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Open data
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Basic information
Entry | Database: PDB / ID: 1rxu | ||||||
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Title | E. coli uridine phosphorylase: thymidine phosphate complex | ||||||
![]() | Uridine phosphorylase | ||||||
![]() | TRANSFERASE / pentosyltransferase / uridine phosphorylase / thymidine / induced fit / specificity / potassium | ||||||
Function / homology | ![]() UMP catabolic process / uridine catabolic process / deoxyuridine phosphorylase activity / uridine phosphorylase / uridine phosphorylase activity / UMP salvage / potassium ion binding / DNA damage response / protein-containing complex / ATP binding ...UMP catabolic process / uridine catabolic process / deoxyuridine phosphorylase activity / uridine phosphorylase / uridine phosphorylase activity / UMP salvage / potassium ion binding / DNA damage response / protein-containing complex / ATP binding / identical protein binding / cytosol Similarity search - Function | ||||||
Biological species | ![]() ![]() | ||||||
Method | ![]() ![]() | ||||||
![]() | Caradoc-Davies, T.T. / Cutfield, S.M. / Lamont, I.L. / Cutfield, J.F. | ||||||
![]() | ![]() Title: Crystal structures of escherichia coli uridine phosphorylase in two native and three complexed forms reveal basis of substrate specificity, induced conformational changes and influence of potassium Authors: Caradoc-Davies, T.T. / Cutfield, S.M. / Lamont, I.L. / Cutfield, J.F. | ||||||
History |
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Structure visualization
Structure viewer | Molecule: ![]() ![]() |
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Downloads & links
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Download
PDBx/mmCIF format | ![]() | 859.6 KB | Display | ![]() |
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PDB format | ![]() | 709.9 KB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
Others | ![]() |
-Validation report
Summary document | ![]() | 623.7 KB | Display | ![]() |
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Full document | ![]() | 716.8 KB | Display | |
Data in XML | ![]() | 176.2 KB | Display | |
Data in CIF | ![]() | 217.9 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related 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: SER / Beg label comp-ID: SER / End auth comp-ID: LEU / End label comp-ID: LEU / Refine code: 1 / Auth seq-ID: 4 - 253 / Label seq-ID: 4 - 253
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Components
#1: Protein | Mass: 27189.055 Da / Num. of mol.: 18 Source method: isolated from a genetically manipulated source Details: This structure consists of eighteen monomers, all of which are in the closed conformation containing substrate (thymidine and phosphate). Due to the large size of the model it was refined ...Details: This structure consists of eighteen monomers, all of which are in the closed conformation containing substrate (thymidine and phosphate). Due to the large size of the model it was refined using a template model, and shell scripts were written to create the 18 monomer model from this input model using the ncs operators relating each monomer to the template. The 18 monomer model was then refined using refmac5 and ncs restraints were applied as a tight positional (0.05A) and loose thermal (5.0A3) restraints. These restraints, along with tls restraints where each monomer was treated as a separate tls domain, were applied with each monomer being restrained against the template model. Source: (gene. exp.) ![]() ![]() ![]() ![]() #2: Chemical | ChemComp-PO4 / #3: Chemical | ChemComp-K / #4: Chemical | ChemComp-THM / #5: Water | ChemComp-HOH / | |
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-Experimental details
-Experiment
Experiment | Method: ![]() |
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Sample preparation
Crystal | Density Matthews: 2.2 Å3/Da / Density % sol: 43.54 % |
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Crystal grow | Temperature: 289 K / Method: batch method under oil / pH: 7.5 Details: TRIS HCL, PEG4000, POTASSIUM ACETATE, THYMIDINE, POTASSIUM PHOSPHATE, pH 7.50, BATCH METHOD UNDER OIL, temperature 289K |
-Data collection
Diffraction | Mean temperature: 115 K |
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Diffraction source | Source: ![]() |
Detector | Type: MARRESEARCH / Detector: IMAGE PLATE / Date: Aug 6, 2002 / Details: OSMIC |
Radiation | Monochromator: NI FILTER / Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray |
Radiation wavelength | Wavelength: 1.5418 Å / Relative weight: 1 |
Reflection | Resolution: 3.1→41.89 Å / Num. all: 76410 / Num. obs: 76410 / % possible obs: 98.2 % / Observed criterion σ(F): 0 / Observed criterion σ(I): 0 / Redundancy: 2.6 % / Biso Wilson estimate: 61.398 Å2 / Rmerge(I) obs: 0.158 / Net I/σ(I): 4.7 |
Reflection shell | Resolution: 3.1→3.26 Å / Redundancy: 2.5 % / Rmerge(I) obs: 0.529 / Mean I/σ(I) obs: 1.4 / Num. unique all: 5116 / % possible all: 97 |
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Processing
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Refinement | Method to determine structure: ![]() Starting model: A SINGLE HEXAMER (CHAINS ABCDEF) OF THE 5-FLUOROURACIL PHOSPHATE UP COMPLEX MODEL. Resolution: 3.1→25 Å / Cor.coef. Fo:Fc: 0.902 / Cor.coef. Fo:Fc free: 0.887 / SU B: 22.732 / SU ML: 0.397 / TLS residual ADP flag: LIKELY RESIDUAL / Isotropic thermal model: ISOTROPIC (TLS REFINEMENT) / Cross valid method: THROUGHOUT / σ(F): 0 / σ(I): 0 / ESU R Free: 0.51 / Stereochemistry target values: MAXIMUM LIKELIHOOD Details: TLS AND RESTRAINED REFINEMENT WAS CARRIED OUT USING REFMAC5.ALL 18 MONOMERS WERE REFINED USING NCS RESTRAINTS (TIGHT POSITIONAL (0.05A) AND LOOSE THERMAL (5.0A3) RESTRAINTS), AND EACH ...Details: TLS AND RESTRAINED REFINEMENT WAS CARRIED OUT USING REFMAC5.ALL 18 MONOMERS WERE REFINED USING NCS RESTRAINTS (TIGHT POSITIONAL (0.05A) AND LOOSE THERMAL (5.0A3) RESTRAINTS), AND EACH MONOMER WAS A SINGLE TLS DOMAIN.
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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: BABINET MODEL WITH MASK | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Displacement parameters | Biso mean: 26.192 Å2
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Refine analyze |
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Refinement step | Cycle: LAST / Resolution: 3.1→25 Å
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Refine LS restraints |
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Refine LS restraints NCS | Ens-ID: 1 / Number: 1939 / Refine-ID: X-RAY DIFFRACTION
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