Literature DB >> 9394471

Four-stranded DNA formed by isoguanine quartets: complex stoichiometry, thermal stability and resistance against exonucleases.

F Seela1, C Wei, A Melenewski.   

Abstract

Single stranded DNA-fragments containing short runs of isoguanine such as d(T4iG4T4) (5) or d(iG4T4) (6) form quartet structures by self-assembly of the isoguanine residues. The stoichiometry of the complexes is deduced from mixed aggregates formed between d(T4iG4T4) and d(iG4T4). The iGd-tetrads are more stable with regard to their thermal denaturation and to their resistance against enzymatic phosphodiester hydrolysis than those formed by dG.

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Year:  1997        PMID： 9394471     DOI： 10.1023/a:1006531728815

Source DB:  PubMed          Journal:  Orig Life Evol Biosph        ISSN： 0169-6149            Impact factor:   1.950


  16 in total

1.  Isoguanine quartets formed by d(T4isoG4T4): tetraplex identification and stability.

Authors:  F Seela; C Wei; A Melenewski
Journal:  Nucleic Acids Res       Date:  1996-12-15       Impact factor: 16.971

2.  Monovalent cation-induced structure of telomeric DNA: the G-quartet model.

Authors:  J R Williamson; M K Raghuraman; T R Cech
Journal:  Cell       Date:  1989-12-01       Impact factor: 41.582

3.  A sodium-potassium switch in the formation of four-stranded G4-DNA.

Authors:  D Sen; W Gilbert
Journal:  Nature       Date:  1990-03-29       Impact factor: 49.962

4.  Effect of thymine tract length on the structure and stability of model telomeric sequences.

Authors:  Q Guo; M Lu; N R Kallenbach
Journal:  Biochemistry       Date:  1993-04-13       Impact factor: 3.162

5.  Importance of exocyclic base functional groups of central core guanosines for hammerhead ribozyme activity.

Authors:  T Tuschl; M M Ng; W Pieken; F Benseler; F Eckstein
Journal:  Biochemistry       Date:  1993-11-02       Impact factor: 3.162

6.  Isoguanosine: isolation from an animal.

Authors:  F A Fuhrman; G J Fuhrman; R J Nachman; H S Mosher
Journal:  Science       Date:  1981-05-01       Impact factor: 47.728

7.  Studies on prebiotic synthesis. I. Aminomalononitrile and 4-amino-5-cyanoimidazole.

Authors:  J P Ferris; L E Orgel
Journal:  J Am Chem Soc       Date:  1966-08-20       Impact factor: 15.419

8.  Conditions for purine synthesis: did prebiotic synthesis occur at low temperatures?

Authors:  R Sanchez; J Ferris; L E Orgel
Journal:  Science       Date:  1966-07-01       Impact factor: 47.728

9.  Preparation and properties of an analogue of poly(A) and poly(G): poly(isoguanylic acid).

Authors:  T Golas; M Fikus; Z Kazimierczuk; D Shugar
Journal:  Eur J Biochem       Date:  1976-05-17

10.  Enzymatic recognition of the base pair between isocytidine and isoguanosine.

Authors:  C Y Switzer; S E Moroney; S A Benner
Journal:  Biochemistry       Date:  1993-10-05       Impact factor: 3.162
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  1 in total

1.  Heme activation by DNA: isoguanine pentaplexes, but not quadruplexes, bind heme and enhance its oxidative activity.

Authors:  Nisreen Shumayrikh; Yu Chuan Huang; Dipankar Sen
Journal:  Nucleic Acids Res       Date:  2015-03-30       Impact factor: 16.971
  1 in total

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