02-01 00:00:00

  • Homology modeling using parametric alignment ensemble generation with consensus and energy-based model selection.

    abstract::The accuracy of a homology model based on the structure of a distant relative or other topologically equivalent protein is primarily limited by the quality of the alignment. Here we describe a systematic approach for sequence-to-structure alignment, called 'K*Sync', in which alignments are generated by dynamic program...

    journal_title:Nucleic acids research

    pub_type: 杂志文章

    doi:10.1093/nar/gkl480

    authors: Chivian D,Baker D

    更新日期:2006-01-01 00:00:00

  • Protein synthesis in rabbit reticulocytes: characteristics of CO-eIF-2 protein complex.

    abstract::A high molecular weight reticulocyte protein factor, named Co-eIF-2, contains Co-eIF-2A, Co-eIF-2B, and Co-eIF-2C activities and stimulates Met-tRNAf binding to eIF-2 both in the presence and absence of Mg2+. Some characteristics of this stimulation in the absence of Mg2+ are: (1) Stimulation is most pronounced at low...

    journal_title:Nucleic acids research

    pub_type: 杂志文章

    doi:10.1093/nar/10.20.6501

    authors: Bagchi MK,Banerjee AC,Roy R,Chakrabarty I,Gupta NK

    更新日期:1982-10-25 00:00:00

  • HapZipper: sharing HapMap populations just got easier.

    abstract::The rapidly growing amount of genomic sequence data being generated and made publicly available necessitate the development of new data storage and archiving methods. The vast amount of data being shared and manipulated also create new challenges for network resources. Thus, developing advanced data compression techni...

    journal_title:Nucleic acids research

    pub_type: 杂志文章

    doi:10.1093/nar/gks709

    authors: Chanda P,Elhaik E,Bader JS

    更新日期:2012-11-01 00:00:00

  • The localization of tRNA4Glu genes from Drosophila melanogaster by "in situ" hybridization.

    abstract::Transfer RNAGlu4 was isolated from Drosophila melanogaster by affinity chromatography. The tRNA was iodinated "in vitro" with Na[25I] and hybridized "in situ" to salivary gland chromosomes from Drosophila. Subsequent autoradiography allowed the localization of the genes for tRNAGlu4 to the right arm of the second chro...

    journal_title:Nucleic acids research

    pub_type: 杂志文章

    doi:10.1093/nar/5.5.1465

    authors: Kubli E,Schmidt T

    更新日期:1978-05-01 00:00:00

  • The Bam repeats of the mouse genome belong in several superfamilies the longest of which is over 9 kb in size.

    abstract::Mouse DNA contains two equally abundant, homologous subfamilies of MspI 3.6 and 5 kb repeated fragments. The first subfamily corresponds to the previously described (1) Bam 4 kb repeats, the second one to Bam repeated fragments of higher molecular weight. These subfamilies account for the vast majority of long Bam rep...

    journal_title:Nucleic acids research

    pub_type: 杂志文章

    doi:10.1093/nar/12.3.1593

    authors: Meunier-Rotival M,Bernardi G

    更新日期:1984-02-10 00:00:00

  • Mechano-chemical kinetics of DNA replication: identification of the translocation step of a replicative DNA polymerase.

    abstract::During DNA replication replicative polymerases move in discrete mechanical steps along the DNA template. To address how the chemical cycle is coupled to mechanical motion of the enzyme, here we use optical tweezers to study the translocation mechanism of individual bacteriophage Phi29 DNA polymerases during processive...

    journal_title:Nucleic acids research

    pub_type: 杂志文章

    doi:10.1093/nar/gkv204

    authors: Morin JA,Cao FJ,Lázaro JM,Arias-Gonzalez JR,Valpuesta JM,Carrascosa JL,Salas M,Ibarra B

    更新日期:2015-04-20 00:00:00

  • Higher-order structure of bovine mitochondrial tRNA(Phe) lacking the 'conserved' GG and T psi CG sequences as inferred by enzymatic and chemical probing.

