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. 2022 Sep 23;27(7):679–689. doi: 10.1007/s00775-022-01962-3

Table 2.

WSD values quantifying an average change in α-LA tertiary structure in the presence of studied salts

Salts Weighted spectral difference (WSD) (mdeg)
100 mM 300 mM
MgCl2 0.37 2.13
CaCl2 0.52 0.68
NaCl 0.71 1.33
KCl 0.43 0.73
NH4Cl 0.19 0.91
CsCl 0.29 0.72
Control 0.99

A higher value denotes a more significant change. In the case of the control sample, the WSD value represents a change in the tertiary structure of α-LA induced solely by the pH decrease from 5.6 to 2.0