About: Conductivity of natural and modified DNA measured by scanning tunneling microscopy. The effect of sequence, charge and stacking

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About: Conductivity of natural and modified DNA measured by scanning tunneling microscopy. The effect of sequence, charge and stacking Goto Sponge NotDistinct Permalink

An Entity of Type : http://linked.opendata.cz/ontology/domain/vavai/Vysledek, within Data Space : linked.opendata.cz associated with source document(s)

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Byla zkoumána vodivost speciálně upravených sekvencí molekuly DNA. Z výsledků měření byl stanoven především vliv nespárovaných bazí a abasicity na transport náboje molekulou. Byla popsána role cukrové páteře molekuly a negativních nábojů fosfátových skupin v celkovém transportním chování molekulárního systému. (cs) The conductivity of DNA covalently bonded to a gold surface was studied by means of the STM technique. The investigations focused on the role of several features of DNA structure, namely the role of the negative charge at the backbone phosphate group and the related complex effects of counterions, and of the stacking interactions between the bases in Watson-Crick and other types of base pairs. The measurements have indicated that the best conductor is DNA in its biologically most relevant double-stranded form with Watson-Crick base pairs and charged phosphates equilibrated with counterions and water. All the studied modifications, including DNA with non-Watson-Crick base pairs, the abasic form, and especially the form with phosphate charges eliminated by chemical modifications, lower the conductivity of natural DNA. The conductivity of DNA covalently bonded to a gold surface was studied by means of the STM technique. The investigations focused on the role of several features of DNA structure, namely the role of the negative charge at the backbone phosphate group and the related complex effects of counterions, and of the stacking interactions between the bases in Watson-Crick and other types of base pairs. The measurements have indicated that the best conductor is DNA in its biologically most relevant double-stranded form with Watson-Crick base pairs and charged phosphates equilibrated with counterions and water. All the studied modifications, including DNA with non-Watson-Crick base pairs, the abasic form, and especially the form with phosphate charges eliminated by chemical modifications, lower the conductivity of natural DNA. (en)
Title	Conductivity of natural and modified DNA measured by scanning tunneling microscopy. The effect of sequence, charge and stacking Vodivost syntetické základní a modifikované DNA měřená skenovacím tunelovacím mikroskopem. Vliv sekvencí, náboje a stekování (cs) Conductivity of natural and modified DNA measured by scanning tunneling microscopy. The effect of sequence, charge and stacking (en)
skos:prefLabel	Conductivity of natural and modified DNA measured by scanning tunneling microscopy. The effect of sequence, charge and stacking Vodivost syntetické základní a modifikované DNA měřená skenovacím tunelovacím mikroskopem. Vliv sekvencí, náboje a stekování (cs) Conductivity of natural and modified DNA measured by scanning tunneling microscopy. The effect of sequence, charge and stacking (en)
skos:notation	RIV/86652036:_____/08:00313026!RIV09-AV0-86652036
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(GA202/07/0643), P(GA203/08/1594), P(KAN200100801), P(KAN401770651), P(OC 137), Z(AV0Z10100520), Z(AV0Z40500505), Z(AV0Z50520701)
http://linked.open...iv/cisloPeriodika	1-2
http://linked.open...vai/riv/dodaniDat	2009
http://linked.open...aciTvurceVysledku	Schneider, Bohdan
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Biotechnologický ústav AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	360993
http://linked.open...ai/riv/idVysledku	RIV/86652036:_____/08:00313026
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	DNA conductivity; charge transport in molecular systems; STM; electronic properties (en)
http://linked.open.../riv/klicoveSlovo	electronic properties STM DNA conductivity charge transport in molecular systems
http://linked.open...odStatuVydavatele	NL - Nizozemsko
http://linked.open...ontrolniKodProRIV	[CFE982D7C8DC]
http://linked.open...i/riv/nazevZdroje	Biophysical Chemistry
http://linked.open...in/vavai/riv/obor	BM
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	9 (xsd:int)
http://linked.open...vavai/riv/projekt	Sensoric properties of aromatic and heterocyclic compounds with conjugated bonds Bioactive Biocompatible Surfaces and Novel Nanostructured Composites for Applications to Medicine and Drug Delivery Molecular nanosystems and nanodevices: electric transport properties http://linked.opendata.cz/resource/domain/vavai/projekt/OC%20137 Electronic transport in organic-inorganic nanodevices
http://linked.open...UplatneniVysledku	2008
http://linked.open...v/svazekPeriodika	138
http://linked.open...iv/tvurceVysledku	Kochalska, Anna Kratochvílová, Irena Nešpůrek, Stanislav Schneider, Bohdan Král, Karel Bunček, M. Weiter, M. Todorciuc, Tatiana Víšková, A.
http://linked.open...ain/vavai/riv/wos	000260662900002
http://linked.open...n/vavai/riv/zamer	Specific effects in condensed systems with reduced dimension and broken symmetry Progresivní makromolekulární materiály a supramolekulární systémy: syntéza a studium vlastností, jevů a možností využití pro speciální aplikace a moderní technologie Establishing of the Biotechnology Institute ASCR
issn	0301-4622
number of pages	8 (xsd:int)

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