L-edge X-ray absorption spectroscopy of pyrococcus furiosus rubredoxin

Journal Article · Wed May 20 04:00:00 EDT 1992 · Journal of the American Chemical Society

DOI:https://doi.org/10.1021/ja00037a073· OSTI ID:232218

George, S J ^[1]; Elp, J van; Chen, J ^[2]

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1. Univ. of California, Davis, CA (United States)
2. Lawrence Berkeley Lab., CA (United States); and others

In this communication the authors present new experiments and theoretical simulations, using iron L-edge X-ray absorption spectroscopy, to study the metalloprotein Pyrococcus furiosus rubredoxin. the 3d transition metal L-edges are found between 400 and 1100 eV, in the soft X-ray region. Synchrotron radiation beam lines producing the high photon flux and high-energy resolution necessary to observe and resolve 3d transition metal L-edge spectra have only become available in the last few years. L-edge spectra are interesting not only because of the 3-4-fold-higher energy resolution (vs K-edges) but also for the sensitivity to spin state, oxidation state, and ligand field offered by p{r_arrow}d transitions. In addition, the X-ray magnetic circular dichroism (XMCD) of transition metal L-edges is predicted to be strong, and experiments have confirmed these predictions. 21 refs., 1 fig.

• Sponsoring Organization: USDOE
• OSTI ID: 232218
• Journal Information: Journal of the American Chemical Society, Journal Name: Journal of the American Chemical Society Journal Issue: 11 Vol. 114; ISSN JACSAT; ISSN 0002-7863
• Country of Publication: United States
• Language: English

Related Subjects

40 CHEMISTRY
55 BIOLOGY AND MEDICINE
BASIC STUDIES
ABSORPTION SPECTROSCOPY
MAGNETIC CIRCULAR DICHROISM
MATHEMATICAL MODELS
RUBREDOXIN
SYNCHROTRON RADIATION
X-RAY SPECTROSCOPY