Structure and Dynamics of RNA K-turn Motifs

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F03%3A00009894" target="_blank" >RIV/00216224:14310/03:00009894 - isvavai.cz</a>

Result on the web

—

DOI - Digital Object Identifier

—

Result language

angličtina

Original language name

Structure and Dynamics of RNA K-turn Motifs

Original language description

Hinge-like RNA motifs occur at conserved positions in the 16S and 23S ribosomal RNAs, as revealed by x-ray crystallography of the 50S subunits of H. marismortui and D. radiodurans and the 30S subunit of T. thermophilus. The conformation of these asymmetric internal loops, called Kink-turns or K-turns, produces sharp, 120-degree bends in both phosphodiester backbones resulting in a V-shaped structure with an acute angle of ca.60 deg. between the RNA helices flanking the motif. In addition, some K-turns are specific binding sites for ribosomal proteins and others take part in RNA-RNA tertiary interactions. We have carried out a set of explicit-solvent Molecular Dynamics (MD) simulations for selected K-turn RNA motifs, including K-turn 38,K-turn 42 and K-turn 58 from the 23S ribosomal RNA of Haloarcula marismortui. The simulations reveal an unprecedented dynamical flexibility, suggesting that K-turn motifs may function as a very flexible internal loops linking rigid helix stems and thus c

Czech name

Struktura a dynamika RNA KInk-turn motivov

Czech description

Hinge-like RNA motifs occur at conserved positions in the 16S and 23S ribosomal RNAs, as revealed by x-ray crystallography of the 50S subunits of H. marismortui and D. radiodurans and the 30S subunit of T. thermophilus. The conformation of these asymmetric internal loops, called Kink-turns or K-turns, produces sharp, 120-degree bends in both phosphodiester backbones resulting in a V-shaped structure with an acute angle of ca.60 deg. between the RNA helices flanking the motif. In addition, some K-turns are specific binding sites for ribosomal proteins and others take part in RNA-RNA tertiary interactions. We have carried out a set of explicit-solvent Molecular Dynamics (MD) simulations for selected K-turn RNA motifs, including K-turn 38,K-turn 42 and K-turn 58 from the 23S ribosomal RNA of Haloarcula marismortui. The simulations reveal an unprecedented dynamical flexibility, suggesting that K-turn motifs may function as a very flexible internal loops linking rigid helix stems and thus c

Type

D - Article in proceedings

CEP classification

CF - Physical chemistry and theoretical chemistry

OECD FORD branch

—

Project

<a href="/en/project/LN00A016" target="_blank" >LN00A016: BIOMOLECULAR CENTER</a><br>

Continuities

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

Publication year

2003

Confidentiality

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

Article name in the collection

RNA klub

ISBN

—

ISSN

—

e-ISSN

—

Number of pages

1

Pages from-to

21-21

Publisher name

Praha

Place of publication

Praha

Event location

Praha

Event date

Sep 25, 2003

Type of event by nationality

CST - Celostátní akce

UT code for WoS article

—