“…The purification and crystallization procedures were as described. 18,19 Crystals of the full-length monomeric were grown in space group P2 1 (cell parameters a = 59.5 Å, b =92.6 Å, c =76.3 Å, β = 111.8°) with one molecule per asymmetric unit. X-ray diffraction data (Table 2) were collected on the MPG beamline BW6, DESY/HASYLAB, Hamburg, using a 165 mm MarCCD detector.…”