5D 13C-detected experiments for backbone assignment of unstructured proteins with a very low signal dispersion

0367828 - MBÚ 2012 RIV NL eng J - Journal Article
Nováček, J. - Zawadzka-Kazimierczuk, A. - Papoušková, V. - Žídek, L. - Šanderová, Hana - Krásný, Libor - Kozminski, W. - Sklenář, V.
5D 13C-detected experiments for backbone assignment of unstructured proteins with a very low signal dispersion.
Journal of Biomolecular NMR. Roč. 50, č. 1 (2011), s. 1-11. ISSN 0925-2738. E-ISSN 1573-5001
R&D Projects: GA ČR GA204/09/0583
Institutional research plan: CEZ:AV0Z50200510
Keywords : Intrinsically disordered proteins * Non-uniform sampling * Longitudinal relaxation optimization
Subject RIV: EE - Microbiology, Virology
Impact factor: 3.612, year: 2011

Two novel 5D NMR experiments (CACONCACO, NCOCANCO) for backbone assignment of disordered proteins are presented. The pulse sequences exploit relaxation properties of the unstructured proteins and combine the advantages of 13C-direct detection, non-uniform sampling, and longitudinal relaxation optimization to maximize the achievable resolution and minimize the experimental time. The pulse sequences were successfully tested on the sample of partially disordered delta subunit from RNA polymerase from Bacillus subtilis. The unstructured part of this 20 kDa protein consists of 81 amino acids with frequent sequential repeats. A collection of 0.0003% of the data needed for a conventional experiment with linear sampling was sufficient to perform an unambiguous assignment of the disordered part of the protein from a single 5D spectrum
Permanent Link: http://hdl.handle.net/11104/0202372