| Id | Element | Ion | Binding family | Amino acids or nucleotide residues names | All bound residues | Is homomer | Number of bound amino acids or nucleotide residues | Number of all bound residues | Number of coordinating chains | Representative |
|---|---|---|---|---|---|---|---|---|---|---|
| 4V4C-CA-1 | CA | Ca²⁺ | I1N1R1 | ARG.ASN.ILE. | ARG.ASN.HOH.ILE. | ✘ | 3 | 6 | 2 | ✘ |
| 4V4D-CA-1 | CA | Ca²⁺ | I1N1R1 | ARG.ASN.ILE. | ARG.ASN.HOH.ILE. | ✘ | 3 | 6 | 2 | ✘ |
| 4V4E-CA-1 | CA | Ca²⁺ | I1N1R1 | ARG.ASN.ILE. | ARG.ASN.HOH.ILE. | ✘ | 3 | 6 | 2 | ✔ |