| ccdB | controller of cell death B protein |
| ClpP | caseinolytic protease P |
| ClpX | AAA+ chaperone (clpX-type) |
| CPEC | circular polymerase extension cloning |
| SICLOPPS | spli-intein mediated circular ligation of peptides and proteins |
| ssrA | proteolysis tag peptide |
| TEDA | T5 exonuclease-dependent assembly |
| TEV | tobacco etch virus |
| MBP | maltose binding protein |