Table 2.
Certain distances (Å) between key atoms, 2 H+case. Interatomic distances in which the position of the proton makes a difference of at least 3 Å are italicized. All such cases involve F180 or F233.
| 2 H+ (Locations Shown) | H+: Up + Mid (E183, E226) | H+: Mid + Down (E226, K306) | H+ (Up) E183 + Cys300 |
|---|---|---|---|
| CA (R297)–CZ (F180) | 7.02 | 8.83 | 7.23 |
| NH1 (R297)–S (C300) | 5.43 | 5.94 | 5.42 |
| NH1 (R297)–CZ (F180) | 5.32 | 6.18 | 5.58 |
| OE2 (E183)–CZ (F180) | 6.17 | 5.92 | 6.04 |
| N (R303)–CZ (F233) | 3.65 | 6.87 | 4.20 |
| NZ (K306)–CZ (F233) | 7.34 | 4.04 | 7.35 |
| N (R303)–K (306) | 9.40 | 10.20 | 8.99 |