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Biophysical Journal 5: 275-287 (1965)
© 1965 the Biophysical Society

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Intrinsic Birefringence of Multiple-Coiled DNA, Theory and Applications

Marcos F. Maestre and Rein Kilkson

ABSTRACT

The intrinsic birefringence of multiple-coiled DNA is computed in terms of an equally dense array of parallel DNA molecules. The birefringence for n times-coiled DNA molecules is given by [Formula: see text] where ßo = 0, ßi = tan-1 (pi/2{pi}ri), pi = period of the ith helix coil and ri = radius of ith helix coil. The formula is applied to two cases of helically coiled DNA in biological material and found to agree quantitatively with experimental results.






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Copyright © 1965 by the Biophysical Society.