Figure 4From: Similarity of Recombinant Human Perlecan Domain 1 by Alternative Expression Systems Bioactive Heterogenous Recombinant Human Perlecan D1Circular dichroism of 5.6 μM Pln.198 and 8.4 μM Pln.247 in 25 mM HEPES, 100 mM NaCl, pH 7.4 with baseline subtraction and FFT filter. The differences in the spectra suggest a structural difference in the two proteins, likely due to the addition of the 47 amino acids on Pln.247 that form a cysteine knot.Back to article page