AGAA and AGUU RNA Hairpins
Recognized by yeast RNase III

H. Wu, Pok K. Yang, S.E. Butcher, S. Kang, G. Chanfreau,  and J. Feigon: "A novel family of RNA tetraloop structure forms the recognition site for S. cerevisiae RNase III", EMBO J. 20, 7240-7249 (2001). [abstract]

PDB Codes: 1K4A; 1K4B

Superpositions of all heavy atoms of the 20 lowest energy solution structures of (Left) AGAA and (Right) AGUU RNA hairpins.