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- PDB-3a0r: Crystal structure of histidine kinase ThkA (TM1359) in complex wi... -
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Open data
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Basic information
Entry | Database: PDB / ID: 3a0r | ||||||
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Title | Crystal structure of histidine kinase ThkA (TM1359) in complex with response regulator protein TrrA (TM1360) | ||||||
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![]() | TRANSFERASE / four helix bundle / PAS fold / Kinase / Phosphoprotein / Two-component regulatory system | ||||||
Function / homology | ![]() phosphorelay response regulator activity / histidine kinase / phosphorelay sensor kinase activity / protein-DNA complex / transcription cis-regulatory region binding / nucleotide binding / regulation of DNA-templated transcription / metal ion binding / cytosol Similarity search - Function | ||||||
Biological species | ![]() ![]() | ||||||
Method | ![]() ![]() ![]() | ||||||
![]() | Yamada, S. / Sugimoto, H. / Kobayashi, M. / Ohno, A. / Nakamura, H. / Shiro, Y. | ||||||
![]() | ![]() Title: Structure of PAS-linked histidine kinase and the response regulator complex Authors: Yamada, S. / Sugimoto, H. / Kobayashi, M. / Ohno, A. / Nakamura, H. / Shiro, Y. #1: Journal: J.Mol.Biol. / Year: 2006 Title: The signaling pathway in histidine kinase and the response regulator complex revealed by X-ray crystallography and solution scattering Authors: Yamada, S. / Akiyama, S. / Sugimoto, H. / Kumita, H. / Ito, K. / Fujisawa, T. / Nakamura, H. / Shiro, Y. | ||||||
History |
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Remark 650 | HELIX Determination method: Author determined | ||||||
Remark 700 | SHEET Determination method: Author determined |
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Structure visualization
Structure viewer | Molecule: ![]() ![]() |
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Downloads & links
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Download
PDBx/mmCIF format | ![]() | 93.8 KB | Display | ![]() |
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PDB format | ![]() | 75.2 KB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
Others | ![]() |
-Validation report
Summary document | ![]() | 436.2 KB | Display | ![]() |
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Full document | ![]() | 455.2 KB | Display | |
Data in XML | ![]() | 18.2 KB | Display | |
Data in CIF | ![]() | 24.7 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 3a0sC ![]() 3a0tC ![]() 3a0uC ![]() 3a0vC ![]() 3a0wC ![]() 3a0xC ![]() 3a0yC ![]() 3a0zC ![]() 3a10C 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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Components
#1: Protein | Mass: 40999.023 Da / Num. of mol.: 1 / Fragment: PAS, catalytic domain, DHp domain Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() ![]() |
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#2: Protein | Mass: 13520.953 Da / Num. of mol.: 1 / Mutation: L89M Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() ![]() |
#3: Chemical | ChemComp-HG / |
-Experimental details
-Experiment
Experiment | Method: ![]() |
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Sample preparation
Crystal | Density Matthews: 4.93 Å3/Da / Density % sol: 75.04 % |
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Crystal grow | Temperature: 293 K / Method: vapor diffusion Details: 0.1M Bis-Tris-propane pH 7.0, 1.8M sodium acetate, vapor diffusion, temperature 293K |
-Data collection
Diffraction | Mean temperature: 100 K | |||||||||||||||
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Diffraction source | Source: ![]() ![]() ![]() | |||||||||||||||
Detector | Type: ADSC QUANTUM 210 / Detector: CCD / Date: Jun 4, 2006 | |||||||||||||||
Radiation | Protocol: MAD / Monochromatic (M) / Laue (L): M / Scattering type: x-ray | |||||||||||||||
Radiation wavelength |
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Reflection | Resolution: 3.8→50 Å / Num. obs: 11189 / % possible obs: 94.9 % / Observed criterion σ(I): -1 / Redundancy: 7.4 % / Biso Wilson estimate: 136.94 Å2 / Rsym value: 0.054 / Net I/σ(I): 22.6 | |||||||||||||||
Reflection shell | Resolution: 3.8→3.89 Å / Redundancy: 3.6 % / Mean I/σ(I) obs: 1.2 / Rsym value: 0.362 / % possible all: 85.1 |
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Processing
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Refinement | Method to determine structure: ![]() Stereochemistry target values: MAXIMUM LIKELIHOOD WITH PHASES Details: HYDROGENS HAVE BEEN ADDED IN THE RIDING POSITIONS. IN THE INITIAL MODEL BUILDING OF THIS ENTRY (3A0R), THE HIGH RESOLUTION STRUCTURES OF THE FOLLOWING FOUR STRUCTURAL PARTS WERE USED AS A ...Details: HYDROGENS HAVE BEEN ADDED IN THE RIDING POSITIONS. IN THE INITIAL MODEL BUILDING OF THIS ENTRY (3A0R), THE HIGH RESOLUTION STRUCTURES OF THE FOLLOWING FOUR STRUCTURAL PARTS WERE USED AS A STARTING MODEL: PAS DOMAIN (3A0S), DHP DOMAIN (2C2A), CA DOMAIN (3A0T) OF THKA , AND RESPONSE REGULATOR TRRA (3A0U). THESE MODELS WERE FITTED INTO THE 3.8 A RESOLUTION MAP THAT WAS EXPERIMENTALLY OBTAINED BY MAD PHASING, AND THEN INDIVIDUAL ATOMS WERE REFINED. AMONG THESE FOUR STRUCTURAL PARTS IN THE THKA/TRRA COMPLEX, TRRA SHOWS A VERY WEAK ELECTRON DENSITY. THE LOOPS BETA1-ALPHA1, BETA2-ALPHA2, ALPHA2-BETA3, ALPHA3-BETA4 OF TRRA ARE COMPLETELY DISORDERED. THE ALPHA4 AND STRANDS BETA1, BETA2, BETA3 OF TRRA SHOW AMBIGUOUS ELECTRON DENSITY. THE DENSITY FOR THE LOOP ALPHA6-ALPHA7 OF THE DHP DOMAIN IS NOT WELL-DEFINED. THE ATOMIC MODEL OF THESE REGIONS IS NOT ACCURATELY MODELED. THE ATP-LID REGION OF THE CA DOMAIN COULD NOT BE BUILT DUE TO DISORDER, BECAUSE IT DOES NOT HAVE STABLE CONFORMATION IN THE ABSENCE OF THE NUCLEOTIDE.
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Solvent computation | Ion probe radii: 0.8 Å / Shrinkage radii: 0.8 Å / VDW probe radii: 1.2 Å / Solvent model: MASK | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Displacement parameters | Biso max: 172.25 Å2 / Biso mean: 164.727 Å2 / Biso min: 121.79 Å2
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Refinement step | Cycle: LAST / Resolution: 3.8→20 Å
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Refine LS restraints |
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LS refinement shell | Resolution: 3.8→3.895 Å / Total num. of bins used: 20
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Refinement TLS params. | Method: refined / Refine-ID: X-RAY DIFFRACTION
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Refinement TLS group |
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