PAI21. (nattokinase) (nattokinase) [1 3 ],, ( Bicillus subtilis ,,,, , [9,10 ], PA,,

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1 23 4 CHINA BIOTECHNOLOGY ( ),, : ; t2pa ; ; (PAI21) PAI21 (nattokinase) , (nattokinase) [1 3 ],, ( Bicillus subtilis var. natto), [2 ],,,, [4,5 ],,,DNA [11 ], [9,10 ],,,,,,,,,, 1995 [12 ], [13 ],,,, [14 ], [15 ],,,, : com,, 1, 1, [17,18 ] ( PA), (plasminogen) (plasmin),, (PA) PA (a22ap) 1,,,, (t2ap), (u2pa), PA,, ( PAI21) a 2 2 (a 2 2AP)

2 54 23, t2pa u2pa, (SK) (SAK) [20 ],,, 1413kD,36kD [18,19 ],, t2pa u2pa pai21 a22ap ( ),pro2uk, t2pa,t2pa, [19 ], pai21 pai21, t2pa,,,, pai21, t2pa,,,, 2,,37 [1 4 ] (pro2urokinase),,, Len2Tyr,Ser2His, Glu2His His2Len [3 ], Fujita [17 ],,,, 175kD 110kD 41kD 3 t2pa (t2pa) [5,6,10 ], t2 PA,, t2pa (pai21),, [3,5 ],, 4 8min,, ELSA [4 ],,t2 PA,t2PA,, t2pa 6 7ngΠml, 4h, t2pa 10ngΠml [3,4 ],, t2 PA, t2pa, t2pa,,, [19 ],, [6,7 ],,,,,,,, 90min,,,

3 4 : 55 2 rppai21 rppai21 Arg3462 Met347, (P12P1 ), rppai21, t2pa :012nmolΠL t2pa h, 4nmolΠL rppai21, h, rppai21 2 t2pa, t2pa, 4, 1nmolΠL, ( pai21) h, rppai,t2pa,,, NAT 4 PAI21 BSP,, [16 19 ], (t2pa) PAI21 PAI21 t2pa PAI21, PAI21, PAI21,t2PA, Urono [19 ], PAI21,, E. coli PAI2 1,PAI21 (rppai21) 4 PAI21, rpai21,, XIa ( nmolΠL ), 3,, Xa PAI21 rppai21, PAI21, 011nmolΠL, PAI21, 5 3 PAI21,,

4 56 23,, 5, : 5 A1 B1 C1 t2pa D1, PAI21, :, [ 1 ] Sumi Hamada, H Tsushima, et al1a novel fibrinolytic enzyme (Nattokinase) in the vegetable cheese Natto :Atypical and popular Soybean food in the Japanese diet, Experientia,1987,43 : [ 2 ].,Bioindustry,1990,7 (11) [ 3 ].,,1991,29 (2) : [ 4 ] Yoshikazu Yuki,Nakagawa T,Fujita M,et al. A Sandwich enzyme2 linked immunosorbent asay for nattokinase. Biosci Biotech Biochem,1994,58 (2) : [ 5 ] Toshio Hara, Hamada H,Nakanish K, et al. A Simple, easy and routine assay of thrombolytic enzyme activity, Nippon Shoukuhin Kagaku Kashi,1996,43 (2) : [ 6 ] Sumi H, Hamada N, Nakanishi K, et al. Enhancement of the fibrinolytic activity in plasma by Oral administration of nattokinase. Acta Haematol,1990,84 (1) : [ 7 ],,. g g g g } g [J ]., 1996,43 (10) :46 49 [ 8 ] Fujita M,Nomara K,Hong K,et al. Purification and chracterization of a strong fibrinolgtic enzyme (nattokinase) in the vegetable cheese natto. A popular soybean ferme2nted food in Japan. Bioch and Biophy,Research Communication,1993,197 (3) : [ 9 ] Fujita M,HongK,ItoY,et al. Thrombolytic effect of nattokinase on a chemically induced therombosis model in rat, Bio Pharm Bull, 1995,18 (10) : [ 10 ] Fujita M Hong K, Ito Y,et al. Transport of NK across of the rat intestinal tract. Biol Pharm Bull,1995,18 (9) : [ 11 ] Nakamura T, Yamagata Y, Ichishima E,et al. Nucleotide sequence of the subtilisin NAT gene, aprn. of Bacillus subtilis ( Natto ). Biosci Bioteeh Biochem,1992, [ 12 ],.,, 1995,15 (5) :46 49 [ 13 ],,,.,,1996,3 (3) : [ 14 ],,,., (5) :18 20 [ 15 ],,,..,1999, (6) [ 16 ] Kyu2sil Choi, Sandra L, Fitzpatrick, et al. Regulation of plasmin dependent fibrin clot lysis by annexin Biological Chemidtrg,2001,276 (2) : hetero2tetramer. J of [ 17 ] Fujita M, Ito Y, Hong K, et al. Characterization of nattokinase2 degraded products from humen fibrinogen or cross2linked fibrin. Fibinolysis,1995, (9) : [ 18 ] Chavakis T,Robin A,Pixley I,et al. A novel antithronbotic role for high molecular weight kininogen as inhibitor of plasminogen activator inhibitor function.j Biol Chem,2002,277 (36) : [ 19 ] Urono T, Hayato I, Kazuo U et al : The profibrinolytic enzyme subtilisin NAT purified from bacillus subtilis cleaves and inactivates plasminogen activator inhibitor type1. J Biol Chem, 2001,276 (27) : [ 20 ],,.,,1999,2 (11) :39 42 (61 )

