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. Author manuscript; available in PMC: 2019 Oct 1.
Published in final edited form as: Eur Biophys J. 2018 Apr 19;47(7):789–797. doi: 10.1007/s00249-018-1301-7

Figure 1.

Figure 1

Left: Overlay of normalized spectra for apo-HSA (black), HSA complexed with porphyrin (PPIX) bound to either Zn (blue) or Sn (red); center: HSA complexed to porphyrin bound to Sn (red) and difference spectrum when the HSA absorbance is subtracted (black); right: HSA complexed to porphyrin bound to Zn (blue) and difference spectrum when the HSA absorbance is subtracted(black)