Ribozomalny Kink-turn motiv - flexibilny molekularny klb

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F04%3A00021349" target="_blank" >RIV/00216224:14310/04:00021349 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Ribosomal RNA Kink-turn motif - a flexible molecular hinge

Popis výsledku v původním jazyce

Ribosomal RNA K-turn motifs are asymmetric internal loops characterized by a sharp bend in the phosphodiester backbone resulting in &quot;V&quot; shaped structures, recurrently observed in ribosomes and showing high degree of sequence conservation. We have carried out extended explicit solvent molecular dynamics simulations of selected K-turns, in order to investigate their intrinsic structural and dynamical properties. The simulations reveal an unprecedented dynamical flexibility of the K-turns aroundtheir x-ray geometries. The K-turns sample, on the nanosecond timescale, different conformational substates. The overall behaviour of the simulations suggests that the sampled geometries are essentially isoenergetic and separated by minimal energy barriers. The nanosecond dynamics of isolated K-turns can be qualitatively considered as motion of two rigid helix stems controlled by a very flexible internal loop which then leads to substantial hinge-like motions between the two stems. This

Název v anglickém jazyce

Ribosomal RNA Kink-turn motif - a flexible molecular hinge

Popis výsledku anglicky

Ribosomal RNA K-turn motifs are asymmetric internal loops characterized by a sharp bend in the phosphodiester backbone resulting in &quot;V&quot; shaped structures, recurrently observed in ribosomes and showing high degree of sequence conservation. We have carried out extended explicit solvent molecular dynamics simulations of selected K-turns, in order to investigate their intrinsic structural and dynamical properties. The simulations reveal an unprecedented dynamical flexibility of the K-turns aroundtheir x-ray geometries. The K-turns sample, on the nanosecond timescale, different conformational substates. The overall behaviour of the simulations suggests that the sampled geometries are essentially isoenergetic and separated by minimal energy barriers. The nanosecond dynamics of isolated K-turns can be qualitatively considered as motion of two rigid helix stems controlled by a very flexible internal loop which then leads to substantial hinge-like motions between the two stems. This

Druh

D - Stať ve sborníku

CEP obor

CF - Fyzikální chemie a teoretická chemie

OECD FORD obor

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Projekt

<a href="/cs/project/LN00A016" target="_blank" >LN00A016: BIOMOLEKULÁRNÍ CENTRUM</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2004

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Conference on Current Trends in Computational Chemistry

ISBN

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ISSN

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e-ISSN

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Počet stran výsledku

1

Strana od-do

87-87

Název nakladatele

Jackson, Miss, USA

Místo vydání

Jackson, MS, USA

Místo konání akce

Jackson, MS, USA

Datum konání akce

1. 1. 2004

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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