Fig. 12
Optical microscopy images of 2–4 µm large HEWL, 5–10 µm PSI and ca. 4 µm PSII microcrystals in their aqueous buffers. The buffer for HEWL1 is composed of 10% (w/v) NaCl and 50 mM sodium acetate (pH 3.5). HEWL2 additionally contains 20% (w/v) PEG 6000. PSI contained 5 mM MES (pH 6.4) and 0.02% (w/v) n-dodecyl-ß-D-maltoside. PSII contained 50 mM PIPES (pH 7.0), 5 mM CaCl2, 7% (w/v) PEG1450 and 25% (w/v) PEG6000.
