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Open data
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Basic information
Entry | Database: PDB / ID: 1kq2 | ||||||
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Title | Crystal Structure of an Hfq-RNA Complex | ||||||
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![]() | TRANSLATION/RNA / Hfq-RNA complex / single-stranded RNA / translational regulator / TRANSLATION-RNA COMPLEX | ||||||
Function / homology | ![]() regulation of translation, ncRNA-mediated / regulation of RNA stability / regulation of DNA-templated transcription / RNA binding / cytosol Similarity search - Function | ||||||
Biological species | ![]() ![]() | ||||||
Method | ![]() ![]() ![]() | ||||||
![]() | Schumacher, M.A. / Pearson, R.F. / Moller, T. / Valentin-Hansen, P. / Brennan, R.G. | ||||||
![]() | ![]() Title: Structures of the pleiotropic translational regulator Hfq and an Hfq-RNA complex: a bacterial Sm-like protein. Authors: Schumacher, M.A. / Pearson, R.F. / Moller, T. / Valentin-Hansen, P. / Brennan, R.G. | ||||||
History |
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Structure visualization
Structure viewer | Molecule: ![]() ![]() |
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Downloads & links
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Download
PDBx/mmCIF format | ![]() | 88.2 KB | Display | ![]() |
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PDB format | ![]() | 67.9 KB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
Others | ![]() |
-Validation report
Summary document | ![]() | 485 KB | Display | ![]() |
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Full document | ![]() | 496.6 KB | Display | |
Data in XML | ![]() | 16.4 KB | Display | |
Data in CIF | ![]() | 22.2 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 1kq1SC S: Starting model for refinement C: citing same article ( |
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Similar structure data |
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Links
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Assembly
Deposited unit | ![]()
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Unit cell |
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Details | Hfq is a functional hexamer and there is one hexamer bound to the 7-mer RNA site in the ASU |
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Components
#1: RNA chain | Mass: 2160.283 Da / Num. of mol.: 1 / Source method: obtained synthetically | ||
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#2: Protein | Mass: 8786.683 Da / Num. of mol.: 6 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() ![]() #3: Water | ChemComp-HOH / | |
-Experimental details
-Experiment
Experiment | Method: ![]() |
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Sample preparation
Crystal | Density Matthews: 2.17 Å3/Da / Density % sol: 43.28 % | |||||||||||||||||||||||||||||||||||||||||||||||||
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Crystal grow | Temperature: 298 K / Method: vapor diffusion, hanging drop / pH: 7.5 Details: PEG 550, MgCl2, Hepes, KCl, pH 7.5, VAPOR DIFFUSION, HANGING DROP, temperature 298K | |||||||||||||||||||||||||||||||||||||||||||||||||
Components of the solutions |
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Crystal grow | *PLUS Method: microdialysis | |||||||||||||||||||||||||||||||||||||||||||||||||
Components of the solutions | *PLUS
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-Data collection
Diffraction | Mean temperature: 298 K |
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Diffraction source | Source: ![]() ![]() ![]() |
Detector | Type: MARRESEARCH / Detector: IMAGE PLATE / Date: Jun 11, 2001 |
Radiation | Monochromator: graphite / Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray |
Radiation wavelength | Wavelength: 0.97 Å / Relative weight: 1 |
Reflection | Resolution: 2.71→40.38 Å / Num. all: 11950 / Num. obs: 11950 / % possible obs: 90.3 % / Observed criterion σ(F): 0 / Observed criterion σ(I): 0 / Biso Wilson estimate: 83.4 Å2 / Rsym value: 0.064 |
Reflection shell | Resolution: 2.71→2.89 Å / % possible all: 92.1 |
Reflection | *PLUS Num. measured all: 40717 / Rmerge(I) obs: 0.064 |
Reflection shell | *PLUS Lowest resolution: 2.8 Å / Rmerge(I) obs: 0.367 / Mean I/σ(I) obs: 2 |
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Processing
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Refinement | Method to determine structure: ![]() Starting model: one hexamer of 1KQ1 Resolution: 2.71→40.38 Å / Rfactor Rfree error: 0.011 / Data cutoff high absF: 2081750.71 / Data cutoff low absF: 0 / Isotropic thermal model: RESTRAINED / Cross valid method: THROUGHOUT / σ(F): 0 / Stereochemistry target values: engh and huber
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Solvent computation | Solvent model: FLAT MODEL / Bsol: 52.977 Å2 / ksol: 0.323089 e/Å3 | ||||||||||||||||||||||||||||||||||||
Displacement parameters | Biso mean: 64.5 Å2
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Refine analyze |
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Refinement step | Cycle: LAST / Resolution: 2.71→40.38 Å
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Refine LS restraints |
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LS refinement shell | Resolution: 2.71→2.88 Å / Rfactor Rfree error: 0.037 / Total num. of bins used: 6
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Xplor file |
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Refinement | *PLUS Lowest resolution: 40.4 Å / % reflection Rfree: 5 % / Rfactor obs: 0.204 / Rfactor Rfree: 0.266 / Rfactor Rwork: 0.204 | ||||||||||||||||||||||||||||||||||||
Solvent computation | *PLUS | ||||||||||||||||||||||||||||||||||||
Displacement parameters | *PLUS | ||||||||||||||||||||||||||||||||||||
Refine LS restraints | *PLUS
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LS refinement shell | *PLUS Rfactor Rfree: 0.377 / Rfactor Rwork: 0.315 |