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  • Liedvogel, Miriam, et al. (author)
  • Chemical magnetoreception: Bird cryptochrome 1a is excited by blue light and forms long-lived radical-pairs
  • 2007
  • In: PLoS ONE.
  • Journal article (peer-reviewed)abstract
    • Cryptochromes (Cry) have been suggested to form the basis of light-dependent magnetic compass orientation in birds. However, to function as magnetic compass sensors, the cryptochromes of migratory birds must possess a number of key biophysical characteristics. Most importantly, absorption of blue light must produce radical pairs with lifetimes longer than about a microsecond. Cryptochrome 1a (gwCry1a) and the photolyase-homology-region of Cry1 (gwCry1-PHR) from the migratory garden warbler were recombinantly expressed and purified from a baculovirus/Sf9 cell expression system. Transient absorption measurements show that these flavoproteins are indeed excited by light in the blue spectral range leading to the formation of radicals with millisecond lifetimes. These biophysical characteristics suggest that gwCry1a is ideally suited as a primary light-mediated, radical-pair-based magnetic compass receptor.
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  • Result 1-1 of 1
Type of publication
journal article (1)
Type of content
peer-reviewed (1)
Author/Editor
Simon, T (1)
Maeda, K (1)
Liedvogel, Miriam (1)
Schleicher, E. (1)
Mouritsen, H (1)
Henbest, K. (1)
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Hore, P.J. (1)
Timmel, C.R. (1)
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University
Lund University (1)
Language
English (1)
Research subject (UKÄ/SCB)
Natural sciences (1)
Year
2007 (1)

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