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Fig. 4 | BMC Biophysics

Fig. 4

From: Structure and domain dynamics of human lactoferrin in solution and the influence of Fe(III)-ion ligand binding

Fig. 4

Experimental structure factors S(Q,c) (symbols) for the highest concentrations of c ≈ 50 mg/ml. Curves are displaced successively by adding 0.1 for better visibility. The partially saturated and iron free samples decline towards Q = 0 and can be well described by a hard-sphere model (solid lines: Percus-Yevick structure factor fit). Both fully iron saturated samples show an upturn at small Q, indicating attractive behavior. This can be modeled as hard spheres with Debye-Hückel like attraction (solid lines: Hayter-Penfold structure factor fit)

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