Point symmetry: (Schoenflies symbol: C2 (2 fold cyclic)) Helical symmetry: (Num. of operations: 2 / Rise per n subunits: 1 Å / Rotation per n subunits: 180 °)
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Components
#1: Protein
Avidin / Antidin
Mass: 15863.781 Da / Num. of mol.: 2 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Gallus gallus (chicken) / Gene: AVD / Production host: Escherichia coli BL21 (bacteria) / Variant (production host): A1 / References: UniProt: P02701
Mass: 18.015 Da / Num. of mol.: 26 / Source method: isolated from a natural source / Formula: H2O
Has protein modification
Y
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Experimental details
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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: 41.23 %
Crystal grow
Temperature: 294 K / Method: vapor diffusion, sitting drop Details: Drop size: 150 nl of protein-ligand solution and well solution. Protein-ligand solution: 1.8 mg/ml of protein solution (20 mM sodium phosphate, 1M sodium chloride, 20mM imidazole, pH 7.4) ...Details: Drop size: 150 nl of protein-ligand solution and well solution. Protein-ligand solution: 1.8 mg/ml of protein solution (20 mM sodium phosphate, 1M sodium chloride, 20mM imidazole, pH 7.4) and 50 mM ligand solution (1.57 mg in 100 microL of water) were mixed in 10:1 (v/v) ratio. Well solution: 0.18 M sodium chloride, 0.09 M sodium cacodylate (pH 6.5) and 1.8 M ammonium sulfate. Temp details: Temperature-controlled incubator was used.
Resolution: 2.7→19.56 Å / Cor.coef. Fo:Fc: 0.944 / Cor.coef. Fo:Fc free: 0.895 / SU B: 13.075 / SU ML: 0.262 / Cross valid method: THROUGHOUT / ESU R Free: 0.349 / Details: HYDROGENS HAVE BEEN ADDED IN THE RIDING POSITIONS
Rfactor
Num. reflection
% reflection
Selection details
Rfree
0.23995
370
5 %
RANDOM
Rwork
0.17662
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obs
0.17971
7073
96.19 %
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Solvent computation
Ion probe radii: 0.8 Å / Shrinkage radii: 0.8 Å / VDW probe radii: 1.2 Å