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2016
DOI: 10.1002/cbic.201500566
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A Bis(guanidinium)alcohol Attached to a Hairpin Polyamide: Synthesis, DNA Binding, and Plasmid Cleavage

Abstract: Bis(guanidinium)alcohols have been designed to react with phosphodiester substrates in a fast transphosphorylation step, a quasi-intramolecular process taking place in contact ion pairs. Here the attachment of such compounds to Dervan-type hairpin polyamides is described. The resulting conjugate 1 binds to AT-rich DNA duplexes with affinity similar to that of the parent polyamide as shown by UV melting experiments and CD titrations. Conjugate 1 nicks plasmid DNA at concentrations ranging from micromolar to hig… Show more

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Cited by 10 publications
(17 citation statements)
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References 58 publications
(24 reference statements)
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“…In order to design a novel DNA cleaving agent, a bis(guanidinium)alcohol tethered with Dervan hairpin polyamide was synthesized. The resulting conjugate 25 binds A·T-rich DNA duplexes with comparable affinity to that of the parent polyamide and breaks one strand of double-stranded plasmid DNA by interacting with anionic phosphodiesters in a fast transphosphorylation step as contact ion pairs at micromolar to high nanomolar concentration range [ 91 ]. Richert et al designed a novel set of three-pronged probes (TPPs) comprising of cap, β-alanines and oligopyrrolamides in order to bind A·T-rich target strands from three sides (Watson–Crick face, terminus, and minor groove) resulting in exceptionally stable duplexes (Δ T m = +44.8 °C) and high selectivity [ 92 ].…”
Section: Reviewmentioning
confidence: 99%
“…In order to design a novel DNA cleaving agent, a bis(guanidinium)alcohol tethered with Dervan hairpin polyamide was synthesized. The resulting conjugate 25 binds A·T-rich DNA duplexes with comparable affinity to that of the parent polyamide and breaks one strand of double-stranded plasmid DNA by interacting with anionic phosphodiesters in a fast transphosphorylation step as contact ion pairs at micromolar to high nanomolar concentration range [ 91 ]. Richert et al designed a novel set of three-pronged probes (TPPs) comprising of cap, β-alanines and oligopyrrolamides in order to bind A·T-rich target strands from three sides (Watson–Crick face, terminus, and minor groove) resulting in exceptionally stable duplexes (Δ T m = +44.8 °C) and high selectivity [ 92 ].…”
Section: Reviewmentioning
confidence: 99%
“…Zum Aufbau dieser Einheiten kann neben einer Peptidkupplung auch eine Haloform-artige-Reaktion eingesetzt werden. [152][153][154] Auch in diesem Fall kann der fragmentbasierte Ansatz die Zahl der Reaktionsschritte verringern und die Gesamtausbeute der Synthese erhöhen. Außerdem erhöht der modulare Aufbau die Flexibilität der Synthese unterschiedlicher PIPs.…”
Section: Synthese Der Pipsunclassified
“…In vorausgegangenen Arbeiten konnte in unserer Gruppe bereits ein entsprechendes Konjugat K1 aus der gegen Sp1 gerichteten DNA 2 und dem PIP PA1 synthetisiert werden (Abbildung 24). [11,12] Erwartungen, was später als Motivation zur Synthese von Achtmer-PIPs diente, die sich erfahrungsgemäß durch eine stark erhöhte Affinität auszeichnen. [14] Ausgehend von diesen Ergebnissen galt es im nächsten Schritt die Umleitung des TFs Sp1 waren, [7] mussten diese mit den PIP-Adaptoren verglichen werden, um das effektivere pseudokomplementärer PNAs in Betracht gezogen.…”
Section: Außerdem Erlaubt Die Erhöhte Nukleasestabilität Dieser Verbindungen Den Einsatz Vonunclassified
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