| ID | Fold | PDBID | PDB annotation | Length | RFam ID |
| 6CFL_1B | 27 | 6CFL | 5S Ribosomal RNA | 121 | RF00001 |
| 6CFL_1a | 56 | 6CFL | 16S Ribosomal RNA | 1521 | RF00177 |
| 6CFL_2A | 53 | 6CFL | 23S Ribosomal RNA | 2915 | RF02541 |
| 6CFL_2B | 27 | 6CFL | 5S Ribosomal RNA | 121 | RF00001 |
| 6CFL_2a | 56 | 6CFL | 16S Ribosomal RNA | 1521 | RF00177 |
| 6CHR_A | 434 | 6CHR | RNA (621-MER) | 625 | RF00029,RF02012 |
| 6CHR_B | 435 | 6CHR | RNA (5'-R(P*UP*GP*UP*UP*UP*AP*UP*UP*AP*AP*AP*AP*A)-3') | 13 | - |
| 6CIH_A | 434 | 6CIH | RNA (696-MER) | 621 | RF00029,RF02012 |
| 6CIH_B | 435 | 6CIH | RNA (5'-R(P*UP*GP*UP*UP*UP*AP*UP*UP*AP*AP*AP*AP*AP*C*-3') | 14 | - |
| 6CK4_A | 506 | 6CK4 | PRPP riboswitch | 117 | - |
| 6CK4_B | 506 | 6CK4 | PRPP riboswitch | 117 | - |
| 6CK4_C | 506 | 6CK4 | PRPP riboswitch | 117 | - |
| 6CK4_D | 506 | 6CK4 | PRPP riboswitch | 117 | - |
| 6CK5_A | 506 | 6CK5 | PRPP riboswitch | 117 | - |
| 6CK5_B | 506 | 6CK5 | PRPP riboswitch | 117 | - |
| 6CMN_D | 10 | 6CMN | Trans-Activation Response RNA Element | 27 | - |
| 6CU1_A | 541 | 6CU1 | YrlA effector-binding module | 81 | RF02553 |
| 6CXZ_A | 1 | 6CXZ | RNA (5'-R(*CP*GP*AP*AP*(U4M)P*UP*CP*G)-3') | 8 | - |
| 6CXZ_B | 1 | 6CXZ | RNA (5'-R(*CP*GP*AP*AP*(U4M)P*UP*CP*G)-3') | 8 | - |
| 6CY0_A | 586 | 6CY0 | RNA (5'-R(*(CBV)P*GP*AP*AP*(UFB)P*UP*CP*G)-3') | 8 | - |
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