2Z75:
reference: Requirement of helix P2.2 and nucleotide G1 for positioning the cleavage site and cofactor of the glmS ribozyme., Klein DJ, Wilkinson SR, Been MD, Ferre-D'Amare AR, J Mol Biol. 2007 Oct 12;373(1):178-89. Epub 2007 Aug 10. PMID: 17804015

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