Functional Information from GO Data
| Chain | GOid | namespace | contents |
| A | 0005509 | molecular_function | calcium ion binding |
| A | 0009523 | cellular_component | photosystem II |
| A | 0009654 | cellular_component | photosystem II oxygen evolving complex |
| A | 0015979 | biological_process | photosynthesis |
| A | 0019898 | cellular_component | extrinsic component of membrane |
| B | 0005509 | molecular_function | calcium ion binding |
| B | 0009523 | cellular_component | photosystem II |
| B | 0009654 | cellular_component | photosystem II oxygen evolving complex |
| B | 0015979 | biological_process | photosynthesis |
| B | 0019898 | cellular_component | extrinsic component of membrane |
Functional Information from PDB Data
| site_id | AC1 |
| Number of Residues | 4 |
| Details | BINDING SITE FOR RESIDUE ZN A 1 |
| Chain | Residue |
| A | GLU107 |
| A | HIS111 |
| A | ASP137 |
| B | GLU133 |
| site_id | AC2 |
| Number of Residues | 4 |
| Details | BINDING SITE FOR RESIDUE ZN A 3 |
| Chain | Residue |
| A | HIS76 |
| A | ASP116 |
| B | GLY17 |
| B | HOH239 |
| site_id | AC3 |
| Number of Residues | 4 |
| Details | BINDING SITE FOR RESIDUE ZN B 2 |
| Chain | Residue |
| B | HIS76 |
| B | ASP116 |
| B | HOH240 |
| A | GLY17 |
| site_id | AC4 |
| Number of Residues | 4 |
| Details | BINDING SITE FOR RESIDUE ZN B 4 |
| Chain | Residue |
| A | GLU133 |
| B | GLU107 |
| B | HIS111 |
| B | ASP137 |
Functional Information from SwissProt/UniProt
| Chain | Residue | Details |
| A | CYS22 | |
| B | CYS22 | |
