Contacts Involving Buried Residues (boldface) Conserved in More Than 70% of Metallochaperone and Metal Transporter Model Structures
| First residue | Second residue | Occurrence (no. of structures) |
| 7 (β1) | 9 (β1) | 40 |
| 7 (β1) | 58 (α2) | 52 |
| 9 (β1) | 47 (β3) | 56 |
| 9 (β1) | 61 (α2) | 49 |
| 9 (β1) | 62 (α2) | 50 |
| 9 (β1) | 65 (α2) | 40 |
| 11 (L1) | 14 (L1) | 53 |
| 11 (L1) | 65 (α2) | 44 |
| 11 (L1) | 73 (L5) | 41 |
| 11 (L1) | 75 (L5) | 51 |
| 14 (L1) | 20 (α1) | 45 |
| 20 (α1) | 21 (α1) | 46 |
| 20 (α1) | 42 (L3) | 44 |
| 22 (α1) | 23 (α1) | 53 |
| 23 (α1) | 24 (α1) | 55 |
| 23 (α1) | 26 (α1) | 42 |
| 23 (α1) | 27 (α1) | 46 |
| 23 (α1) | 65 (α2) | 56 |
| 26 (α1) | 27 (α1) | 54 |
| 27 (α1) | 30 (L2) | 44 |
| 27 (α1) | 38 (β2) | 53 |
| 27 (α1) | 49 (β3) | 53 |
| 27 (α1) | 61 (α2) | 47 |
| 27 (α1) | 64 (α2) | 40 |
| 30 (L2) | 61 (α2) | 47 |
| 35 (β2) | 49 (β3) | 45 |
| 35 (β2) | 51 (β3) | 40 |
| 38 (β2) | 49 (β3) | 56 |
| 40 (β2) | 47 (β3) | 56 |
| 49 (β3) | 51 (β3) | 44 |
| 49 (β3) | 61 (α2) | 52 |
| 58 (α2) | 61 (α2) | 40 |
| 60 (α2) | 61 (α2) | 50 |
| 61 (α2) | 62 (α2) | 45 |
| 62 (α2) | 75 (L5) | 46 |
| 64 (α2) | 65 (α2) | 53 |
| 65 (α2) | 66 (α2) | 54 |
| 65 (α2) | 75 (L5) | 52 |
| 66 (α2) | 75 (L5) | 40 |
[i] Secondary structure elements are indicated in parentheses.