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X-ray damage in protein-metal hybrid structures: a photoemission electron microscopy study

X-ray damage in protein-metal hybrid structures: a photoemission electron microscopy study

Journal of Physical Chemistry. B 114(24): 8284-8289

Bacterial surface layer protein sheets (S layer) coated with an ultrathin cobalt or silver film were studied by means of laterally resolved near-edge X-ray absorption fine structure spectroscopy performed by photoemission electron microscopy. Comparison with results obtained on pristine S layers allowed us to characterize both chemical interaction and X-ray damage in these protein-metal hybrid systems. In particular, we found that besides direct damage upon exposure to X-ray radiation the biomolecules experience additional contribution of the deposited metals, by low-energy electron generation in the metal particles.

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Accession: 056966412

Download citation: RISBibTeXText

PMID: 20518510

DOI: 10.1021/jp1040585

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