We propose to examine the two Ni centers of carbon monoxide dehydrogenase enzyme from Clostridium thermoacticum independently using Ni and Co K-edge EXAFS. This study is made possible by the recent discovery that treatment of the enzyme with 1,10-phenanthroline removes the Ni from only one of the two NiFe centers. Previous EXAFS work on this enzyme has not led to a unique structural determination of the NiFe clusters because the two Ni sites are not spectroscopically distinguishable. We should be able to determine the structure of one site using Ni K-edge EXAFS of the phenanthroline treated enzyme, and the structure of the other site using Co K-edge EXAFS of the Co substituted phenanthroline treated enzyme.

Agency
National Institute of Health (NIH)
Institute
National Center for Research Resources (NCRR)
Type
Biotechnology Resource Grants (P41)
Project #
3P41RR001209-23S1
Application #
6658767
Study Section
Project Start
2002-03-01
Project End
2003-02-28
Budget Start
Budget End
Support Year
23
Fiscal Year
2002
Total Cost
$143,176
Indirect Cost
Name
Stanford University
Department
Type
DUNS #
800771545
City
Stanford
State
CA
Country
United States
Zip Code
94305
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