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Yorodumi- PDB-1qk3: TOXOPLASMA GONDII HYPOXANTHINE-GUANINE PHOSPHORIBOSYLTRANSFERASE ... -
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Open data
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Basic information
| Entry | Database: PDB / ID: 1qk3 | ||||||
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| Title | TOXOPLASMA GONDII HYPOXANTHINE-GUANINE PHOSPHORIBOSYLTRANSFERASE GMP COMPLEX | ||||||
Components | HYPOXANTHINE-GUANINE PHOSPHORIBOSYLTRANSFERASE | ||||||
Keywords | TRANSFERASE / GLYCOSYLTRANSFERASE / PURINE SALVAGE | ||||||
| Function / homology | Function and homology informationxanthine phosphoribosyltransferase / XMP salvage / xanthine phosphoribosyltransferase activity / hypoxanthine phosphoribosyltransferase / guanine phosphoribosyltransferase activity / guanine salvage / hypoxanthine metabolic process / hypoxanthine phosphoribosyltransferase activity / GMP salvage / IMP salvage ...xanthine phosphoribosyltransferase / XMP salvage / xanthine phosphoribosyltransferase activity / hypoxanthine phosphoribosyltransferase / guanine phosphoribosyltransferase activity / guanine salvage / hypoxanthine metabolic process / hypoxanthine phosphoribosyltransferase activity / GMP salvage / IMP salvage / purine ribonucleoside salvage / nucleotide binding / magnesium ion binding / cytosol Similarity search - Function | ||||||
| Biological species | ![]() | ||||||
| Method | X-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 1.65 Å | ||||||
Authors | Heroux, A. / White, E.L. / Ross, L.J. / Borhani, D.W. | ||||||
Citation | Journal: Biochemistry / Year: 1999Title: Crystal Structures of the Toxoplasma Gondii Hypoxanthine-Guanine Phosphoribosyltransferase Gmp and -Imp Complexes: Comparison of Purine Binding Interactions with the Xmp Complex Authors: Heroux, A. / White, E.L. / Ross, L.J. / Borhani, D.W. #1: Journal: Biochemistry / Year: 1999Title: Crystal Structure of Toxoplasma Gondii Hypoxanthine-Guanine Phosphoribosyltransferase with Xmp, Pyrophosphate and Two Mg2+ Ions Bound: Insights Into the Catalytic Mechanism Authors: Heroux, A. / White, E.L. / Ross, L.J. / Davis, R.L. / Borhani, D.W. #2: Journal: Gene / Year: 1994 Title: Isolation and Sequencing of a Cdna Encoding the Hypoxanthine-Guanine Phosphoribosyltransferase from Toxoplasma Gondii Authors: Vasanthakumar, G. / Van Ginkel, S. / Parish, G. | ||||||
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Structure visualization
| Structure viewer | Molecule: Molmil Jmol/JSmol |
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Downloads & links
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Download
| PDBx/mmCIF format | 1qk3.cif.gz | 206.8 KB | Display | PDBx/mmCIF format |
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| PDB format | pdb1qk3.ent.gz | 164.9 KB | Display | PDB format |
| PDBx/mmJSON format | 1qk3.json.gz | Tree view | PDBx/mmJSON format | |
| Others | Other downloads |
-Validation report
| Summary document | 1qk3_validation.pdf.gz | 654.9 KB | Display | wwPDB validaton report |
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| Full document | 1qk3_full_validation.pdf.gz | 671.7 KB | Display | |
| Data in XML | 1qk3_validation.xml.gz | 22.4 KB | Display | |
| Data in CIF | 1qk3_validation.cif.gz | 36.3 KB | Display | |
| Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/qk/1qk3 ftp://data.pdbj.org/pub/pdb/validation_reports/qk/1qk3 | HTTPS FTP |
-Related structure data
| Related structure data | ![]() 1qk4C ![]() 1hmpS 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 oper:
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| Details | THE BIOMOLECULE CONSISTS OF A HOMO- TETRAMERIC COMPLEXOF BIOPOLYMERS |
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Components
| #1: Protein | Mass: 26705.502 Da / Num. of mol.: 4 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() References: UniProt: Q26997, hypoxanthine phosphoribosyltransferase #2: Chemical | ChemComp-5GP / #3: Water | ChemComp-HOH / | |
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-Experimental details
-Experiment
| Experiment | Method: X-RAY DIFFRACTION / Number of used crystals: 1 |
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Sample preparation
| Crystal | Density Matthews: 2.09 Å3/Da / Density % sol: 47 % | ||||||||||||||||||||||||||||||
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| Crystal grow | Temperature: 277 K / pH: 5 Details: 15% PEG 8000, 100 MM KPO4 (PH 5-6), 0.25% BETA-OCTYLGLUCOPYRANOSIDE, 1 MM GMP, 277 K | ||||||||||||||||||||||||||||||
| Crystal grow | *PLUS Temperature: 4 ℃ / Method: vapor diffusion, hanging drop / PH range low: 6 / PH range high: 5 | ||||||||||||||||||||||||||||||
| Components of the solutions | *PLUS
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-Data collection
| Diffraction | Mean temperature: 100 K |
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| Diffraction source | Source: SYNCHROTRON / Site: CHESS / Beamline: A1 / Wavelength: 0.908 |
| Detector | Type: ADSC CCD / Detector: CCD / Date: Jun 15, 1996 / Details: RH MIRROR |
| Radiation | Monochromator: SI(111) / Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray |
| Radiation wavelength | Wavelength: 0.908 Å / Relative weight: 1 |
| Reflection | Resolution: 1.65→12.5 Å / Num. obs: 108535 / % possible obs: 96.4 % / Redundancy: 2.8 % / Biso Wilson estimate: 20.4 Å2 / Rsym value: 0.053 / Net I/σ(I): 9.4 |
| Reflection shell | Resolution: 1.65→1.71 Å / Redundancy: 2 % / Mean I/σ(I) obs: 1.7 / Rsym value: 0.459 / % possible all: 85.3 |
| Reflection | *PLUS Num. measured all: 302104 / Rmerge(I) obs: 0.053 |
| Reflection shell | *PLUS % possible obs: 85.3 % / Rmerge(I) obs: 0.459 |
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Processing
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| Refinement | Method to determine structure: MOLECULAR REPLACEMENTStarting model: PDB ENTRY 1HMP, SUBUNIT A, WITHOUT LOOPS, WATERS, OR GMP Resolution: 1.65→12.5 Å / SU B: 1.27012 / SU ML: 0.042 / Cross valid method: THROUGHOUT / σ(F): 0 / ESU R: 0.11491 / ESU R Free: 0.10941 Details: THE STRUCTURE WAS FIRST REFINED USING X-XPLOR. REFMAC AND ARP WERE USED TO FINISH THE REFINEMENT, USING THE X-PLOR-CALCULATED BULK SOLVENT CORRECTION.
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| Displacement parameters | Biso mean: 22.2 Å2 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Refinement step | Cycle: LAST / Resolution: 1.65→12.5 Å
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| Refine LS restraints |
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