RNA 3D Motif Atlas
is a comprehensive and representative collection of internal and hairpin loop RNA 3D motifs extracted from the Non-redundant lists of RNA 3D structures. Automatically updated every 4 weeks.
Internal loops Graph view Current version: 1.2 Hairpin loops Graph view Current version: 1.2Last update: 04-05-2013; next update: 01-06-2013
RNA 3D motifs are recurrent structural modules that are essential for many biological functions and RNA folding. Usually drawn as unstructured hairpin and internal loops, these motifs are organized by non-canonical basepairs, supplemented by characteristic stacking and base-backbone interactions.
Method. To create the Motif Atlas we extract RNA 3D motif instances from the current non-redundant list using FR3D, a program for symbolic and geometric searching of RNA 3D structures. Next, we use a clustering approach based on maximum cliques to obtain a representative collection of RNA 3D motifs. Unique and stable ids are assigned to all motifs and motif instances.
Kink-turn 
C-loop 
Sarcin 
Triple sheared 
Double sheared 
T-loop 
GNRA