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. Author manuscript; available in PMC: 2010 Mar 11.
Published in final edited form as: J Am Chem Soc. 2009 Mar 11;131(9):3136–3137. doi: 10.1021/ja808217s

Figure 1.

Figure 1

SDSL probing of P1 helix docking. (A) Schematic renditions of the open and closed ribozyme complex. The substrate sequences, the R5a spin label (*), the cleavage site (∇), and the J1/2 junction are marked. (B) EPR spectra of various substrate/ribozyme complexes.