TY - JOUR
T1 - Observation of the Fe4+=O stretching Raman band for cytochrome oxidase compound B at ambient temperature
AU - Ogura, T.
AU - Takahashi, S.
AU - Shinzawa-Itoh, K.
AU - Yoshikawa, S.
AU - Kitagawa, T.
N1 - Copyright:
Copyright 2007 Elsevier B.V., All rights reserved.
PY - 1990
Y1 - 1990
N2 - Resonance Raman and visible absorption spectra were simultaneously observed for cytochrome oxidase reaction intermediates at 5°C by using the artificial cardiovascular system (Ogura, T., Yoshikawa, S., and Kitagawa, T. (1989) Biochemistry 28, 8022-8027) and a device for Raman/absorption simultaneous measurements (Ogura, T., and Kitagawa, T. (1988) Rev. Sci. Instrum. 59, 1316-1320). The Fe4+=O stretching (ν(FeO)) Raman band was observed at 788 cm-1 for compound B for the first time. This band showed the 16O/18O isotopic frequency shift (Δν(FeO)) by 40 cm-1, in agreement with that for horseradish peroxidase compound II (ν(FeO) = 787 cm-1 and Δν(FeO) = 34 cm-a1). In the time region when the Fe(II)-O2 stretching band for compound A and the ν(FeO) band for compound B were coexistent, a Raman band assignable to the Fe3+-O-O-Cu2+ linkage was not recognized.
AB - Resonance Raman and visible absorption spectra were simultaneously observed for cytochrome oxidase reaction intermediates at 5°C by using the artificial cardiovascular system (Ogura, T., Yoshikawa, S., and Kitagawa, T. (1989) Biochemistry 28, 8022-8027) and a device for Raman/absorption simultaneous measurements (Ogura, T., and Kitagawa, T. (1988) Rev. Sci. Instrum. 59, 1316-1320). The Fe4+=O stretching (ν(FeO)) Raman band was observed at 788 cm-1 for compound B for the first time. This band showed the 16O/18O isotopic frequency shift (Δν(FeO)) by 40 cm-1, in agreement with that for horseradish peroxidase compound II (ν(FeO) = 787 cm-1 and Δν(FeO) = 34 cm-a1). In the time region when the Fe(II)-O2 stretching band for compound A and the ν(FeO) band for compound B were coexistent, a Raman band assignable to the Fe3+-O-O-Cu2+ linkage was not recognized.
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M3 - Article
C2 - 2168389
AN - SCOPUS:0025193389
VL - 265
SP - 14721
EP - 14723
JO - Journal of Biological Chemistry
JF - Journal of Biological Chemistry
SN - 0021-9258
IS - 25
ER -