Influence of nucleotide sequence on dA.dT-specific binding of Netropsin to double stranded DNA.

نویسندگان

  • C Zimmer
  • C Marck
  • C Schneider
  • W Guschlbauer
چکیده

Using CD measurements the complex formation of Netropsin (Nt) with poly(dA-dC).poly(dT-dG) and its stability against high salt concentrations is compared with that of poly(dA).poly(dT) and poly(dA-dT).POLY(DT-dA). It is experimentally shown that the insertion of a dG.dC pair in dA.dT sequences strongly reduces the specific interaction of Nt with DNA duplexes. The specificity of the interaction is strongly increased by two or more consecutive thymine residues as present in thymine isostichs of double stranded DNA's.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Sequence-specific cleavage of double-stranded DNA caused by X-ray ionization of the platinum atom in the Pt-bis-netropsin--DNA complex.

An analog of the antibiotic netropsin containing two netropsin-like fragments linked covalently via a platinum atom has been synthesized. DNase I and hydroxyl radical footprinting studies have shown that this compound binds at selective sites on a DNA restriction fragment with a known nucleotide sequence. After X-ray irradiation of Pt-bis-netropsin--DNA complexes a platinum-mediated cleavage of...

متن کامل

Accurate Estimation of the Standard Binding Free Energy of Netropsin with DNA.

DNA is the target of chemical compounds (drugs, pollutants, photosensitizers, etc.), which bind through non-covalent interactions. Depending on their structure and their chemical properties, DNA binders can associate to the minor or to the major groove of double-stranded DNA. They can also intercalate between two adjacent base pairs, or even replace one or two base pairs within the DNA double h...

متن کامل

Interaction between antitumor drugs and a double-stranded oligonucleotide studied by electrospray ionization mass spectrometry.

Electrospray ionization mass spectrometry was used to investigate the complex formation between a double-stranded oligonucleotide and various antitumor drugs belonging to two categories: intercalators (ethidium bromide, amsacrine and ascididemin) and minor groove binders (Hoechst 33258, netropsin, distamycin A, berenil and DAPI). The goal of this study was to determine whether the relative inte...

متن کامل

Footprinting with MPE.Fe(II). Complementary-strand analyses of distamycin- and actinomycin-binding sites on heterogeneous DNA.

We recently reported a direct technique for determining the binding sites of small molecules on naturally occurring heterogeneous DNA (Van Dyke et al. 1982). Methidiumpropyl-EDTA.Fe(lI) (MPE.Fe[I~) (Hertzberg and Dervan 1982) cleaves double-helical DNA with low sequence-specificity (Van Dyke et al. 1982). Using a combination of MPE-Fe(II) partial cleavage of drugprotected DNA fragments and Maxa...

متن کامل

The binding modes of a rationally designed photoactivated DNA nuclease determined by NMR.

The complex between the rationally designed synthetic DNA cleaving agent netropsin-diazene and the double-stranded DNA oligomer 5'-CGCAAAGGC-3'.5'-GCCTTTTGCG-3' was characterized by two-dimensional NMR spectroscopy in solution. Photolysis of netropsin-diazene bound to DNA generates a trimethylenemethane diradical intermediate that induces single-strand breaks in the DNA. The pi-diyl trimethylen...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:
  • Nucleic acids research

دوره 6 8  شماره 

صفحات  -

تاریخ انتشار 1979