| Budget Amount *help |
¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Fiscal Year 2011: ¥390,000 (Direct Cost: ¥300,000、Indirect Cost: ¥90,000)
Fiscal Year 2010: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
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| Research Abstract |
The small and wide angle neutron scattering instrument, TAIKAN, was installed on BL15 in the Materials and Life Science Experimental Facility(MLF) of J-PARC. The beam commissioning was started in January 2012, and Users program was started in March 2012.TAIKAN is designed for efficient measurement in wide-q range of 0.005～ 20[A-1]. 840 3He PSD tubes with 8mm in diameter and 500-1000 mm in effective length were mounted on three detector banks of small-, middle-, and high-angle. In this study, we measured three typical proteins of Myoglobin(Mb),β-Lactoglobulin(LG), and Hemoglobin(Hb) in solution by using TAIKAN, in order to verify the performance of wide-q range. The internal structure of Mb and LG is Helix-rich andβ-sheet-rich, respectively. Hb is composed of 4 sub-units. The sub-unit structure is similar to Mb. According to those three neutron scattering profiles calculated from each atomic coordinate data of Protein Data Bank, they show the drastically difference by the influence of each internal structure within the range of q from 0.2 to 1[A-1]. This indicates the benefit of wide-q measurement to enable the analysis of the intramolecular domain structures and secondary structures.
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