Figure 5
From: Design and applications of a clamp for Green Fluorescent Protein with picomolar affinity

Protein purification using GFP-clamps. A fusion protein between sfGFP and maltose binding protein (GFP_MBP) is purified from crude E. coli extract with a GFP affinity resin. M: Protein size marker; CE: crude extract; FT: flow-through, E: elution with 3C-protease; RI: purified MBP after removal of His-tagged 3C-protease by reverse IMAC. The gel image was recorded from a single gel.