| ID | Fold | PDBID | PDB annotation | Length | RFam ID |
| 3J2C_M | 337 | 3J2C | 16S rRNA head domain | 462 | RF00177 |
| 3J2C_N | 56 | 3J2C | 16S rRNA body domain | 927 | RF00177 |
| 3J2C_O | 266 | 3J2C | 16S rRNA body domain | 144 | RF00177 |
| 3J2D_N | 56 | 3J2D | 16S rRNA | 1533 | RF00177 |
| 3J2E_N | 56 | 3J2E | 16S rRNA | 1533 | RF00177 |
| 3J2F_N | 56 | 3J2F | 16S rRNA | 1533 | RF00177 |
| 3J2G_N | 56 | 3J2G | 16S rRNA | 1533 | RF00177 |
| 3J2H_N | 56 | 3J2H | 16S rRNA | 1533 | RF00177 |
| 3J3V_A | 53 | 3J3V | ribosome RNA 23S | 2927 | RF02541 |
| 3J3V_B | 27 | 3J3V | ribosome RNA 5S | 119 | RF00001 |
| 3J3W_A | 53 | 3J3W | ribosome RNA 23S | 2927 | RF02541 |
| 3J45_1 | 288 | 3J45 | 23S ribosomal RNA | 63 | - |
| 3J45_2 | 290 | 3J45 | 23S ribosomal RNA | 36 | - |
| 3J45_3 | 2 | 3J45 | 23S ribosomal RNA | 18 | - |
| 3J45_4 | 267 | 3J45 | 23S ribosomal RNA | 61 | - |
| 3J45_5 | 108 | 3J45 | 23S ribosomal RNA | 108 | RF02541 |
| 3J46_1 | 288 | 3J46 | 23S ribosomal RNA | 63 | - |
| 3J46_2 | 290 | 3J46 | 23S ribosomal RNA | 36 | - |
| 3J46_3 | 302 | 3J46 | 23S ribosomal RNA | 44 | - |
| 3J46_4 | 108 | 3J46 | 23S ribosomal RNA | 109 | RF02541 |
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