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Yorodumi- PDB-3irn: Trypanosoma cruzi Dihydrofolate Reductase-Thymidylate Synthase CO... -
+Open data
-Basic information
Entry | Database: PDB / ID: 3irn | ||||||
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Title | Trypanosoma cruzi Dihydrofolate Reductase-Thymidylate Synthase COMPLEXED WITH NADPH AND Cycloguanil | ||||||
Components | Bifunctional dihydrofolate reductase-thymidylate synthase | ||||||
Keywords | OXIDOREDUCTASE / TRANSFERASE / Trypanosoma cruzi / DHFR-TS antifolate complex / Methyltransferase / Multifunctional enzyme / NADP / Nucleotide biosynthesis / One-carbon metabolism | ||||||
Function / homology | Function and homology information thymidylate synthase / thymidylate synthase activity / dTMP biosynthetic process / dihydrofolate reductase / dihydrofolate reductase activity / tetrahydrofolate biosynthetic process / one-carbon metabolic process / methylation / mitochondrion / cytosol Similarity search - Function | ||||||
Biological species | Trypanosoma cruzi (eukaryote) | ||||||
Method | X-RAY DIFFRACTION / MOLECULAR REPLACEMENT / Resolution: 2.6 Å | ||||||
Authors | Chitnumsub, P. / Yuvaniyama, J. / Yuthavong, Y. | ||||||
Citation | Journal: To be Published Title: Structural basis of antifolate inhibition of Trypanosoma cruzi Dihydrofolate Reductase-Thymidylate Synthase Authors: Chitnumsub, P. / Yuvaniyama, J. / Vilaivan, T. / Vanichtanankul, J. / Kamchonwongpaisan, S. / Yuthavong, Y. | ||||||
History |
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-Structure visualization
Structure viewer | Molecule: MolmilJmol/JSmol |
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-Downloads & links
-Download
PDBx/mmCIF format | 3irn.cif.gz | 416.9 KB | Display | PDBx/mmCIF format |
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PDB format | pdb3irn.ent.gz | 340 KB | Display | PDB format |
PDBx/mmJSON format | 3irn.json.gz | Tree view | PDBx/mmJSON format | |
Others | Other downloads |
-Validation report
Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/ir/3irn ftp://data.pdbj.org/pub/pdb/validation_reports/ir/3irn | HTTPS FTP |
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-Related structure data
Related structure data | 3invC 3irmSC 3iroC C: citing same article (ref.) S: Starting model for refinement |
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Similar structure data |
-Links
-Assembly
Deposited unit |
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2 |
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Unit cell |
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-Components
#1: Protein | Mass: 58928.121 Da / Num. of mol.: 4 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Trypanosoma cruzi (eukaryote) / Strain: Y / Plasmid: pET11c / Production host: Escherichia coli (E. coli) / Strain (production host): BL21(DE3) pLysS References: UniProt: Q27793, dihydrofolate reductase, thymidylate synthase #2: Chemical | ChemComp-1CY / #3: Chemical | ChemComp-NDP / #4: Chemical | ChemComp-PO4 / #5: 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: 2.23 Å3/Da / Density % sol: 44.73 % |
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Crystal grow | Temperature: 297 K / Method: microbatch / pH: 5.6 Details: PEG4000, NH4OAc, pH 5.6, microbatch, temperature 297K |
-Data collection
Diffraction | Mean temperature: 100 K |
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Diffraction source | Source: ROTATING ANODE / Type: ENRAF-NONIUS FR591 / Wavelength: 1.54 Å |
Detector | Type: Kappa CCD / Detector: CCD / Date: Mar 16, 2007 |
Radiation | Monochromator: GRAPHITE / Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray |
Radiation wavelength | Wavelength: 1.54 Å / Relative weight: 1 |
Reflection | Resolution: 2.6→44.48 Å / Num. all: 59449 / Num. obs: 59498 / % possible obs: 94.1 % / Observed criterion σ(F): 0 / Biso Wilson estimate: 45 Å2 / Limit h max: 26 / Limit h min: -30 / Limit k max: 63 / Limit k min: -30 / Limit l max: 32 / Limit l min: 0 / Observed criterion F max: 2047492.86 / Observed criterion F min: 21.6 / Rsym value: 0.073 / Χ2: 1.201 / Net I/σ(I): 10.6 |
Reflection shell | Resolution: 2.6→2.69 Å / Num. unique all: 5192 / Rsym value: 0.296 / Χ2: 1.474 / % possible all: 82.7 |
-Processing
Software |
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Refinement | Method to determine structure: MOLECULAR REPLACEMENT Starting model: The partial structure of 3IRM Resolution: 2.6→44.48 Å / Rfactor Rfree error: 0.005 / Occupancy max: 1 / Occupancy min: 1 / Isotropic thermal model: Overall / Cross valid method: THROUGHOUT / Stereochemistry target values: Engh & Huber
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Solvent computation | Solvent model: CNS bulk solvent model used / Bsol: 28.3081 Å2 / ksol: 0.35 e/Å3 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Displacement parameters | Biso max: 91.37 Å2 / Biso mean: 33.46 Å2 / Biso min: 2.37 Å2
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Refine analyze |
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Refinement step | Cycle: LAST / Resolution: 2.6→44.48 Å
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Refine LS restraints |
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LS refinement shell | Refine-ID: X-RAY DIFFRACTION
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