Bioorganic and Medicinal Chemistry Letters p. 157 - 160 (1999)
Update date:2022-08-05
Topics:
Matulic-Adamic, Jasenka
Daniher, Andrew T.
Gonzalez, Carolyn
Beigelman, Leonid
Previously developed '5-ribo' nuclease stabilized hammerhead motif was further refined by systematic incorporation of 1-(β-D-xylofuranosyl) adenine (xA) and 1-(β-D-xylofuranosyl) guanine (xG) in the place of conserved ribopurine residues of the catalytic core. Modified ribozymes substituted with xA at positions A15.1 and A6 demonstrated catalytic activity close to the parent stabilized ribozyme. Analogous guanosine substitutions at positions G5, G8 and G12 substantially lowered catalytic rates.
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