We move now to consider a substantial simplification of representing micronuclear and intermediate genes. We shall use only the sequence of pointers in the order in which they appear in such a gene, obtaining in this way just a string of pointers. This yields the framework of legal strings, which is more abstract than the framework of MDS descriptors because different MDS descriptors may yield the same legal string. In this chapter we investigate the basic properties of the representation of the MDS structure by legal strings. In particular, we characterize those legals string that either correspond directly to realistic MDS descriptors or that can be signed so as to correspond to realistic MDS descriptors.
Unable to display preview. Download preview PDF.
Notes on References
- 16.Ehrenfeucht, A., Harju, T., Petre, I., and Rozenberg, G., Patterns of micronuclear genes in cliates. Lecture Notes in Comput. Sci. 2340 (2002) 279–289 Google Scholar
- 17.Ehrenfeucht, A., Harju, T., Petre, I., and Rozenberg, G., Characterizing the micronuclear gene patterns in ciliates. Theory of Comput. Syst. 35 (2002) 501–519Google Scholar
- 20.Ehrenfeucht, A., Petre, I., Prescott, D. M., and Rozenberg, G., String and graph reduction systems for gene assembly in ciliates. Math. Structures Comput. Sci. 12 (2001) 113–134Google Scholar
- 24.Hannenhalli, S., and Pevzner, P. A., Transforming cabbage into turnip (Polynomial algorithm for sorting signed permutations by reversals). In: Proceedings of the 27th Annual ACM Symposium on Theory of Computing (1995) pp. 178–189Google Scholar