Puzzle 20
Sequence (5' to 3'):
ACCCGCAAGGCCGACGGC-GCCGCCGCUGGUGCAAGUCCAGCCACGCUUC
GGCGUGGGCGCUCAUGGGU
Puzzle: Another Twister Sister ribozyme
Crystal structure kindly provided by: Amy Ren
Reference: Zheng, L., Mairhofer, E., Teplova, M., Zhang, Y., Ma, J., Patel, D.J., Micura, R., Ren, A. Structure-based insights into self-cleavage by a four-way junctional twister-sister ribozyme. (2017) Nat Commun 8: 1180-1180