Table 1.
Comparison of G-values for SSBs (GSSB), DSBs (GDSB) and loss of supercoil (total damage, GLS) induced by UV and X-ray photoelectrons emanating from a metal substrate covered with 5 MLs of plasmid DNA.
| References | Photon Energy (eV) |
Average LEE Energy (eV) |
GLEE (× nmol/J) |
Hydration Level a | Environment | ||
|---|---|---|---|---|---|---|---|
| GSSB | GLS | GDSB | |||||
| Brun et al. [147] | 1486 | 4.0 | 400 ± 200 | Г = 2.5 | vacuum | ||
| 1486 | 4.0 | 600 ± 200 | Г ≈ 10 | Air | |||
| Alizadeh et al. [149,150] | 1486 | 5.85 | 248 ± 65 | 260 ± 50 | Г = 2.5 | N2, SATP b | |
| 1486 | 5.85 | 226 ± 59 | 247 ± 64 | - | Г = 5 ± 1 | N2, SATP | |
| 1486 | 5.85 | 223 ± 57 | 309 ± 80 | - | Г = 10 ± 1 | N2, SATP | |
| 1486 | 5.85 | 268 ± 70 | 412 ± 107 | 21 ± 5 | Г = 20 ± 1 | N2, SATP | |
| 1486 | 5.85 | 1545 ± 403 | 1852 ± 482 | 21 ± 5 | Г = 33 ± 1 | N2, SATP | |
| Alizadeh et al. [148] | 1486 | 5.85 | 227 ± 15 | Г = 2.5 | N2, SATP | ||
| 415 ± 15 | Г = 2.5 | O2, SATP | |||||
| Alizadeh et al. [148,151] | 1486 | 5.85 | 206 ± 54 | 288 ± 75 | 10 ± 3 | Г = 2.5 | N2 + O2, SATP |
| 1486 | 5.85 | 432 ± 112 | 473 ± 123 | - | Г = 2.5 | O2, SATP | |
| Alizadeh et al. [152] | 1486 | 5.85 | 540 ± 80 | 737 ± 110 | 46 ± 66 | Г = 2.5 | N2O, SATP |
| Liu et al. [153] | 3.1–5.2 c | 0.75 | 47 ± 37 | 49 ± 38 | - | Г = 2.5 | N2, SATP |
a: Г, moles of water per mole of nucleotides. b: standard atmospheric temperature and pressure. c: produces electrons with maximum energy of 1.5 eV, calculated from subtracting the work function of substrate from the photon energy.