2L8U: Nmr Spectroscopy And Molecular Dynamics Simulation Of R(Ccgcugcgg)2 Reveal A Dynamic Uu Internal Loop Found In Myotonic Dystrophy Type 1 - Uu Pair With One Hydrogen Bond Pair

The NMR structure of an RNA with a copy of the 5'CUG/3'GUC motif found in the triplet repeating disorder myotonic dystrophy type 1 (DM1) is disclosed. The lowest energy conformation of the UU pair is a single-hydrogen bond structure; however, the UU protons undergo exchange indicating structural dynamics. Molecular dynamics simulations show that the single hydrogen bond structure is the most populated one but the UU pair interconverts among zero, one, and two hydrogen bond pairs. These studies have implications for the recognition of the DM1 RNA by small molecules and proteins.
PDB ID: 2L8UDownload
MMDB ID: 88754
PDB Deposition Date: 2011/1/25
Updated in MMDB: 2011/05
Experimental Method:
solution nmr
Source Organism:
Biological Unit for 2L8U: dimeric; determined by author
Molecular Components in 2L8U
Label Count Molecule
Nucleotide(1 molecule)
RNA (5'-r(*cp*cp*gp*cp*up*gp*cp*gp*g)-3')
Molecule annotation
* Click molecule labels to explore molecular sequence information.

Citing MMDB