The detection and annotation of cis-regulatory sequences is a difficult problem. There is currently no generally applicable experimental procedure or computational algorithm to identify the non-coding regions of the genome that serve to activate gene expression in a given cell type. The only indicator of cis-regulatory function is the conservation of a sequence in other genomes. Regions can then be tested one-by-one in transgenic assays but this is time-consuming in vertebrates. Only a limited number of these already validated cis-regulatory sequences have been curated in biological databases. One of the main advantages of the model organism Ciona intestinalis is that cis-regulatory tests can be conducted very easily and the result is observable after one day while the animal follows the chordate body plan. However, a sequence found to be active in this organism can currently not be mapped to genomes of other animals.
| Identifer | oai:union.ndltd.org:CCSD/oai:tel.archives-ouvertes.fr:tel-00413501 |
| Date | 15 July 2009 |
| Creators | Häussler, Maximilian |
| Publisher | Université Paris Sud - Paris XI |
| Source Sets | CCSD theses-EN-ligne, France |
| Language | English |
| Detected Language | English |
| Type | PhD thesis |
Page generated in 0.0027 seconds