| ID | Fold | PDBID | PDB annotation | Length | RFam ID |
| 4CSF_s | 397 | 4CSF | RNA (5'-R(*UP*GP*UP*GP*UP*UP*UP*CP*UP)-3') | 9 | - |
| 4CSF_u | 397 | 4CSF | RNA (5'-R(*UP*GP*UP*GP*UP*UP*UP*CP*UP)-3') | 9 | - |
| 4CSF_w | 397 | 4CSF | RNA (5'-R(*UP*GP*UP*GP*UP*UP*UP*CP*UP)-3') | 9 | - |
| 4CSU_A | 27 | 4CSU | 5S RRNA | 118 | RF00001 |
| 4CSU_B | 53 | 4CSU | 23S RRNA | 2903 | RF02541 |
| 4CXG_1 | 266 | 4CXG | 18S RRNA - H44 | 135 | RF01960 |
| 4CXG_2 | 268 | 4CXG | 28S RRNA - H89 | 50 | RF02543 |
| 4CXG_a | 328 | 4CXG | 18S RRNA - H5-H14 | 48 | - |
| 4CXG_b | 2 | 4CXG | 18S RRNA - H8 | 17 | - |
| 4CXG_c | 25 | 4CXG | 28S RRNA - H95 | 19 | - |
| 4CXG_x | 398 | 4CXG | MESSENGER RNA | 28 | - |
| 4CXG_Y | 14 | 4CXG | TRANSFER RNA | 76 | RF00005 |
| 4CXH_1 | 266 | 4CXH | 18S RRNA - H44 | 135 | RF01960 |
| 4CXH_2 | 268 | 4CXH | 28S RRNA - H89 | 50 | RF02543 |
| 4CXH_a | 328 | 4CXH | 18S RRNA - H5-H14 | 48 | - |
| 4CXH_b | 2 | 4CXH | 18S RRNA - H8 | 17 | - |
| 4CXH_c | 25 | 4CXH | 28S RRNA - H95 | 19 | - |
| 4CXH_x | 398 | 4CXH | MESSENGER RNA | 28 | - |
| 4CXH_Y | 14 | 4CXH | TRANSFER RNA | 76 | RF00005 |
| 4D25_D | 184 | 4D25 | 5'-R(*UP*GP*AP*CP*AP*UP)-3' | 6 | - |
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