Journal
CRYSTAL GROWTH & DESIGN
Volume 14, Issue 10, Pages 5111-5116Publisher
AMER CHEMICAL SOC
DOI: 10.1021/cg500731v
Keywords
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Funding
- Photon Factory Program Advisory Committee of KEK [2012G504, 2013G116]
- Ministry of Education, Culture, Sports, Science, and Technology of Japan [25420694]
- Grants-in-Aid for Scientific Research [26390054, 24560807, 25420694, 26506011] Funding Source: KAKEN
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Glucose isomerase crystals with thicknesses of 0.5 mm were grown using seed crystals. The thickness required for better X-ray topographic images by kinematical theory is determined by the extinction distance, xi(g). The seed crystals were cross-linked with glutaraldehyde to maintain stability for a long period before the growth experiments. Dislocations that were produced during the growth of such thick glucose isomerase crystals were observed as clearly as those in inorganic crystals via X-ray topography with monochromatic-beam synchrotron radiation, which is attributed to the high quality of the glucose isomerase crystals. This also indicates that high-quality protein crystals can be grown using seed crystals. The dislocations extended from the interface with the cross-linked seed crystal to the surface of the grown crystal; however, no dislocations were generated if the seed crystal was not cross-linked. We discuss the effect of the chemical cross-linking of the seed on the generation of dislocations from seed crystals.
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