4.6.1.21	additional information	the three-dimensional structure of enzyme CdiA-CTECL reveals similarity to the C-terminal nuclease domain of colicin E3. The resolved C-terminal domain of enzyme CdiA-CTECL consists of an N-terminal alpha helix, followed by a twisted five-stranded antiparallel beta sheet. The domain contains two long loops, L2 and L4, which connect beta1 to beta2 and beta3 to beta4, respectively	-, 730982	
4.6.1.21	physiological function	the 16S rRNase enzyme is a contact-dependent growth inhibition toxin unvolved in inter-bacterial competition. CdiA-CTECL cleaves 16S rRNA in vivo to inhibit cell growth, overview	-, 730982