PreQ1 riboswitch
| PreQ1 riboswitch | |
|---|---|
Predicted secondary structure and sequence conservation of PreQ1 | |
| Identifiers | |
| Symbol | PreQ1 |
| Rfam | RF00522 |
| Other data | |
| RNA type | Cis-reg; riboswitch |
| Domain(s) | Bacteria |
| SO | SO:0000035 |
| PDB structures | PDBe 2L1V |
The PreQ1-I riboswitch is a cis-acting element identified in bacteria which regulates expression of genes involved in biosynthesis of the nucleoside queuosine (Q) from GTP. PreQ1 (pre-queuosine1) is an intermediate in the queuosine pathway, and preQ1 riboswitch, as a type of riboswitch, is an RNA element that binds preQ1. The preQ1 riboswitch is distinguished by its unusually small aptamer, compared to other riboswitches. Its atomic-resolution three-dimensional structure has been determined, with the PDB ID 2L1V.