| ID | Fold | PDBID | PDB annotation | Length | RFam ID |
| 4U4Q_7 | 27 | 4U4Q | 5S ribosomal RNA | 121 | RF00001 |
| 4U4Q_8 | 544 | 4U4Q | 5.8S ribosomal RNA | 158 | RF00002 |
| 4U4R_2 | 56 | 4U4R | 18S ribosomal RNA | 1800 | RF01960 |
| 4U4R_1 | 53 | 4U4R | 25S ribosomal RNA | 3396 | RF02543 |
| 4U4R_3 | 27 | 4U4R | 5S ribosomal RNA | 121 | RF00001 |
| 4U4R_4 | 544 | 4U4R | 5.8S ribosomal RNA | 158 | RF00002 |
| 4U4R_6 | 56 | 4U4R | 18S ribosomal RNA | 1800 | RF01960 |
| 4U4R_5 | 53 | 4U4R | 25S ribosomal RNA | 3396 | RF02543 |
| 4U4R_7 | 27 | 4U4R | 5S ribosomal RNA | 121 | RF00001 |
| 4U4R_8 | 544 | 4U4R | 5.8S ribosomal RNA | 158 | RF00002 |
| 4U4U_2 | 56 | 4U4U | 18S ribosomal RNA | 1800 | RF01960 |
| 4U4U_1 | 53 | 4U4U | 25S ribosomal RNA | 3396 | RF02543 |
| 4U4U_3 | 27 | 4U4U | 5S ribosomal RNA | 121 | RF00001 |
| 4U4U_4 | 544 | 4U4U | 5.8S ribosomal RNA | 158 | RF00002 |
| 4U4U_6 | 56 | 4U4U | 18S ribosomal RNA | 1800 | RF01960 |
| 4U4U_5 | 53 | 4U4U | 25S ribosomal RNA | 3396 | RF02543 |
| 4U4U_7 | 27 | 4U4U | 5S ribosomal RNA | 121 | RF00001 |
| 4U4U_8 | 544 | 4U4U | 5.8S ribosomal RNA | 158 | RF00002 |
| 4U4Y_2 | 56 | 4U4Y | 18S ribosomal RNA | 1800 | RF01960 |
| 4U4Y_1 | 53 | 4U4Y | 25S ribosomal RNA | 3396 | RF02543 |
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