| Budget Amount *help |
¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2015: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2014: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2013: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
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| Outline of Final Research Achievements |
When Paramecium eats yeast cells on which heavy elements such as uranium were fixed as phosphate mineral, the heavy element phosphates were excreted from Paramecium, mostly undissolved, and migrated into membrane-like precipitates in which digestion residues of yeast cells were connected with each other by dense organic substances. We found that Paramecium has an ability to reduce adsorption of heavy elements on cells through the process where heavy elements are adsorbed to the soluble huge glycoproteins on Paramecium cell surfaces and subsequently the glycoproteins are dissolved into aqueous phase. These glycoproteins are easily polymerized in aqueous phase. These results show heavy elements are transformed to pseudocolloid by Paramecium and also suggest that the membrane-like precipitates may be formed with the glycoprotein binding digestion residues of yeast cells.
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