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Calculating the Secrets of Life Contributions of the Mathematical Sciences to Molecular Biology (1995) / Chapter Skim
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Pages 171-172

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From page 171...
... Thus the winding number of a closed DNA on a protein surface is the number of times one of the backbone strands contacts the protein surface, or it is the number of times the strand is at maximal distance from it. In this case, it also follows from its definition that the helical repeat is the number of base pairs between successive contact points of one of the backbones or the number of base pairs between successive
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From page 172...
... The duplex DNA axis A lies on the surface. The backbone curve C will pass above and below the surface as it winds around A
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Key Terms

  • duplex dna
  • closed dna
  • base pair
  • dna axis
  • base pairs

  • vector field
  • backbone curve
  • helical repeat
  • protein surface
  • remains invariant

  • cross section
  • maximal distance


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