    abstract::Bovine mitochondrial (mt) phenylalanine tRNA (tRNA(Phe)), which lacks the 'conserved' GG and T psi YCG sequences, was efficiently purified by the selective hybridization method using a solid phase DNA probe. The entire nucleotide sequence of the tRNA, including modified nucleotides, was determined and its higher-order...

    journal_title:Nucleic acids research

    pub_type: 杂志文章

    doi:10.1093/nar/22.3.347

    authors: Wakita K,Watanabe Y,Yokogawa T,Kumazawa Y,Nakamura S,Ueda T,Watanabe K,Nishikawa K

    更新日期:1994-02-11 00:00:00

  • Binding site density enables paralog-specific activity of SLM2 and Sam68 proteins in Neurexin2 AS4 splicing control.

    abstract::SLM2 and Sam68 are splicing regulator paralogs that usually overlap in function, yet only SLM2 and not Sam68 controls the Neurexin2 AS4 exon important for brain function. Herein we find that SLM2 and Sam68 similarly bind to Neurexin2 pre-mRNA, both within the mouse cortex and in vitro. Protein domain-swap experiments ...

    journal_title:Nucleic acids research

    pub_type: 杂志文章

    doi:10.1093/nar/gkw1277

    authors: Danilenko M,Dalgliesh C,Pagliarini V,Naro C,Ehrmann I,Feracci M,Kheirollahi-Chadegani M,Tyson-Capper A,Clowry GJ,Fort P,Dominguez C,Sette C,Elliott DJ

    更新日期:2017-04-20 00:00:00

  • Ku heterodimer binds to both ends of the Werner protein and functional interaction occurs at the Werner N-terminus.

    abstract::The human Werner syndrome protein, WRN, is a member of the RecQ helicase family and contains 3'-->5' helicase and 3'-->5' exonuclease activities. Recently, we showed that the exonuclease activity of WRN is greatly stimulated by the human Ku heterodimer protein. We have now mapped this interaction physically and functi...

    journal_title:Nucleic acids research

    pub_type: 杂志文章

    doi:10.1093/nar/gkf482

    authors: Karmakar P,Snowden CM,Ramsden DA,Bohr VA

    更新日期:2002-08-15 00:00:00

  • Systematic screening of CTCF binding partners identifies that BHLHE40 regulates CTCF genome-wide distribution and long-range chromatin interactions.

    abstract::CTCF plays a pivotal role in mediating chromatin interactions, but it does not do so alone. A number of factors have been reported to co-localize with CTCF and regulate CTCF loops, but no comprehensive analysis of binding partners has been performed. This prompted us to identify CTCF loop participants and regulators b...

    journal_title:Nucleic acids research

    pub_type: 杂志文章

    doi:10.1093/nar/gkaa705

    authors: Hu G,Dong X,Gong S,Song Y,Hutchins AP,Yao H

    更新日期:2020-09-25 00:00:00

  • LOCnet and LOCtarget: sub-cellular localization for structural genomics targets.

    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

    authors: Nair R,Rost B

    更新日期:2004-07-01 00:00:00

  • Polymerization retardation isothermal amplification (PRIA): a strategy enables sensitively quantify genome-wide 5-methylcytosine oxides rapidly on handy instruments with nanoscale sample input.

    abstract::The current methods for quantifying genome-wide 5-methylcytosine (5mC) oxides are still scarce, mostly restricted with two limitations: assay sensitivity is seriously compromised with cost, assay time and sample input; epigenetic information is irreproducible during polymerase chain reaction (PCR) amplification withou...

    journal_title:Nucleic acids research

    pub_type: 杂志文章

    doi:10.1093/nar/gkz704

    authors: Chen D,Wang Y,Mo M,Zhang J,Zhang Y,Xu Y,Liu SY,Chen J,Ma Y,Zhang L,Dai Z,Cai C,Zou X

