Effective and unaffected: An [NiFe] hydrogenase was immobilized on Au electrodes. Surface-enhanced infrared absorption (SEIRA) spectroscopy monitored structural changes of the active site as a function of the applied potential. The redox titration of the enzyme gave a formal potential (E1/2) similar to that obtained for the enzyme in solution, demonstrating that the structure of the active site is not affected by the immobilization.
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Millo et al. (2011) studied this question.
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