Table 1

Statistics of x-ray diffraction data and structure refinement

PECAM-1 D1-D2
NativeSe SAD (single)Se SAD (combined)
Data collection    
 Space group I4122 I4122 I4122 
 Unit cell    
  a, b, c, Å 103.6, 103.6, 286.1 104.0, 104.0, 281.8 103.6, 103.6, 280.3 
  α, β, γ, ° 90, 90, 90 90, 90, 90 90, 90, 90 
 Wavelength, Å 0.97872 0.97624 0.97624 
 Resolution, Å* 20-3.0 (3.5-3.0) 20.0-2.8 (3.2-2.8) 20-3.0 (3.2-3.0) 
 Rmerge, (%)* 19.5 (50.5) 12.5 (49.3) 48.3 (79.6) 
 No. of reflections, measured/unique 177 694/29 711 223 739/36 261 4 827 647/16 005 
 <II>* 8.7 (2.3) 11.8 (2.4) 36.3 (8.5) 
 Completeness (%)* 99.6 (99.8) 99.6 (99.8) 98.9 (94.8) 
 Redundancy* 6.0 (4.7) 6.2 (4.8) 301.6 (232.7) 
Refinement    
 Resolution, Å  20.0-2.80  
 Unique reflections, work/free  36 246/1 014  
 Rwork/Rfree  0.238/0.279  
 No. of atoms: protein/carbohydrates/water  3 232/109/27  
 Molecules/asymmetric unit   
 RMSD from ideal    
  Bond lengths, Å  0.015  
  Bond angles, °  1.736  
 Ramachandran plot: favored/allowed/outliers, %  94.2/5.5/0.3  
 PDB accession no.  5C14  
PECAM-1 D1-D2
NativeSe SAD (single)Se SAD (combined)
Data collection    
 Space group I4122 I4122 I4122 
 Unit cell    
  a, b, c, Å 103.6, 103.6, 286.1 104.0, 104.0, 281.8 103.6, 103.6, 280.3 
  α, β, γ, ° 90, 90, 90 90, 90, 90 90, 90, 90 
 Wavelength, Å 0.97872 0.97624 0.97624 
 Resolution, Å* 20-3.0 (3.5-3.0) 20.0-2.8 (3.2-2.8) 20-3.0 (3.2-3.0) 
 Rmerge, (%)* 19.5 (50.5) 12.5 (49.3) 48.3 (79.6) 
 No. of reflections, measured/unique 177 694/29 711 223 739/36 261 4 827 647/16 005 
 <II>* 8.7 (2.3) 11.8 (2.4) 36.3 (8.5) 
 Completeness (%)* 99.6 (99.8) 99.6 (99.8) 98.9 (94.8) 
 Redundancy* 6.0 (4.7) 6.2 (4.8) 301.6 (232.7) 
Refinement    
 Resolution, Å  20.0-2.80  
 Unique reflections, work/free  36 246/1 014  
 Rwork/Rfree  0.238/0.279  
 No. of atoms: protein/carbohydrates/water  3 232/109/27  
 Molecules/asymmetric unit   
 RMSD from ideal    
  Bond lengths, Å  0.015  
  Bond angles, °  1.736  
 Ramachandran plot: favored/allowed/outliers, %  94.2/5.5/0.3  
 PDB accession no.  5C14  

PDB, Protein Data Bank; RMSD, root-mean-square deviation.

*

The highest resolution shell is shown in parentheses.

Rmerge = ΣhΣi|Ii−〈I〉|/ΣhΣiIi, where Ii is the observed intensity of the i-th measurement of reflection h, and〈I〉is the average intensity of that reflection obtained from multiple observations.

R = Σ||Fo|−|Fc||/Σ|Fo|, where Fo and Fc are the observed and calculated structure factors, respectively, calculated for all data. Rfree is the R value obtained for a test set of reflections consisting of a randomly selected 2.8% subset of data excluded from refinement.

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