| Metal site id | Bound amino acids | Bound ligands IDs |
| 5CRH-CA-1 | D2 | ASP A.113 ASP B.113 HOH A.740 HOH A.821 HOH B.558 |
| 5CRH-CA-2 | D1E1 | ASP B.290 GLU A.117 HOH A.637 HOH B.716 |
| 5CRH-CA-3 | D2 | ASP A.121 ASP B.290 HOH A.544 HOH A.753 HOH A.773 |
| 5CRH-CA-4 | D2E1 | ASP A.259 ASP A.261 GLU B.128 HOH A.547 HOH A.638 HOH B.694 |
| 5CRH-CA-5 | D1E2 | ASP A.261 GLU A.331 GLU B.135 HOH A.534 HOH B.542 HOH B.611 |
| 5CRH-CA-6 | E3 | GLU A.264 GLU A.331 GLU B.135 HOH A.529 HOH A.567 HOH B.628 |
| 5CRH-CA-7 | D2 | ASP A.290 ASP B.121 HOH A.525 HOH B.548 HOH B.625 HOH B.644 |
| 5CRH-CA-8 | D1E1 | ASP A.290 GLU B.117 HOH A.743 HOH A.811 HOH B.709 |
| 5CRH-CA-9 | D2E1 | ASP B.259 ASP B.261 GLU A.128 HOH A.518 HOH B.680 |
| 5CRH-CA-10 | D1E2 | ASP B.261 GLU A.135 GLU B.331 HOH A.604 HOH A.726 HOH B.522 |
| 5CRH-CA-11 | E3 | GLU A.135 GLU B.264 GLU B.331 HOH A.580 HOH B.523 HOH B.723 |