| ID | Fold | PDBID | PDB annotation | Length | RFam ID |
| 3DIL_A | 309 | 3DIL | RNA (174-MER) | 174 | RF00168 |
| 3DIM_A | 309 | 3DIM | RNA (174-MER) | 174 | RF00168 |
| 3DIO_X | 309 | 3DIO | RNA (174-MER) | 174 | RF00168 |
| 3DIQ_A | 309 | 3DIQ | RNA (174-MER) | 174 | RF00168 |
| 3DIR_A | 309 | 3DIR | RNA (174-MER) | 174 | RF00168 |
| 3DIS_A | 309 | 3DIS | RNA (174-MER) | 174 | RF00168 |
| 3DIX_A | 309 | 3DIX | RNA (174-MER) | 174 | RF00168 |
| 3DIY_A | 309 | 3DIY | RNA (174-MER) | 174 | RF00168 |
| 3DIZ_A | 309 | 3DIZ | RNA (174-MER) | 174 | RF00168 |
| 3DJ0_A | 309 | 3DJ0 | RNA (174-MER) | 174 | RF00168 |
| 3DJ2_A | 309 | 3DJ2 | RNA (174-MER) | 174 | RF00168 |
| 3DKN_D | 34 | 3DKN | RNA (5'-R(P*CP*GP*UP*GP*CP*CP*AP*AP*GP*CP*UP*GP*CP*GP*AP*UP*AP*AP*GP*C)-3') | 20 | - |
| 3DKN_E | 1 | 3DKN | RNA (5'-R(P*AP*GP*CP*CP*GP*CP*AP*CP*GP*GP*AP*GP*GP*CP*GP*AP*A)-3') | 17 | - |
| 3DKN_F | 290 | 3DKN | RNA (32-MER) | 32 | - |
| 3DLL_X | 53 | 3DLL | rRNA-23S ribosomal RNA | 2880 | RF02541 |
| 3DLL_Z | 27 | 3DLL | rRNA-5S ribosomal RNA | 123 | RF00001 |
| 3DS7_A | 155 | 3DS7 | 67-MER | 67 | RF00167 |
| 3DS7_B | 155 | 3DS7 | 67-MER | 67 | RF00167 |
| 3DVV_A | 1 | 3DVV | HIV-1 genomic RNA | 23 | - |
| 3DVV_B | 1 | 3DVV | HIV-1 genomic RNA | 23 | - |
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