Bands | Range (cm−1) | Free HSA | DA concentrations | ||||
Amide I | 1700 - 1600 | 0.0 | 0.3 mM | 0.4 mM | 0.5 mM | 0.6 mM | 0.7 mM |
| β-sheets | 1609 | --- | 1609 | --- | 1610 | 1610 |
| β-sheets | 1622 | 1621 | 1622 | 1622 | 1623 | 1623 |
| Random | 1636 | 1636 | 1636 | 1636 | 1636 | 1636 |
| α-helix | 1656 | 1654 | 1655 | 1655 | 1655 | 1655 |
| Turns | 1681 | 1681 | 1681 | 1680 | 1680 | 1681 |
| β-sheets | 1695 | 1695 | 1695 | 1695 | 1695 | 1695 |
Amide II | 1600 - 1480 |
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| β-sheets | 1493 | 1494 | 1494 | 1495 | 1495 | 1494 |
| Random | 1520 | 1523 | 1521 | 1523 | --- | --- |
| α-helix | 1540 | 1542 | 1543 | 1543 | 1544 | 1544 |
| Turn | 1574 | 1575 | 1576 | 1576 | 1575 | 1575 |
β-sheets | 1592 | 1594 | 1593 | 1593 | 1593 | 1593 | |
Amide III | 1320 - 1220 |
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β-sheets | 1231 | 1231 | 1231 | 1231 | 1231 | 1231 | |
| β-sheets | 1245 | 1245 | 1245 | 1245 | 1245 | 1245 |
| Random | 1268 | 1271 | 1268 | 1267 | 1270 | 1268 |
| turn | 1294 | 1293 | 1293 | 1293 | 1291 | 1290 |
| α-helix | 1310 | 1309 | 1310 | 1310 | 1310 | 1310 |