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- PDB-2ihu: Carboxyethylarginine synthase from Streptomyces clavuligerus: put... -
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Open data
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Basic information
Entry | Database: PDB / ID: 2ihu | ||||||
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Title | Carboxyethylarginine synthase from Streptomyces clavuligerus: putative reaction intermediate complex | ||||||
![]() | Carboxyethylarginine synthase | ||||||
![]() | TRANSFERASE / Thiamin diphosphate complex | ||||||
Function / homology | ![]() N2-(2-carboxyethyl)arginine synthase / N2-(2-carboxyethyl)arginine synthase activity / acetolactate synthase complex / acetolactate synthase activity / valine biosynthetic process / isoleucine biosynthetic process / thiamine pyrophosphate binding / flavin adenine dinucleotide binding / magnesium ion binding Similarity search - Function | ||||||
Biological species | ![]() | ||||||
Method | ![]() ![]() ![]() | ||||||
![]() | Caines, M.E. / Schofield, C.J. | ||||||
![]() | ![]() Title: Structural and mechanistic studies on N(2)-(2-carboxyethyl)arginine synthase. Authors: Caines, M.E. / Sorensen, J.L. / Schofield, C.J. | ||||||
History |
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Structure visualization
Structure viewer | Molecule: ![]() ![]() |
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Downloads & links
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Download
PDBx/mmCIF format | ![]() | 454 KB | Display | ![]() |
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PDB format | ![]() | 365.1 KB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
Others | ![]() |
-Validation report
Summary document | ![]() | 489.8 KB | Display | ![]() |
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Full document | ![]() | 499 KB | Display | |
Data in XML | ![]() | 85.3 KB | Display | |
Data in CIF | ![]() | 128.5 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 2ihtC ![]() 2ihvC ![]() 1upaS 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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Noncrystallographic symmetry (NCS) | NCS domain:
NCS domain segments: Component-ID: 1 / Ens-ID: 1 / Beg auth comp-ID: LYS / Beg label comp-ID: LYS / Refine code: 4
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Components
-Protein , 1 types, 4 molecules ABCD
#1: Protein | Mass: 60964.828 Da / Num. of mol.: 4 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() References: UniProt: Q9LCV9, N2-(2-carboxyethyl)arginine synthase |
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-Non-polymers , 7 types, 1423 molecules ![](data/chem/img/MG.gif)
![](data/chem/img/K.gif)
![](data/chem/img/TP9.gif)
![](data/chem/img/TAR.gif)
![](data/chem/img/GOL.gif)
![](data/chem/img/TP8.gif)
![](data/chem/img/HOH.gif)
![](data/chem/img/K.gif)
![](data/chem/img/TP9.gif)
![](data/chem/img/TAR.gif)
![](data/chem/img/GOL.gif)
![](data/chem/img/TP8.gif)
![](data/chem/img/HOH.gif)
#2: Chemical | ChemComp-MG / #3: Chemical | ChemComp-K / #4: Chemical | ChemComp-TP9 / ( #5: Chemical | #6: Chemical | ChemComp-GOL / | #7: Chemical | ChemComp-TP8 / | #8: Water | ChemComp-HOH / | |
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-Experimental details
-Experiment
Experiment | Method: ![]() |
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Sample preparation
Crystal | Density Matthews: 3.09 Å3/Da / Density % sol: 60.21 % |
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Crystal grow | Temperature: 290 K / Method: vapor diffusion, hanging drop / pH: 7.4 Details: 1.6 M (NH4)2SO4, 0.1 M HEPES pH 7.4, 10 mg/mL protein with 3-fold excess of ThDP, VAPOR DIFFUSION, HANGING DROP, temperature 290K |
-Data collection
Diffraction | Mean temperature: 100 K |
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Diffraction source | Source: ![]() ![]() ![]() |
Detector | Type: MAR CCD 165 mm / Detector: CCD / Date: Dec 19, 2004 |
Radiation | Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray |
Radiation wavelength | Wavelength: 0.813 Å / Relative weight: 1 |
Reflection | Resolution: 2.05→28.133 Å / Num. all: 189093 / Num. obs: 183609 / % possible obs: 97.1 % / Observed criterion σ(F): 0 / Observed criterion σ(I): 0 / Redundancy: 3.7 % / Biso Wilson estimate: 20.17 Å2 / Rmerge(I) obs: 0.079 / Rsym value: 0.079 / Net I/σ(I): 7.9 |
Reflection shell | Resolution: 2.05→2.16 Å / Redundancy: 3.3 % / Rmerge(I) obs: 0.305 / Mean I/σ(I) obs: 2.4 / Rsym value: 0.305 / % possible all: 88.9 |
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Processing
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Refinement | Method to determine structure: ![]() Starting model: PDB ENTRY 1UPA Resolution: 2.05→28.13 Å / Cor.coef. Fo:Fc: 0.955 / Cor.coef. Fo:Fc free: 0.939 / SU B: 3.457 / SU ML: 0.094 / Cross valid method: THROUGHOUT / σ(F): 0 / ESU R: 0.152 / ESU R Free: 0.136 / Stereochemistry target values: MAXIMUM LIKELIHOOD Details: This data was collected on a crystal of CEAS soaked with 3 mM DL-glyceraldehyde-3-phosphate, in a solution containing 2 M dipotassium tartrate. The electron density in the active sites of ...Details: This data was collected on a crystal of CEAS soaked with 3 mM DL-glyceraldehyde-3-phosphate, in a solution containing 2 M dipotassium tartrate. The electron density in the active sites of subunits A and D could be interpreted as either tartrate or glyceraldehyde-3-phosphate, or as a mixture. The model has been built conservatively with tartrate bound. The electron density in the active site of subunit C appeared consistent with the formation of a covalently bound species and a number of mechanistically plausible ligands were modelled. Of the potential structures tested, the enol(ate)-ThDP species was judged most consistent with the experimental data, however other possibilities exist and the model should be treated with due caution.
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Solvent computation | Ion probe radii: 0.8 Å / Shrinkage radii: 0.8 Å / VDW probe radii: 1.4 Å / Solvent model: MASK | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Displacement parameters | Biso mean: 20.712 Å2
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Refinement step | Cycle: LAST / Resolution: 2.05→28.13 Å
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Refine LS restraints |
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Refine LS restraints NCS | Ens-ID: 1 / Number: 4033 / Refine-ID: X-RAY DIFFRACTION
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LS refinement shell | Resolution: 2.05→2.103 Å / Total num. of bins used: 20
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