+Open data
-Basic information
Entry | Database: PDB / ID: 3kph | ||||||
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Title | Crystal structure of Mycoplasma arthritidis-derived mitogen | ||||||
Components | Superantigen | ||||||
Keywords | IMMUNE SYSTEM / superantigen / MAM / 3D-domain swap | ||||||
Function / homology | Function and homology information mam-mhc complex, Chain D, Domain 2 / Hla class ii histocompatibility antigen, dr alpha chain. Chain D, domain 1 / Mycoplasma arthritidis-derived mitogen / Superantigen MAM / Mycoplasma arthritidis-derived mitogen, C-terminal / Mycoplasma arthritidis-derived mitogen / Four Helix Bundle (Hemerythrin (Met), subunit A) / Arc Repressor Mutant, subunit A / Up-down Bundle / Orthogonal Bundle / Mainly Alpha Similarity search - Domain/homology | ||||||
Biological species | Mycoplasma arthritidis (bacteria) | ||||||
Method | X-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 2.8 Å | ||||||
Authors | Liu, L.H. / Li, H.M. | ||||||
Citation | Journal: J.Mol.Biol. / Year: 2010 Title: Crystal Structure of the Mycoplasma arthritidis-Derived Mitogen in Apo Form Reveals a 3D Domain-Swapped Dimer. Authors: Liu, L. / Li, Z. / Guo, Y. / Vanvranken, S.J. / Mourad, W. / Li, H. | ||||||
History |
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-Structure visualization
Structure viewer | Molecule: MolmilJmol/JSmol |
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-Downloads & links
-Download
PDBx/mmCIF format | 3kph.cif.gz | 93.6 KB | Display | PDBx/mmCIF format |
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PDB format | pdb3kph.ent.gz | 72.7 KB | Display | PDB format |
PDBx/mmJSON format | 3kph.json.gz | Tree view | PDBx/mmJSON format | |
Others | Other downloads |
-Validation report
Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/kp/3kph ftp://data.pdbj.org/pub/pdb/validation_reports/kp/3kph | HTTPS FTP |
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-Related structure data
Related structure data | 1r5iS 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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Unit cell |
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Components on special symmetry positions |
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-Components
#1: Protein | Mass: 25570.594 Da / Num. of mol.: 2 / Fragment: UNP residues 26-239 / Mutation: K201A Source method: isolated from a genetically manipulated source Source: (gene. exp.) Mycoplasma arthritidis (bacteria) / Plasmid: pGEX-6P-1 / Production host: Escherichia coli (E. coli) / Strain (production host): BL21(DE3) / References: UniProt: Q48898 #2: Chemical | #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: 4.9 Å3/Da / Density % sol: 74.9 % |
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Crystal grow | Temperature: 293 K / Method: vapor diffusion / pH: 6.2 Details: 13-15% PEG 3350, 0.2 M NaCl, 5% Ethylene glycol, 5% Glycerol, 0.1 M Potassium/sodium phosphate pH 6.2, VAPOR DIFFUSION, temperature 293K |
-Data collection
Diffraction | Mean temperature: 100 K |
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Diffraction source | Source: SYNCHROTRON / Site: NSLS / Beamline: X4A / Wavelength: 1.2757 Å |
Detector | Type: ADSC QUANTUM 4 / Detector: CCD / Date: Sep 10, 2004 / Details: Mirrors |
Radiation | Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray |
Radiation wavelength | Wavelength: 1.2757 Å / Relative weight: 1 |
Reflection | Resolution: 2.8→50 Å / Num. all: 24867 / Num. obs: 24867 / % possible obs: 95.9 % / Observed criterion σ(I): 0 / Redundancy: 6.93 % / Rmerge(I) obs: 0.117 / Rsym value: 0.117 / Net I/σ(I): 9.6 |
Reflection shell | Resolution: 2.8→2.9 Å / Redundancy: 5.4 % / Rmerge(I) obs: 0.692 / Mean I/σ(I) obs: 2.7 / Rsym value: 0.692 / % possible all: 96.8 |
-Processing
Software |
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Refinement | Method to determine structure: MOLECULAR REPLACEMENT Starting model: PDB entry 1R5I Resolution: 2.8→50 Å / Rfactor Rfree error: 0.008 / Occupancy max: 1 / Occupancy min: 0.5 / Data cutoff high absF: 2330671 / Data cutoff low absF: 0 / Isotropic thermal model: RESTRAINED / Cross valid method: THROUGHOUT / σ(F): 0 / σ(I): 0 / Stereochemistry target values: Engh & Huber
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Solvent computation | Solvent model: FLAT MODEL / Bsol: 50.483 Å2 / ksol: 0.353 e/Å3 | ||||||||||||||||||||||||||||||||||||
Displacement parameters | Biso max: 133.23 Å2 / Biso mean: 69.238 Å2 / Biso min: 19.64 Å2
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Refine analyze |
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Refinement step | Cycle: LAST / Resolution: 2.8→50 Å
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Refine LS restraints |
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LS refinement shell | Resolution: 2.8→2.98 Å / Rfactor Rfree error: 0.028 / Total num. of bins used: 6
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Xplor file |
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