Abstract
Crystals of polypeptide with sequence (Pro-Pro-Gly) 10 were grown in the Advanced Protein Crystallization Facility during the US Space Shuttle STS-95 Mission. Well diffracting crystals were obtained by dialysis; they provided the highest resolution X-ray data so far collected for a collagen-like triple helical structure (Berisio et al., Acta Crystallogr. D 56 (2000) 55). During the Mission the crystal growth was monitored by a CCD video camera. The image analysis provided information on spatial distribution of crystals, their movements and their growth. The spatial distribution was non-uniform inside the reactors. Limited motions were observed. The linear growth rate indicates that, in some cases, the growth did not cease in the microgravity environment.
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