Table 1. Main characteristics of Cu/Zn SOD protein sequences identified in P. cochleariae.
| PcSOD3.1 | PcSOD3.2 | PcSOD1 | |
|---|---|---|---|
| Protein (aa) | 171 | 177 | 153 |
| Signal peptide | Yes (aa 1–16) | Yes (aa 1–20) | no |
| Molecular mass (kDa) | 17.8 | 18.8 | 15.9 |
| N-Glycosylation | N in position 36 | N in position 43 | N in position 23 |
| Cysteine residues forming disulphide bonds | Cys74-Cys163 | Cys79-Cys169 | Cys56-Cys144 |
| Zn2+ binding site | H80, H88, H97, D100 | P85, H93, N102, D105 | H62, H70, H79, D82 |
| Cu2+ binding site | H63, H65, H80, H137 | H68, H70, P85, H143 | H45, H47, H62, H119 |
| Active site | H63, H65, H80, H97, D100, H137 | H68, H70, P85, N102, D105, H143 | H45, H47, H62, H79, D82, H119 |