Generating single metalloprotein crystals in well-defined redox states: electrochemical control combined with infrared imaging of a NiFe hydrogenase crystal† †Electronic supplementary information (ESI) available: Crystal preparation; cyclic voltammogram in the experimental cell; position-dependent difference spectra; demonstration of control over all active sites; visible images of a crystal recorded periodically during measurements; time-dependent Nia-R formation. See DOI: 10.1039/c7cc02591b

نویسندگان

  • P A Ash
  • S B Carr
  • H A Reeve
  • A Skorupskaitė
  • J S Rowbotham
  • R Shutt
  • M D Frogley
  • R M Evans
  • G Cinque
  • F A Armstrong
  • K A Vincent
چکیده

We describe an approach to generating and verifying well-defined redox states in metalloprotein single crystals by combining electrochemical control with synchrotron infrared microspectroscopic imaging. For NiFe hydrogenase 1 from Escherichia coli we demonstrate fully reversible and uniform electrochemical reduction from the oxidised inactive to the fully reduced state, and temporally resolve steps during this reduction.

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Department of Chemistry, Research Institute University, Jinju 52828, South Korea. E-ma Tel: +82 55-772-1483 Education Center, Faculty of Engineering Shibazono, Narashino, Chiba 275-0023, Jap Department of Chemistry, Toho University 8510, Japan † Electronic supplementary information spectrum, SEM images, AFM images, U data. CCDC 1511571–1511577. For ESI an electronic format see DOI: 10.1039/c6sc...

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عنوان ژورنال:

دوره 53  شماره 

صفحات  -

تاریخ انتشار 2017