Solution structure of an informationally complex high-affinity RNA aptamer to GTP.
Carothers, J.M., Davis, J.H., Chou, J.J., Szostak, J.W.(2006) RNA 12: 567-579
- PubMed: 16510427 
- DOI: 10.1261/rna.2251306
- Primary Citation of Related Structures:  
2AU4 - PubMed Abstract: 
Higher-affinity RNA aptamers to GTP are more informationally complex than lower-affinity aptamers. Analog binding studies have shown that the additional information needed to improve affinity does not specify more interactions with the ligand. In light of those observations, we would like to understand the structural characteristics that enable complex aptamers to bind their ligands with higher affinity ...