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| Item Type: | Article |
|---|---|
| Title: | Efficient determination of the accessible conformation space of multi-domain complexes based on EPR PELDOR data |
| Creators Name: | Kazemi, S. and Lopata, A. and Kniss, A. and Pluska, L. and Güntert, P. and Sommer, T. and Prisner, T.F. and Collauto, A. and Dötsch, V. |
| Abstract: | Many proteins can adopt multiple conformations which are important for their function. This is also true for proteins and domains that are covalently linked to each other. One important example is ubiquitin, which can form chains of different conformations depending on which of its lysine side chains is used to form an isopeptide bond with the C-terminus of another ubiquitin molecule. Similarly, ubiquitin gets covalently attached to active-site residues of E2 ubiquitin-conjugating enzymes. Due to weak interactions between ubiquitin and its interaction partners, these covalent complexes adopt multiple conformations. Understanding the function of these complexes requires the characterization of the entire accessible conformation space and its modulation by interaction partners. Long-range (1.8-10 nm) distance restraints obtained by EPR spectroscopy in the form of probability distributions are ideally suited for this task as not only the mean distance but also information about the conformation dynamics is encoded in the experimental data. Here we describe a computational method that we have developed based on well-established structure determination software using NMR restraints to calculate the accessible conformation space using PELDOR/DEER data. |
| Keywords: | PELDOR/DEER, Conformation Space, Structural Modelling, K48-Linked Ubiquitin Chains, E2 Enzymes |
| Source: | Journal of Biomolecular NMR |
| ISSN: | 0925-2738 |
| Publisher: | Springer |
| Volume: | 77 |
| Number: | 5-6 |
| Page Range: | 261-269 |
| Date: | December 2023 |
| Official Publication: | https://doi.org/10.1007/s10858-023-00426-3 |
| PubMed: | View item in PubMed |
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