Surface enhanced vibrational spectroscopic evidence for an alternative DNA-independent redox activation of endonuclease III.

Chem Commun (Camb)

Instituto de Tecnologia Quimica e Biologica (ITQB), Universidade Nova de Lisboa, Av. da Republica (EAN), 2780-157 Oeiras, Portugal.

Published: February 2015

Surface enhanced vibrational spectro-electrochemistry of endonuclease III provides direct evidence that the [4Fe-4S] cluster is responsible for the enzyme redox activity, and that this process is not exclusively DNA-mediated, as currently proposed. We report the first surface enhanced resonance Raman spectrum of a [4Fe-4S](2+) cluster containing enzyme.

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http://dx.doi.org/10.1039/c4cc09498kDOI Listing

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