5 4 : 61 mediated by low energy ion beam, Chinese Rice Research Newsletter,2002 (2) :10 12 [ 34 ] Lifang Wu, Hong Li, Huiyun Feng, et al. Introduction of rice chitinase gene into wheat via low energy Ar + beam implantation, Chinese Science Bulletin,2001 (4) :46 48 [ 35 ],,.,,1997,25 (2) : [ 36 ]. 2,,2000,14 (4) : [ 37 ],,,.,,2001,11 (3) : [ 38 ],,. SCAR,,2002,12 (8) :38 41 [ 39 ],,. DNA,,1996,10 (3) : [ 40 ],,.,,1994,39 (16) : [ 41 ],,.,,1999,21 (5) : [ 40 ],,.,,1998,18 (4) :25 27 [ 43 ].,2000,3 [ 44 ],,. C,,1999,29 (2) :16 19 [ 45 ],,.,,2000,16 (4) : [ 46 ] Venue the Royal Society, London Organiger Japan Science Foundation,London Vise Mens Conference for the Human Fronter Science Program,Apr. 1,1987 [ 47 ] Yu Z L. Study on low2energy heavy ion beam biology and application undertaken in China,The First International Symposium on Ion Beam :1 5 The Grand Progress of Lo w2energy Ion Beam in Life Sciences Yuan Chengling Yu Zengliang ( Key Laboratory of Ion Beam Bioengineering Hefei ) Abstract The observation of biological effects induced by ion implantation led quickly to research in China on the interaction between low energy ions and organisms and applications in genetic modification. The discovery of bioeffects induced by ion beam implantation has provided new opportunities for mutational breeding,gene transferring, cell modification,and cell fusion. In recent years,the ion beam implantation technique has been widely applied in many fields and has been drawn morn concern. In this paper,we summarize recent advances in research on the role of low2 energy ion beam in mechanisms and applications. Ion beam implantation,as a key technology in biological science,will be more and more important with the development of microbeams. Key words Low2energy ion beam Ion implantation Radiological effect Breeding technique (56 ) Advances in Research on Thrombolysis Mechanism of Nattokinase Cheng Lijuan 1 Sha Changqing 1 Ren Yongchun 2 Xi Xingwei 1 Wang Jialong 1 (1 Institute of Applied Microbiology Heilongjiang Academy of Sciences Harbin ) (2 Chenlong Pharmaceutical Institute of Harbin Harbin ) Abstract The article reviewed the Advances in research of Thrombolysis mechanism of Nattokinase and summarized it as follows :Direct thrombolysis ; Endogenous t2pa was produced by Nattokinase stimulating endothelium ; Pro2urokinase was activated by nattokinase ; Fibrinolysis effect was regulated by digesting and inactivating PAI21. Key words Nattokinase Fibrin Plasmin PAI21