The iron-sulfur environment in rubredoxin

B. Bunker, E. A. Stern

Research output: Contribution to journalArticlepeer-review

34 Scopus citations

Abstract

The atomic environment around the iron site in the nonheme iron sulfur protein rubredoxin was studied by the extended X-ray absorption fine structure (EXAFS) technique. Within experimental error, the Fe-S bonds in oxidized Clostridium pasteurianum rubredoxin are the same as in the analogue anion [Fe(S2-o-xyl)2]-synthesized by Holm. The average Fe-S bond length is 2.267 +/- 0.003A and the root mean square deviation about this average due to structural disorder is 0.032 + 0.013 - 0.032.

Original languageEnglish
Pages (from-to)253-264
Number of pages12
JournalBiophysical Journal
Volume19
Issue number3
DOIs
StatePublished - 1977
Externally publishedYes

Bibliographical note

Funding Information:
The constant advice of and informative discussions with Profs. Lyle Jensen and William W. Parson are gratefully acknowledged. We are most indebted to Professor R. Holm, who kindly supplied both his oxi- dized and reduced analogues of Rd. and to Dr. Walter Lovenberg, who kindly supplied the Rd samples. We are particularly indebted to Prof. Jon Herriott, who first pointed out the appropriateness of measuring Rd and who helped obtain the samples. Prof. Dale Sayers and Dr. Steve Heald helped in the measure- ments. The use of the superb facilities at the Stanford Synchrotron Radiation Project and the excellent support given by their personnel were essential for the success of the measurements. Research supported by the National Science Foundation Grants DMR73-02521 and cooperation with SLAC and the U.S. Energy Research and Development Administration. Receivedforpublication II March 1977.

Funding

The constant advice of and informative discussions with Profs. Lyle Jensen and William W. Parson are gratefully acknowledged. We are most indebted to Professor R. Holm, who kindly supplied both his oxi- dized and reduced analogues of Rd. and to Dr. Walter Lovenberg, who kindly supplied the Rd samples. We are particularly indebted to Prof. Jon Herriott, who first pointed out the appropriateness of measuring Rd and who helped obtain the samples. Prof. Dale Sayers and Dr. Steve Heald helped in the measure- ments. The use of the superb facilities at the Stanford Synchrotron Radiation Project and the excellent support given by their personnel were essential for the success of the measurements. Research supported by the National Science Foundation Grants DMR73-02521 and cooperation with SLAC and the U.S. Energy Research and Development Administration. Receivedforpublication II March 1977.

FundersFunder number
National Science FoundationDMR73-02521
SLAC National Accelerator Laboratory
Energy Research and Development Administration

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