Learn More
A scheme is presented for mapping the connectivity of a potential magnetic field arising from an arbitrary distribution of discrete sources. The field lines interconnecting the sources are classified into N d domains, defining the field's connectivity. The number of domains is shown to depend on the number of sources and on the numbers of nulls and(More)
The 'knotting' problem in proteins is redefined in terms of the more general concept of loop penetration. Disulfide-containing proteins are represented as linear graphs, and it is proposed that proteins with nonplanar graph representations display loop penetrations in their three-dimensional structure. With this argument, it is shown that the occurrence of(More)
  • 1