2GZU
High-resolution structure determination of the CylR2 homodimer using intermonomer distances from paramagnetic relaxation enhancement and NMR dipolar couplings
Summary for 2GZU
| Entry DOI | 10.2210/pdb2gzu/pdb |
| Related | 1UTX |
| NMR Information | BMRB: 6317 |
| Descriptor | cytolysin regulator 2 (1 entity in total) |
| Functional Keywords | helix-loop-helix dna binding protein, transcription regulator |
| Biological source | Enterococcus faecalis |
| Total number of polymer chains | 2 |
| Total formula weight | 15449.98 |
| Authors | Rumpel, S.,Becker, S.,Zweckstetter, M. (deposition date: 2006-05-12, release date: 2007-04-24, Last modification date: 2024-05-29) |
| Primary citation | Rumpel, S.,Becker, S.,Zweckstetter, M. High-resolution structure determination of the CylR2 homodimer using paramagnetic relaxation enhancement and structure-based prediction of molecular alignment J.Biomol.Nmr, 40:1-13, 2008 Cited by PubMed Abstract: Structure determination of homooligomeric proteins by NMR spectroscopy is difficult due to the lack of chemical shift perturbation data, which is very effective in restricting the binding interface in heterooligomeric systems, and the difficulty of obtaining a sufficient number of intermonomer distance restraints. Here we solved the high-resolution solution structure of the 15.4 kDa homodimer CylR2, the regulator of cytolysin production from Enterococcus faecalis, which deviates by 1.1 angstroms from the previously determined X-ray structure. We studied the influence of different experimental information such as long-range distances derived from paramagnetic relaxation enhancement, residual dipolar couplings, symmetry restraints and intermonomer Nuclear Overhauser Effect restraints on the accuracy of the derived structure. In addition, we show that it is useful to combine experimental information with methods of ab initio docking when the available experimental data are not sufficient to obtain convergence to the correct homodimeric structure. In particular, intermonomer distances may not be required when residual dipolar couplings are compared to values predicted on the basis of the charge distribution and the shape of ab initio docking solutions. PubMed: 18026911DOI: 10.1007/s10858-007-9204-4 PDB entries with the same primary citation |
| Experimental method | SOLUTION NMR |
Structure validation
Download full validation report
