J. Phys. IV France 7 (1997) C2-587-C2-591
Structural and Functional Characterization of Nitric Oxide ReductaseY. Shiro1, K. Tsukamoto1, E. Obayashi1, S. I. Adachi1, T. Iizuka1, M. Nomura2 and H. Shounc3
1 Biophysical Chemistry Laboratory, The Institute of Physical and Chemical Research (RIKEN), 2-1 Hirosawa, Wako, Saitama 351-01, Japan
2 Photon Factory, National Laboratory for High Energy Physics, 1-1 Oho, Tsukuba, Ibaraki 305, Japan
3 Institute of Applied Biochemistry, University of Tsukuba, Tsukuba, Ibaraki 305, Japan
The iron coordination structure of nitric oxide reductase (NOR) was investigated by iron K-edge EXAFS. The EXAFS of the ferrous form of NOR is similar to that of cytochrome P450cam (P450cam), but the EXAFS of its ferrous-CO forms exhibited a subtle but significant difference from those of P450cam. The structural basis of unique function of the NOR is discussed.
© EDP Sciences 1997