Table 1. Results of ESI-MS Analysis of Species Formed upon Reaction of DNA with 1Pt–Glu and 2Pt–Glua.
| metal complex | signal (m/z) | signal charge | exp MW (Da) | theoretical MW (Da) | species |
|---|---|---|---|---|---|
| 1Pt–Glu | 1195.36 | A (−5) | 5982.92 ± 0.80 | 5983.9 | ssDNA1 |
| 1494.45 | A (−4) | ||||
| 1993.02 | A (−3) | ||||
| 1249.57 | B (−5) | 6254.45 ± 0.50 | 6255.1 | ssDNA2 | |
| 1562.22 | B (−4) | ||||
| 1358.99 | C (−9) | 12240.33 ± 0.30 | 12239 | dsDNA | |
| 1528.98 | C (−8) | ||||
| 1747.71 | C (−7) | ||||
| 2039.04 | C (−6) | ||||
| 1454.43 | D (−9) | 13096.53 ± 2.20 | 13097.8 | dsDNA + 1 (1Pt–Glu) | |
| 1636.21 | D (−8) | ||||
| 1869.85 | D (−7) | ||||
| 2182.45 | D (−6) | ||||
| 2Pt-Glu | 1195.42 | A (−5) | 5982.15 ± 0.03 | 5983.9 | ssDNA1 |
| 1494.52 | A (−4) | ||||
| 1041.25 | B (−6) | 6253.58 ± 0.27 | 6255.1 | ssDNA2 | |
| 1249.65 | B (−5) | ||||
| 1562.47 | B (−4) | ||||
| 1358.87 | C (−9) | 12238.82 ± 0.27 | 12239 | dsDNA | |
| 1528.80 | C (−8) | ||||
| 1747.43 | C (−7) | ||||
| 1135.23 | E (−6) | 6817.08 ± 0.46 | 6816.15 | ssDNA1 + 1 (2Pt–Glu) | |
| 1362.28 | E (−5) | ||||
| 1703.24 | E (−4) | ||||
| 1180.24 | F (−6) | 7087.04 ± 0.42 | 7087.35 | ssDNA2 + 1 (2Pt–Glu) | |
| 1416.32 | F (−5) | ||||
| 1451.31 | G (−9) | 13071.34 ± 0.87 | 13071.3 | dsDNA + 1 (2Pt–Glu) | |
| 1632.80 | G (−8) | ||||
| 1866.53 | G (−7) |
a
The m/z values detected in MS spectra and their relative charges as well as experimental (exp) and theoretical (theor) monoisotopic mass values and the corresponding ion species are reported. dsDNA = double stranded DNA; ssDNA = single stranded DNA.