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- PDB-2a68: Crystal structure of the T. thermophilus RNA polymerase holoenzym... -
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Open data
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Basic information
Entry | Database: PDB / ID: 2a68 | ||||||
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Title | Crystal structure of the T. thermophilus RNA polymerase holoenzyme in complex with antibiotic rifabutin | ||||||
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![]() | TRANSFERASE / RNA POLYMERASE HOLOENZYME / RIFABUTIN / ANTIBIOTIC / TRANSCRIPTION REGULATION / RIKEN Structural Genomics/Proteomics Initiative / RSGI / Structural Genomics | ||||||
Function / homology | ![]() sigma factor activity / DNA-directed RNA polymerase complex / DNA-templated transcription initiation / ribonucleoside binding / : / : / : / : / : / : ...sigma factor activity / DNA-directed RNA polymerase complex / DNA-templated transcription initiation / ribonucleoside binding / : / : / : / : / : / : / DNA-directed RNA polymerase / protein dimerization activity / magnesium ion binding / DNA binding / zinc ion binding / metal ion binding / cytoplasm Similarity search - Function | ||||||
Biological species | ![]() ![]() | ||||||
Method | ![]() ![]() ![]() | ||||||
![]() | Artsimovitch, I. / Vassylyeva, M.N. / Svetlov, D. / Svetlov, V. / Perederina, A. / Igarashi, N. / Matsugaki, N. / Wakatsuki, S. / Tahirov, T.H. / Vassylyev, D.G. / RIKEN Structural Genomics/Proteomics Initiative (RSGI) | ||||||
![]() | ![]() Title: Allosteric modulation of the RNA polymerase catalytic reaction is an essential component of transcription control by rifamycins. Authors: Artsimovitch, I. / Vassylyeva, M.N. / Svetlov, D. / Svetlov, V. / Perederina, A. / Igarashi, N. / Matsugaki, N. / Wakatsuki, S. / Tahirov, T.H. / Vassylyev, D.G. | ||||||
History |
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Structure visualization
Structure viewer | Molecule: ![]() ![]() |
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Downloads & links
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PDBx/mmCIF format | ![]() | 1.5 MB | Display | ![]() |
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PDB format | ![]() | 1.2 MB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
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-Validation report
Arichive directory | ![]() ![]() | HTTPS FTP |
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-Related structure data
Related structure data | ![]() 2a69C ![]() 2a6eC ![]() 1iw7S S: Starting model for refinement C: citing same article ( |
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Similar structure data | |
Other databases |
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Links
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Assembly
Deposited unit | ![]()
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2 | ![]()
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Unit cell |
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Components
-DNA-directed RNA polymerase ... , 3 types, 8 molecules ABKLCMDN
#1: Protein | Mass: 35056.164 Da / Num. of mol.: 4 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() References: UniProt: Q9Z9H6, UniProt: Q5SHR6*PLUS, DNA-directed RNA polymerase #2: Protein | Mass: 125436.539 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() #3: Protein | Mass: 170997.391 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
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-RNA polymerase ... , 2 types, 4 molecules EOFP
#4: Protein | Mass: 11521.221 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() References: GenBank: 20160394, UniProt: Q8RQE7*PLUS, DNA-directed RNA polymerase #5: Protein | Mass: 48568.008 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
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-Non-polymers , 4 types, 7413 molecules 






#6: Chemical | ChemComp-MG / #7: Chemical | #8: Chemical | ChemComp-ZN / #9: Water | ChemComp-HOH / | |
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-Experimental details
-Experiment
Experiment | Method: ![]() |
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Sample preparation
Crystal | Density Matthews: 5.2 Å3/Da / Density % sol: 75.2 % |
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Crystal grow | Temperature: 293 K / Method: vapor diffusion, sitting drop / pH: 6.5 Details: MG FORMATE, PEG400, SPERMIDINE, TRIS HCL, pH 6.50, VAPOR DIFFUSION, SITTING DROP, temperature 293K |
-Data collection
Diffraction | Mean temperature: 100 K | |||||||||
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Diffraction source | Source: ![]() ![]() ![]() | |||||||||
Detector | Type: ADSC QUANTUM 315 / Detector: CCD / Date: Sep 14, 2004 | |||||||||
Radiation | Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray | |||||||||
Radiation wavelength |
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Reflection | Resolution: 2.5→25 Å / Num. all: 560482 / Num. obs: 511160 / % possible obs: 91.2 % / Observed criterion σ(F): 0 / Observed criterion σ(I): 0 / Redundancy: 2.8 % / Rmerge(I) obs: 0.074 | |||||||||
Reflection shell | Resolution: 2.5→2.59 Å / Redundancy: 2 % / Rmerge(I) obs: 0.438 / Mean I/σ(I) obs: 2.3 / % possible all: 78.8 |
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Processing
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Refinement | Method to determine structure: ![]() Starting model: PDB ENTRY 1IW7 Resolution: 2.5→25 Å / σ(F): 0 / Stereochemistry target values: Engh & Huber Details: THIS IS A TWINNED STRUCTURE. THE TWINNING OPERATOR IS (H,K,L) -> (-H,-K,L) AND THE TWINNING FRACTION IS 0.5. THE R-FACTOR IS 0.225 AND THE R-FREE IS 0.257 WHEN THIS TWINNING OPERATOR IS USED.
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Displacement parameters | Biso mean: 68.1 Å2 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Refinement step | Cycle: LAST / Resolution: 2.5→25 Å
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Refine LS restraints |
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LS refinement shell | Resolution: 2.5→2.59 Å
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