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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 

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Magnetic field effects on B12 ethanolamine ammonia lyase: evidence for a radical mechanism.

A change in radical pair recombination rates is one of the few mechanisms by which a magnetic field can interact with a biological system. The kinetic parameter Vmax/Km (where Km is the Michaelis constant) for the coenzyme B12-dependent enzyme ethanolamine ammonia lyase was decreased 25 percent by a static magnetic field near 0.1 tesla (1000 gauss) with unlabeled ethanolamine and decreased 60 percent near 0.15 tesla with perdeuterated ethanolamine. This effect is likely caused by a magnetic field-induced change in intersystem crossing rates between the singlet and triplet spin states in the [cob(II)alamin:5'-deoxyadenosyl radical] spin-correlated radical pair.[1]

References

  1. Magnetic field effects on B12 ethanolamine ammonia lyase: evidence for a radical mechanism. Harkins, T.T., Grissom, C.B. Science (1994) [Pubmed]
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