+Open data
-Basic information
Entry | Database: PDB / ID: 2a8c | ||||||
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Title | Haemophilus influenzae beta-carbonic anhydrase | ||||||
Components | Carbonic anhydrase 2 | ||||||
Keywords | LYASE / x-ray structure / carbonic anhydrase | ||||||
Function / homology | Function and homology information carbon utilization / carbonic anhydrase / carbonate dehydratase activity / zinc ion binding Similarity search - Function | ||||||
Biological species | Haemophilus influenzae (bacteria) | ||||||
Method | X-RAY DIFFRACTION / MOLECULAR REPLACEMENT / Resolution: 2.3 Å | ||||||
Authors | Cronk, J.D. / Rowlett, R.S. / Zhang, K.Y.J. / Tu, C. / Endrizzi, J.A. / Lee, J. / Gareiss, P.C. / Preiss, J.R. | ||||||
Citation | Journal: Biochemistry / Year: 2006 Title: Identification of a Novel Noncatalytic Bicarbonate Binding Site in Eubacterial beta-Carbonic Anhydrase Authors: Cronk, J.D. / Rowlett, R.S. / Zhang, K.Y.J. / Tu, C. / Endrizzi, J.A. / Lee, J. / Gareiss, P.C. / Preiss, J.R. | ||||||
History |
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-Structure visualization
Structure viewer | Molecule: MolmilJmol/JSmol |
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-Downloads & links
-Download
PDBx/mmCIF format | 2a8c.cif.gz | 271.5 KB | Display | PDBx/mmCIF format |
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PDB format | pdb2a8c.ent.gz | 220.9 KB | Display | PDB format |
PDBx/mmJSON format | 2a8c.json.gz | Tree view | PDBx/mmJSON format | |
Others | Other downloads |
-Validation report
Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/a8/2a8c ftp://data.pdbj.org/pub/pdb/validation_reports/a8/2a8c | HTTPS FTP |
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-Related structure data
Related structure data | 2a8dC 2esfC 1i6pS 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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1 |
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2 |
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Unit cell |
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Components on special symmetry positions |
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Details | Chains C, D, E, and F comprise a biological assembly. A second biological assembly can be formed from chains A and B by the operation -x, y, -z |
-Components
#1: Protein | Mass: 26286.984 Da / Num. of mol.: 6 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Haemophilus influenzae (bacteria) / Gene: can / Plasmid: pTrc99a / Production host: Escherichia coli (E. coli) / Strain (production host): JM109 / References: UniProt: P45148, carbonic anhydrase #2: Chemical | ChemComp-ZN / #3: Chemical | ChemComp-SO4 / #4: 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: 55.96 % |
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Crystal grow | Temperature: 277 K / Method: vapor diffusion, hanging drop / pH: 7.5 Details: ammonium sulfate, PEG 400, HEPES, pH 7.5, VAPOR DIFFUSION, HANGING DROP, temperature 277K |
-Data collection
Diffraction | Mean temperature: 95 K |
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Diffraction source | Source: ROTATING ANODE / Type: RIGAKU RU200 / Wavelength: 1.5418 Å |
Detector | Type: RIGAKU RAXIS IV / Detector: IMAGE PLATE / Date: Nov 19, 2002 |
Radiation | Monochromator: yale mirrors / Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray |
Radiation wavelength | Wavelength: 1.5418 Å / Relative weight: 1 |
Reflection | Resolution: 2.3→25 Å / Num. all: 65706 / Num. obs: 65683 / % possible obs: 85.5 % / Observed criterion σ(I): 5 / Redundancy: 2.9 % / Biso Wilson estimate: 52.79 Å2 / Rsym value: 0.045 / Net I/σ(I): 20.4 |
Reflection shell | Resolution: 2.3→2.38 Å / Redundancy: 1.9 % / Mean I/σ(I) obs: 3.04 / Rsym value: 0.23 / % possible all: 42.1 |
-Processing
Software |
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Refinement | Method to determine structure: MOLECULAR REPLACEMENT Starting model: PDB entry 1I6P Resolution: 2.3→25 Å / Data cutoff high absF: 10000 / Data cutoff low absF: 0 / Isotropic thermal model: anisotropic / Cross valid method: THROUGHOUT / σ(F): 0 / Stereochemistry target values: Engh & Huber
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Displacement parameters |
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Refine analyze |
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Refinement step | Cycle: LAST / Resolution: 2.3→25 Å
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Refine LS restraints |
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LS refinement shell | Resolution: 2.3→2.38 Å
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