Fig 6. Fluorescence emission spectra of the Haloferax volcanii S-layer protein at 25°C, pH 6.8, in different salt concentrations.
A: 0.001 M CaCl2; B: 0.01 M CaCl2; C: 2.14 M NaCl and 0.01 M CaCl2; D: 0.25 M MgCl2; E: 2.14 M NaCl and 0.25 M MgCl2.
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