    更新日期:2019-11-04 00:00:00

  • PCNA-MutSalpha-mediated binding of MutLalpha to replicative DNA with mismatched bases to induce apoptosis in human cells.

    abstract::Modified bases, such as O6-methylguanines, are produced in cells exposed to alkylating agents and cause apoptosis. In human cells treated with N-methyl-N-nitrosourea, we detected a protein complex composed of MutSalpha, MutLalpha and PCNA on damaged DNA by immunoprecipitation method using chromatin extracts, in which ...

    journal_title:Nucleic acids research

    pub_type: 杂志文章

    doi:10.1093/nar/gki878

    authors: Hidaka M,Takagi Y,Takano TY,Sekiguchi M

    更新日期:2005-10-04 00:00:00

  • Deoxydodecanucleotide heteroduplex d(TTTTATAATAAA). d(TTTATTATAAAA) containing the promoter Pribnow sequence TATAAT. I. Double-helix stability by UV spectrophotometry and calorimetry.

    abstract::Thermally induced structural transition in the d(TTTTATAATAAA) d(TTTATTATAAAA) heteroduplex is characterized by UV-spectroscopy and differential scanning calorimetry. At low salt (less than 0.1 M) the occurrence of a cooperative transition in the lower temperature range, followed by a broad transition connected with s...

    journal_title:Nucleic acids research

    pub_type: 杂志文章

    doi:10.1093/nar/12.7.3245

    authors: Bolewska K,Zielenkiewicz A,Wierzchowski KL

    更新日期:1984-04-11 00:00:00

  • Microchip electrophoresis: a method for high-speed SNP detection.

    abstract::As a trial practical application, we have applied optimized microfabricated electrophoresis devices, combined with enzymatic mutation detection methods, to the determination of single nucleotide polymorphism (SNP) sites in the p53 suppressor gene. Using clinical samples, we have achieved robust assays with quality fac...

    journal_title:Nucleic acids research

    pub_type: 杂志文章

    doi:10.1093/nar/28.9.e43

    authors: Schmalzing D,Belenky A,Novotny MA,Koutny L,Salas-Solano O,El-Difrawy S,Adourian A,Matsudaira P,Ehrlich D

    更新日期:2000-05-01 00:00:00

  • Oligonucleotides form a duplex with non-helical properties on a positively charged surface.

    abstract::The double helix is known to form as a result of hybridization of complementary nucleic acid strands in aqueous solution. In the helix the negatively charged phosphate groups of each nucleic acid strand are distributed helically on the outside of the duplex and are available for interaction with cationic groups. Catio...

    journal_title:Nucleic acids research

    pub_type: 杂志文章

    doi:10.1093/nar/29.14.3051

    authors: Lemeshko SV,Powdrill T,Belosludtsev YY,Hogan M

    更新日期:2001-07-15 00:00:00

  • Predicted structure and phyletic distribution of the RNA-binding protein Hfq.

    abstract::Hfq, a bacterial RNA-binding protein, was recently shown to contain the Sm1 motif, a characteristic of Sm and LSm proteins that function in RNA processing events in archaea and eukaryotes. In this report, comparative structural modeling was used to predict a three-dimensional structure of the Hfq core sequence. The pr...

    journal_title:Nucleic acids research

    pub_type: 杂志文章

    doi:10.1093/nar/gkf508

    authors: Sun X,Zhulin I,Wartell RM

    更新日期:2002-09-01 00:00:00

  • SMART 6: recent updates and new developments.

    abstract::Simple modular architecture research tool (SMART) is an online tool (http://smart.embl.de/) for the identification and annotation of protein domains. It provides a user-friendly platform for the exploration and comparative study of domain architectures in both proteins and genes. The current release of SMART contains ...

    journal_title:Nucleic acids research

    pub_type: 杂志文章

    doi:10.1093/nar/gkn808

    authors: Letunic I,Doerks T,Bork P

    更新日期:2009-01-01 00:00:00

  • Replacement of invariant bZip residues within the basic region of the yeast transcriptional activator GCN4 can change its DNA binding specificity.

