CtRNA
| ctRNA | |
|---|---|
Predicted secondary structure and sequence conservation of ctRNA_p42d | |
| Identifiers | |
| Symbol | ctRNA_p42d |
| Rfam | RF00489 |
| Other data | |
| RNA type | Gene; antisense |
| Domain(s) | Bacteria |
| SO | SO:0000644 |
| PDB structures | PDBe |
In molecular biology ctRNA (counter-transcribed RNA) is a plasmid encoded noncoding RNA that binds to the mRNA of repB and causes translational inhibition. ctRNA is encoded by plasmids and functions in rolling circle replication to maintain a low copy number. In Corynebacterium glutamicum, it achieves this by antisense pairing with the mRNA of RepB, a replication initiation protein. In Enterococcus faecium the plasmid pJB01 contains three open reading frames, copA, repB, and repC. The pJB01 ctRNA is coded on the opposite strand from the copA/repB intergenic region and partially overlaps an atypical ribosome binding site for repB.