| Project/Area Number |
22760001
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Applied materials science/Crystal engineering
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| Research Institution | Tohoku University |
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Principal Investigator |
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| Project Period (FY) |
2010 – 2011
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| Project Status |
Completed (Fiscal Year 2011)
|
| Budget Amount *help |
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2011: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2010: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
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| Keywords | 結晶成長 / 電場印加 / 核形成速度 / タンパク質 / 電気二重層 / インシュリン |
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| Research Abstract |
The establishment of novel techniques for the crystallization of proteins is necessary. In previous work, we have succeeded in controlling the nucleation rate of hen-egg white lysozyme crystals under application of an external ac electric field. Moreover, we have also suggested that the electric double layer (EDL)formed at the interface play a key role for this crystallization technique. In this subject, therefore, we controlled the effect of the external electric field on the nucleation rate by regulating the thickness of the EDL formed at the interface by using the various precipitants and concentrations. In addition, we also controlled the nucleation rate for porcine insulin using this crystallization technique. This suggests that this crystallization technique be also adapted to almost all proteins.
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