タンパク質を物性科学的に見た場合、単なるアミド結合の集合体であると片づけるにはもったいなさすぎる

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1 Precise Functional Analysis of Biological Macromolecules Promoted by the Encounter of Crystallographic and Spectroscopic Molecular Structure Analyses Takamitsu Kohzuma*, Sachiko Yanagisawa, and Tomotake Niizeki Faculty of Science, Ibaraki University The three dimensional structure of protein molecule is an essential for the comprehension of numerous life phenomena and the industrial utilization of biological systems. It is important to determine the three dimensional structure of biological macromolecule components by a certain techniques, X-ray crystallographic structure analysis, neutron crystallographic structure analysis or NMR. Although these structure analyses are very sophisticated methods for the determination of the biological macromolecule, the spectroscopic techniques are very important for the complete understanding of the time-dependent biological phenomena accompanying with the structural alternation of the relevant functional components, such as proteins and nucleic acids. The UV resonance Raman spectroscopy is introduced as an example for the precise local structure analysis with the X-ray crystallographic structure of protein molecules. DNA X NMR X X X

2 H + Vol. 7 (No. 2), NMR

3 1000 O 2 O 2 O 2 T R T R T 215cm -1 R 221cm -1 T R T R Kitagawa T O 2 H + C 13 =C 14 K L M N O / Cu(II) Dave S Cu(II)-S - Cu-S - Kohzuma

4 EPR S 195 nm 210 nm nm Kr nm 280 nm 235 nm nm Ar nm 260 nm 260 nm 257 nm

5 (a) ph 4.0 (b) ph 6.9 (c) ph 11.0 (a) 244 nm 244 nm (b) 244 nm (a)

6 ph (b) (c) 244 nm 1616 cm -1 (Y8a) 1604 cm cm -1 pk a 880 cm -1 W17 NH 1360 / 1340 cm -1 I (1360) / I (1340) 1 1 C α C β -C 3 C 2 2 χ 2,1 11 NCN ND 12 N ph* pk a 1602 cm -1 C 4 C 5 C α C β -C 4 C 5 χ 2, cm cm cm C 4 C cm

7 T R ph 229nm Bohr 15 Nagai His (HRP) IX 6 His42( His) Arg38 Asn X Hashimoto 17 SOD O - 2 O 2 H 2 O 2 SOD O OD nm nm Cys78 Met86 His40 His81 20

8 244 nm H 2 O D 2 O H81 M86 Cu C78 H40 (a) (b) Cu(II)PAz 235 nm Cu(II)PAz 1612 cm cm cm cm cm -1

9 1384 cm -1 His cm cm -1 (Cu(I)PAz) 1384 cm cm -1 His nm Cu(II)PAz 1384 cm -1 Cu(I)PAz 15 cm -1 Cu(I)PAz 21 (II) (II) ( ) Cu(II)PAz Cu(I)PAz

10 (235 nm (235 nm ) ) (235 nm ) (235 nm )

11 Photosystem I Photosystem II 22 Photosystem I Freeman 23 Freeman

12 24 Sykes 25 acidic patch acidic patch Ubbink 26 Hirota nm 590 nm 387 mv 20 mv Yamauchi 30 acidic patch

13 31 Kostic

14

15 Freeman Kostic Ubbink Dennison Vila Sykes References 1. 7, 1-17 (2001). 2. A. T. Tu. 3. K. Nagai, T. Kitagawa and H. Morimoto, J. Mol. Biol., 136, 271 (1980). 4. S. O. Smith, J. Lugtenburg, R. A. Mathies, J. Membrane Biol., 85, 95 (1985). 5. B. C. Dave, J. P. Germanas, R. S. Czernuszewicz, J. Am. Chem. Soc., 115, (1993). 6. T. Kohzuma, J. Biol. Chem. 270, 43, (1995). 7. T. Kitagawa, Prog. Biophys. Molec. Biol., 58, 1 (1992). 8. H. Takeuchi, Y. Kimura, I. Koitabashi and I. Harada, J. Raman Spectrosc., 22, , (1991) 9. H. Takeuchi, N. Watanabe, I. Harada, Spectrochim. Acta, 44A, (1988). 10. I Harada and H. Takeuchi, in R. J. H. Clark and R. E. Hester (Eds.), Spectroscopy of Biological Systems, John Wiley & Sons Ltd., (1986). 11. M. Tasumi, I. Harada, T. Takamatsu, S. Takahashi, J. Raman Spectroscopy, 12,

