Table 4.
Hydrogen bonding between arginase I residues and charged arginine.
| Res. Id. | Protein atom |
substrate atom |
% occurrence | |
|---|---|---|---|---|
| Arg+ & OH− |
Arg+ | |||
| Donor | Acceptor | |||
| Asn130 | ND2 | OT1 | 28.02 | 22.18 |
| Thr135 | OG1 | OT1 | 0.01 | NA |
| Thr136 | OG1 | OT1 | 0.01 | NA |
| Ser137 | OG | OT1 | 16.39 | 7.57 |
| Ser137 | OG | OT2 | 61.42 | 37.2 |
| Asn139 | ND2 | OT2 | 0.27 | 0.05 |
| Acceptor | Donor | Arg+ & OH− |
Arg+ | |
| Asp128 | OD | NE | 101.57 | 31.53 |
| Asp128 | OD | NH1 | 20.62 | 11.47 |
| His141 | O | NH1 | 94.12 | 36.48 |
| His141 | O | NE | 0.01 | 0.17 |
| Asp181 | OD | N | 19.21 | NA |
| Asp183 | OD | N | 5.26 | 40.8 |
| Glu186 | OE | N | 14.91 | 0.69 |
| Asp232 | OD | NH1 | NA | 0.14 |
| Thr246 | OG1 | NH2 | 97.25 | 27.89 |
| Glu277 | OE | NH1 | 99.98 | 40.19 |
| Glu277 | OE | NH2 | 71.13 | 47.91 |
NA: No hydrogen bond observed.