Abstract
Activation of blood coagulation factor X to factor Xa (FXa) is inhibited by tissue factor pathway inhibitor (TFPI). The second Kunitz-type inhibitory domain (K2) of TFPI binds a catalytic domain of FXa, whereas the first domain (K1) does not. We analyzed computer models of complexes of FXa with K1 or K2, which were made using a crystal structure of FXa. Favorable hydrophobic interaction was observed in the complex of FXa with K2. Furthermore, we constructed a tertiary structure of FXa using CHIMERA to assess the accuracy of a homology modeling method. The isolated model structure of FXa agreed well with the crystal structure, but analyses of complexes of this structure with K1 or K2 revealed that the models of complexes could not provide clear evidence of greater binding ability to K2 because of the positional difference of a few side chains interacting with the inhibitor.
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REFERENCES
Bernstein, F. C., Koetzle, T. F., Williams, G. J. B., Meyer, Jr., E. F., Brice, M. D., Rodgers, J. R., Kennard, O., Shimanouchi, T., and Tasumi, M. (1977). J. Mol. Biol. 112, 535–542.
Blevins, R. A., and Tulinsky, A. (1985). J. Biol. Chem. 260, 4264–4275.
Blundell, T., Carney, D., Gardner, S., Hayes, F., Howlin, B., Hubbard, T., Overington, J., Singh, D. A., Sibanda, B. L., and Sutcliffe, M. (1988). Eur. J. Biochem. 172, 513–520.
Bode, W., Chen, Z., Bartels, K., Kutzbach, C., Schmidt-Kastner, G., and Bartunik, H. (1983). J. Mol. Biol. 164, 237–282.
Bode, W., Walter, J., Huber, R., Wenzel, H. R., and Tschesche, H. (1984). Eur. J. Biochem. 144, 185–190.
Bode, W., Mayr, I., Baumann, U., Huber, R., Stone, S. R., and Hofsteenge, J. (1989). EMBO J. 8, 3467–3475.
Broze, Jr., G. J. (1995). Annu. Rev. Med. 46, 103–112.
Fujinaga, M., and James, M. N. G. (1987). J. Mol. Biol. 195, 373–396.
Greer, J. (1990). Proteins 7, 317–334.
Johnson, M. S., Srinivasan, N., Sowdhamini, R., and Blundell, T. L. (1994). Crit. Rev. Biochem. Mol. Biol. 29, 1–68.
Jorgensen, W. L., Chandrasekhar, J., Madura, J. D., Impey, R. W., and Klein, M. L. (1983). J. Chem. Phys. 79, 926–935.
Kajihara, A., Komooka, H., Kamiya, K., and Umeyama, H. (1993). Protein Eng. 6, 615–620.
Katakura, S., Nagahara, T., Hara, T., Kunitada, S., and Iwamoto, M. (1995). Eur. J. Med. Chem. 30, 387–394.
Marquart, M., Walter, J., Deisenhofer, J., Bode, W., and Huber, R. (1983). Acta Crystallogr. B 39, 480–490.
Matsusue, T., Yoneda, T., Komooka, H., Kamiya, K., Shinomiya, K., and Umeyama, H. (n.d.). To be published.
Meyer, E., Cole, G., Radhakrishnan, R., and Epp, O. (1988). Acta Crystallogr. B 44, 26–38.
Miyata, T., Kuze, K., Matsusue, T., Komooka, H., Kamiya, K., Umeyama, H., Matsui, A., Kato, H., and Yoshioka, A. (1994). Brit. J. Haematol. 88, 156–165.
Nii, A., Morishita, H., Yamakawa, T., Matsusue, T., Hirose, J., Miura, T., Isaji, M., Horisawa, Y., Sugihara, K., Kanamori, T., and Umeyama, H. (1994). J. Biochem. 115, 1107–1112.
Padmanabhan, K., Padmanabhan, K. P., Tulinsky, A., Park, C. H., Bode, W., Huber, R., Blankenship, D. T., Cardin, A. D., and Kisiel, W. (1993). J. Mol. Biol. 232, 947–966.
Remington, S. J., Woodbury, R. G., Reynolds, R. A., Matthews, B. W., and Neurath, H. (1988). Biochemistry 27, 8097–8105.
Ripka, W., Brunck, T., Stanssens, P., LaRoche, Y., Lauwereys, M., Lambeir, A.-M., Lasters, I., DeMaeyer, M., Vlasuk, G., Levy, O., Miller, T., Webb, T., Tamura, S., and Pearson, D. (1995). Eur. J. Med. Chem. 30, 87s–100s.
Stubbs, M. T., Huber, R., and Bode, W. (1995). FEBS Lett. 375, 103–107.
Weiner, S. J., Kollman, P. A., Case, D. A., Singh, U. C., Ghio, C., Alagona, G., Profeta, Jr., S., and Weiner, P. (1984). J. Am. Chem. Soc. 106, 765–784.
Yoneda, S., and Umeyama, H. (1992). J. Chem. Phys. 97, 6730–6736.
Zheng, Y.-Z., Sakata, T., Matsusue, T., Umeyama, H., Kato, H., and Miyata, T. (1994). Blood Coagul. Fibrin. 5, 687–696.
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Yoneda, T., Komooka, H. & Umeyama, H. A Computer Modeling Study of the Interaction Between Tissue Factor Pathway Inhibitor and Blood Coagulation Factor Xa. J Protein Chem 16, 597–605 (1997). https://doi.org/10.1023/A:1026318823516
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DOI: https://doi.org/10.1023/A:1026318823516