Crystals from apoferritin which is an iron-free form of protein ferritin were obtained from protein mixtures lysozyme/apoferritin using sedimentation under high gravity. Solution containing apoferritin at concentration as high as 5mg/ml in the presence of 25mg/ml lysozyme and overlaid on 5%(w/v) CdSO₄ in 0,2M/L NaAC, pH=5 still favors apoferritin crystal formation under normal gravity conditions, but at apoferritin concentrations <0,5mg/ml (~1,14μM/L) in 25mg/ml (~1,71mM/L) lysozyme only the sedimentation in a centrifuge appears to be useful for separating the apoferritin molecules from the mixture followed by apoferritin crystallization in the same system. The very high molecule number ratio (~1:1000) of two proteins is used to stress on the observed effect.

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