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  Singlehydrogen bond donation from flavin N5 to proximal asparagine ensures FAD reduction in DNA photolyase

Wijaya, I. M. M., Domratcheva, T., Iwata, T., Getzoff, E. D., & Kandori, H. (2016). Singlehydrogen bond donation from flavin N5 to proximal asparagine ensures FAD reduction in DNA photolyase. Journal of the American Chemical Society, 138(13), 4368-4376. doi:10.1021/jacs.5b10533.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-002A-1BDC-5 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-002B-0048-0
Genre: Journal Article

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https://dx.doi.org/10.1021/jacs.5b10533 (Any fulltext)
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 Creators:
Wijaya, I M. Mahaputra, Author
Domratcheva, Tatiana1, Author              
Iwata, Tatsuya, Author
Getzoff, Elizabeth D., Author
Kandori, Hideki, Author
Affiliations:
1Department of Biomolecular Mechanisms, Max Planck Institute for Medical Research, Max Planck Society, ou_1497700              

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 Abstract: The spread of the absorbance of the stable FADH• radical (300–700 nm) allows CPD photolyase to highly efficiently form FADH–, making it functional for DNA repair. In this study, FTIR spectroscopy detected a strong hydrogen bond, from FAD N5–H to the carbonyl group of the Asn378 side chain, that is modulated by the redox state of FAD. The observed characteristic frequency shifts were reproduced in quantum-mechanical models of the flavin binding site, which were then employed to elucidate redox tuning governed by Asn378. We demonstrate that enhanced hydrogen bonding of the Asn378 side chain with the FADH• radical increases thermodynamic stabilization of the radical state, and further ensures kinetic stabilization and accumulation of the fully reduced FADH– state.

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Language(s): eng - English
 Dates: 2015-10-082016-03-222016-03-222016-04-06
 Publication Status: Published in print
 Pages: 9
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 Table of Contents: -
 Rev. Method: Peer
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Title: Journal of the American Chemical Society
  Other : J. Am. Chem. Soc.
  Abbreviation : JACS
Source Genre: Journal
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Publ. Info: Washington, DC : American Chemical Society
Pages: - Volume / Issue: 138 (13) Sequence Number: - Start / End Page: 4368 - 4376 Identifier: ISSN: 0002-7863
CoNE: https://pure.mpg.de/cone/journals/resource/954925376870