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- PDB-1kp3: Crystal Structure of E. coli Argininosuccinate Synthetase in Comp... -
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Open data
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Basic information
Entry | Database: PDB / ID: 1kp3 | |||||||||
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Title | Crystal Structure of E. coli Argininosuccinate Synthetase in Complex with ATP and Citrulline | |||||||||
![]() | argininosuccinate synthetase | |||||||||
![]() | LIGASE / N-Type ATP pyrophosphatase | |||||||||
Function / homology | ![]() argininosuccinate metabolic process / argininosuccinate synthase / argininosuccinate synthase activity / urea cycle / arginine biosynthetic process / protein homodimerization activity / ATP binding / identical protein binding / cytoplasm / cytosol Similarity search - Function | |||||||||
Biological species | ![]() ![]() | |||||||||
Method | ![]() ![]() | |||||||||
![]() | Lemke, C.T. / Howell, P.L. | |||||||||
![]() | ![]() Title: Substrate Induced Conformational Changes in Argininosuccinate Synthetase Authors: Lemke, C.T. / Howell, P.L. #1: ![]() Title: The 1.6 A Crystal Structure of E. coli Argininosuccinate Synthetase Suggests a Conformational Change during Catalysis Authors: Lemke, C.T. / Howell, P.L. | |||||||||
History |
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Structure visualization
Structure viewer | Molecule: ![]() ![]() |
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Downloads & links
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Download
PDBx/mmCIF format | ![]() | 106.4 KB | Display | ![]() |
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PDB format | ![]() | 79.8 KB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
Others | ![]() |
-Validation report
Summary document | ![]() | 880.7 KB | Display | ![]() |
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Full document | ![]() | 891.3 KB | Display | |
Data in XML | ![]() | 20.6 KB | Display | |
Data in CIF | ![]() | 29.3 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 1kp2C ![]() 1k92S 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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1 | ![]()
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Unit cell |
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Components on special symmetry positions |
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Details | The biological assembly is a tetramer. |
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Components
-Protein , 1 types, 1 molecules A
#1: Protein | Mass: 50967.262 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() ![]() |
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-Non-polymers , 5 types, 192 molecules ![](data/chem/img/PO4.gif)
![](data/chem/img/ATP.gif)
![](data/chem/img/CIR.gif)
![](data/chem/img/GAI.gif)
![](data/chem/img/HOH.gif)
![](data/chem/img/ATP.gif)
![](data/chem/img/CIR.gif)
![](data/chem/img/GAI.gif)
![](data/chem/img/HOH.gif)
#2: Chemical | ChemComp-PO4 / | ||||
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#3: Chemical | ChemComp-ATP / | ||||
#4: Chemical | #5: Chemical | #6: Water | ChemComp-HOH / | |
-Experimental details
-Experiment
Experiment | Method: ![]() |
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Sample preparation
Crystal | Density Matthews: 2.52 Å3/Da / Density % sol: 40 % | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Crystal grow | Temperature: 298 K / Method: vapor diffusion, hanging drop / pH: 6.5 Details: sodium/potassium phosphate, guanidine hydrochloride, MES, pH 6.5, VAPOR DIFFUSION, HANGING DROP, temperature 298K | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Crystal grow | *PLUS Details: used microseeding | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Components of the solutions | *PLUS
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-Data collection
Diffraction | Mean temperature: 100 K |
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Diffraction source | Source: ![]() |
Detector | Type: MARRESEARCH / Detector: IMAGE PLATE |
Radiation | Monochromator: GRAPHITE / Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray |
Radiation wavelength | Wavelength: 1.5418 Å / Relative weight: 1 |
Reflection | Resolution: 2→41 Å / Num. all: 35158 / Num. obs: 32696 / % possible obs: 93 % / Observed criterion σ(F): 0 / Observed criterion σ(I): 0 / Redundancy: 6.7 % / Biso Wilson estimate: 20.1 Å2 / Rmerge(I) obs: 0.082 / Net I/σ(I): 11.8 |
Reflection shell | Resolution: 1.99→2.06 Å / Rmerge(I) obs: 0.396 / % possible all: 71.9 |
Reflection | *PLUS Highest resolution: 1.99 Å / Lowest resolution: 41 Å / Num. obs: 34170 / % possible obs: 95.6 % / Num. measured all: 229900 / Rmerge(I) obs: 0.082 |
Reflection shell | *PLUS % possible obs: 71.9 % / Rmerge(I) obs: 0.396 |
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Processing
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Refinement | Method to determine structure: ![]() Starting model: PDB ENTRY 1K92 Resolution: 2→40.84 Å / Rfactor Rfree error: 0.004 / Data cutoff high absF: 452054.58 / Data cutoff low absF: 0 / Isotropic thermal model: RESTRAINED / Cross valid method: THROUGHOUT / σ(F): 0 / Stereochemistry target values: Engh & Huber
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Solvent computation | Solvent model: FLAT MODEL / Bsol: 57.3294 Å2 / ksol: 0.407088 e/Å3 | ||||||||||||||||||||||||||||||||||||
Displacement parameters | Biso mean: 35.4 Å2
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Refine analyze |
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Refinement step | Cycle: LAST / Resolution: 2→40.84 Å
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Refine LS restraints |
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LS refinement shell | Resolution: 2→2.13 Å / Rfactor Rfree error: 0.016 / Total num. of bins used: 6
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Xplor file |
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Refinement | *PLUS Highest resolution: 2 Å / Lowest resolution: 41 Å / % reflection Rfree: 10 % / Rfactor obs: 0.1916 / Rfactor Rfree: 0.2294 / Rfactor Rwork: 0.1916 | ||||||||||||||||||||||||||||||||||||
Solvent computation | *PLUS | ||||||||||||||||||||||||||||||||||||
Displacement parameters | *PLUS | ||||||||||||||||||||||||||||||||||||
Refine LS restraints | *PLUS
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LS refinement shell | *PLUS Rfactor Rfree: 0.332 / Rfactor Rwork: 0.283 |