An infinitesimal fraction of the practically infinite sequence space has achieved enormous functional diversity of proteins during evolution. Intrinsically disordered proteins (IDPs) which lack a fully defined three-dimensional structure are the most likely precursors to today's proteins because of their flexible conformation and functional diversity. But how have these proteins evolved into often rigid and highly specialized protein structures? This evolutionary trajectory has the greatest support in the theory of induced fold whereby the development of the structure was mediated by the interaction and coevolution of primordial unstructured proteins with different cofactors or RNA molecules. Although some random sequences from the sequence space which is not used by nature are also able to form folded proteins the more suitable candidates for evolution of structure and function appear to be random sequences with a high content of disordered which have low aggregation propensity. The selected random protein sequences with high disorder content have been structurally characterized in this work for their further use in evolutionary studies. Three artificial proteins were selected from a random-sequence library based on previous study in our laboratory. In the present work they were purified and...
| Identifer | oai:union.ndltd.org:nusl.cz/oai:invenio.nusl.cz:379356 |
| Date | January 2018 |
| Creators | Ptáčková, Barbora |
| Contributors | Hlouchová, Klára, Šilhán, Jan |
| Source Sets | Czech ETDs |
| Language | Czech |
| Detected Language | English |
| Type | info:eu-repo/semantics/masterThesis |
| Rights | info:eu-repo/semantics/restrictedAccess |
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