16 (1982). 12. L. M. Markham, L. C. Mayne, B. S. Hudson, M. Z. Zgierski, J. Phys. Chem., 97, (1993). 13. H. Takeuchi, Y. Kimura, I. Koitabashi and I. Harada, J. Raman Spectrosc., 22, , (1991). 14. T. Miura, T. Satoh, A. Hori-i and H. Takeuchi, J. Raman Spectrosc., 29, (1998). 15. X. Zhao, D. Wang, T. G. Spiro, J. Am. Chem. Soc. 120, (1998). 16. M. Nagai, M. Aki, R. Li, Y. Jin, H. Sakai, S. Nagatomo, T. Kitagawa, Biochemistry, 39, 43, (2000). 17. S. Hashimoto and H. Takeuchi, J. Am. Chem. Soc., 120, (1998). 18. S. Hashimoto, K. Ono, H. Takeuchi, J. Raman. Spectrosc., 24, (1998). 19. K. Sato, S. Nagatamo, C. Dennison, T. Niizeki, T. Kitagawa, T. Kohzuma, Inorg. Chim. Acta, in press. 20. T. Inoue, N. Nishio, S. Suzuki, K. Kataoka, T. Kohzuma, Y. Kai, J. Biol. Chem., 274, (1999). 21. S. Yanagisawa, M. Aki, T. Kitagawa, T. Kohzuma, unpublished results. 22. S. Katoh and A. Takamiya, Nature, 189, 665 (1961). 23. P. M. Colman, H. C. Freeman, J. M. Guss, M. Murata, V. A. Norris, J. A. Ramshaw, M. P. Venkatappa, Nature, 272, (1978). 24. J. M. Guss, P. R. Harrowell, M. Murata, V. A. Norris, H. C. Freeman, J. Mol. Biol., 192, (1986). 25. M. G. Segal, A. G. Sykes, J. Am. Chem. Soc., 100, 4585 (1978) 26. P. Crowley, G. Otting, B. G. Schlarb-Ridley, G. W. Canters, M. Ubbink, J. Am. Chem. Soc., in press. 27. S. Hirota, M. Endo, K. Hayamizu, T. Tsukazki, T. Takabe, T. Kohzuma, O. Yamauchi, J. Am. Chem. Soc., 121, (1999). 28. T. Kohzuma, T. Inoue, F. Yoshizaki, Y. Sasakawa, K. Onodera, S. Nagatomo, T. Kitagawa, S. Uzawa, Y. Isobe, Y. Sugimura, M. Gotowda, Y. Kai, J Biol. Chem., 274, (1999). 29. T. Inoue, M. Gotowda, H. Sugawara, T. Kohzuma, F. Yoshizaki, Y. Sugimura, Y. Kai, Biochemistry, 38, (1999). 30. O. Yamauchi, A. Odani, T. Kohzuma, H. Masuda, K. Toriumi, K. Saito, Inorg. Chem., 28, (1989). 31. E. V. Pletneva, D. B. Fulton, T. Kohzuma, N. M. Kostic, J. Am. Chem. Soc., 122, (2000).

46 12 3 1 ATP ( ) ATP ~P 1~P hyd Gº 1 1 1950 ~P hyd Gº Hansia et al. Biophys Chem 119: 127, 2006 ~P hyd Gº 1? ATP hyd Gº ATP ATP ATP ~P ε ~P George [BBA 223: 1, 1970] ~P 2) hyd Gº 1. ph Mg 2+ 2. 1 2 2

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