    abstract::Two residues are invariant in all bZip basic regions: asparagine -18 and arginine -10 (we define the first leucine of the leucine zipper of GCN4 as +1). X-ray structures of two specific GCN4-DNA complexes (Ellenberger et al., Cell, 71, 1223-1237, 1992; König & Richmond, J. Mol. Biol., 233, 139-154, 1993) demonstrate t...

    journal_title:Nucleic acids research

    pub_type: 杂志文章

    doi:10.1093/nar/22.21.4395

    authors: Suckow M,Schwamborn K,Kisters-Woike B,von Wilcken-Bergmann B,Müller-Hill B

    更新日期:1994-10-25 00:00:00

  • Mediation of the A/B-DNA helix transition by G-tracts in the crystal structure of duplex CATGGGCCCATG.

    abstract::The crystal structure of the DNA dodecamer duplex CATGGGCCCATG lies on a structural continuum along the transition between A- and B-DNA. The dodecamer possesses the normal vector plot and inclination values typical of B-DNA, but has the crystal packing, helical twist, groove width, sugar pucker, slide and x-displaceme...

    journal_title:Nucleic acids research

    pub_type: 杂志文章

    doi:10.1093/nar/gkf515

    authors: Ng HL,Dickerson RE

    更新日期:2002-09-15 00:00:00

  • Database for mobile group II introns.

    abstract::Group II introns are self-splicing RNAs and retroelements found in bacteria and lower eukaryotic organelles. During the past several years, they have been uncovered in surprising numbers in bacteria due to the genome sequencing projects; however, most of the newly sequenced introns are not correctly identified. We hav...

    journal_title:Nucleic acids research

    pub_type: 杂志文章

    doi:10.1093/nar/gkg049

    authors: Dai L,Toor N,Olson R,Keeping A,Zimmerly S

    更新日期:2003-01-01 00:00:00

  • A direct-repeat sequence of the human BiP gene is required for A23187-mediated inducibility and an inducible nuclear factor binding.

    abstract::We have recently isolated a functional promoter encoding the human polypeptide-binding protein (BiP) gene from Burkitt's lymphoma cells by polymerase chain reaction (The EMBL Data Library accession number X59969, 1991). This promoter DNA segment (termed BiP670) was fused to the bacterial chloramphenicol acetyltransfer...

    journal_title:Nucleic acids research

    pub_type: 杂志文章

    doi:10.1093/nar/20.24.6481

    authors: Chao CC,Lin-Chao S

    更新日期:1992-12-25 00:00:00

  • High expression of functional adenovirus DNA polymerase and precursor terminal protein using recombinant vaccinia virus.

    abstract::Initiation of Adenovirus (Ad) DNA replication occurs by a protein-priming mechanism in which the viral precursor terminal protein (pTP) and DNA polymerase (pol) as well as two nuclear DNA-binding proteins from uninfected HeLa cells are required. Biochemical studies on the pTP and DNA polymerase proteins separately hav...

    journal_title:Nucleic acids research

    pub_type: 杂志文章

    doi:10.1093/nar/16.6.2431

    authors: Stunnenberg HG,Lange H,Philipson L,van Miltenburg RT,van der Vliet PC

    更新日期:1988-03-25 00:00:00

  • Sensitive detection of p53 gene mutations by a 'mutant enriched' PCR-SSCP technique.

    abstract::For the rapid and sensitive detection of p53 'hot spot' mutations, we combined polymerase chain reaction based single-strand conformational polymorphism (PCR-SSCP) analysis with sequence specific-clamping by peptide nucleic acids (PNAs) in a one-step reaction tube protocol. For this purpose, we designed two PNA molecu...

    journal_title:Nucleic acids research

    pub_type: 杂志文章

    doi:10.1093/nar/26.5.1356

    authors: Behn M,Schuermann M

    更新日期:1998-03-01 00:00:00