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Open data
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Basic information
| Entry | Database: PDB / ID: 1tw8 | ||||||
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| Title | HincII bound to Ca2+ and cognate DNA GTCGAC | ||||||
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Keywords | hydrolase/DNA / restriction endonuclease / hydrolase-DNA COMPLEX | ||||||
| Function / homology | Function and homology informationtype II site-specific deoxyribonuclease / type II site-specific deoxyribonuclease activity / DNA restriction-modification system / DNA binding Similarity search - Function | ||||||
| Biological species | Haemophilus influenzae (bacteria) | ||||||
| Method | X-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 2.8 Å | ||||||
Authors | Etzkorn, C. / Horton, N.C. | ||||||
Citation | Journal: Biochemistry / Year: 2004Title: Ca2+ binding in the active site of HincII: implications for the catalytic mechanism Authors: Etzkorn, C. / Horton, N.C. | ||||||
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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 | 1tw8.cif.gz | 268.7 KB | Display | PDBx/mmCIF format |
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| PDB format | pdb1tw8.ent.gz | 210.5 KB | Display | PDB format |
| PDBx/mmJSON format | 1tw8.json.gz | Tree view | PDBx/mmJSON format | |
| Others | Other downloads |
-Validation report
| Summary document | 1tw8_validation.pdf.gz | 419.1 KB | Display | wwPDB validaton report |
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| Full document | 1tw8_full_validation.pdf.gz | 457.9 KB | Display | |
| Data in XML | 1tw8_validation.xml.gz | 26.5 KB | Display | |
| Data in CIF | 1tw8_validation.cif.gz | 43.9 KB | Display | |
| Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/tw/1tw8 ftp://data.pdbj.org/pub/pdb/validation_reports/tw/1tw8 | HTTPS FTP |
-Related structure data
| Related structure data | ![]() 1tx3C ![]() 1kc6S 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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| 2 | ![]()
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| Unit cell |
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| Details | The biological assembly is one half of the asymmetric unit including two protein subunits and two strands of DNA (ie. chains A-B, E-F) |
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Components
| #1: DNA chain | Mass: 3993.586 Da / Num. of mol.: 4 / Source method: obtained synthetically / Details: commercial phosphoramidite chemistry #2: Protein | Mass: 29820.066 Da / Num. of mol.: 4 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Haemophilus influenzae (bacteria) / Gene: Hinc II / Production host: ![]() References: UniProt: E1B6R0, UniProt: P17743*PLUS, type II site-specific deoxyribonuclease #3: Chemical | ChemComp-CA / #4: Chemical | ChemComp-NA / #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: 2.79 Å3/Da / Density % sol: 55.98 % |
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| Crystal grow | Temperature: 290 K / Method: vapor diffusion, hanging drop / pH: 5.5 Details: PEG 4000, 0.1M citrate, 0.15M NaCl, pH 5.5, VAPOR DIFFUSION, HANGING DROP, temperature 290K |
-Data collection
| Diffraction | Mean temperature: 100 K |
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| Diffraction source | Source: SYNCHROTRON / Site: SSRL / Beamline: BL9-1 / Wavelength: 0.9 Å |
| Detector | Type: ADSC QUANTUM 4 / Detector: CCD |
| Radiation | Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray |
| Radiation wavelength | Wavelength: 0.9 Å / Relative weight: 1 |
| Reflection | Resolution: 2.8→20 Å / Num. obs: 36795 / % possible obs: 96.9 % / Observed criterion σ(F): 2 / Observed criterion σ(I): 2 / Redundancy: 2.7 % / Biso Wilson estimate: 55.1 Å2 / Rmerge(I) obs: 0.066 / Rsym value: 0.066 / Net I/σ(I): 5.3 |
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Processing
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| Refinement | Method to determine structure: MOLECULAR REPLACEMENTStarting model: PDB ENTRY 1KC6 Resolution: 2.8→20 Å / Cross valid method: Rfree / σ(F): 2 / σ(I): 2 / Stereochemistry target values: CNS
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| Refinement step | Cycle: LAST / Resolution: 2.8→20 Å
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Haemophilus influenzae (bacteria)
X-RAY DIFFRACTION
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