| 1 | 1U6B|1|B (rep) | | 197-MER, 5'-R(*AP*AP*GP*CP*CP*AP*CP*AP*CP*AP*AP*AP*CP*CP*AP*GP*AP*CP*GP *GP*CP*C)-3', 5'-R(*CP*AP*(5MU))-3' | | | | CRYSTAL STRUCTURE OF A SELF-SPLICING GROUP I INTRON WITH BOTH EXONS | X-ray diffraction | 3.1 | 2004-08-10 |
| 2 | 3BO2|1|B | | Group I intron P9, RNA (5'-R(*AP*AP*GP*CP*CP*AP*CP*AP*CP*AP*AP*AP*CP*CP*AP*G)-3'), RNA (5'-R(*AP*CP*GP*GP*CP*C)-3'), RNA (5'-R(*CP*AP*U)-3') | synthetic construct | | | A relaxed active site following exon ligation by a group I intron | X-ray diffraction | 3.31 | 2008-04-01 |
| 3 | 3BO3|1|B | | Group I intron P9, RNA (5'-R(*AP*AP*GP*CP*CP*AP*CP*AP*CP*AP*AP*AP*CP*CP*AP*G)-3'), RNA (5'-R(*CP*AP*UP*AP*CP*GP*GP*CP*C)-3') | synthetic construct | | | A relaxed active site following exon ligation by a group I intron | X-ray diffraction | 3.4 | 2008-04-01 |
| 4 | 1ZZN|1|B | | 197-MER, 5'-R(*AP*AP*GP*CP*CP*AP*CP*AP*CP*AP*AP*AP*CP*CP*AP*GP*AP*CP*GP*GP*CP*C)-3', 5'-R(*CP*AP*(5MU))-3' | | | | Crystal structure of a group I intron/two exon complex that includes all catalytic metal ion ligands. | X-ray diffraction | 3.37 | 2005-08-30 |
| 5 | 3BO4|1|B | | Group I intron P9 | synthetic construct | | | A relaxed active site following exon ligation by a group I intron | X-ray diffraction | 3.33 | 2008-04-01 |
| 6 | 3IIN|1|B | | Group I intron | | | | Plasticity of the kink turn structural motif | X-ray diffraction | 4.18 | 2010-03-09 |