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Table 2 Data collection and refinement statistics.

From: Crystal structures of a purple acid phosphatase, representing different steps of this enzyme's catalytic cycle

 

rkbPAP-sulfate

rkbPAP-fluoride

Crystal Parameters

  

   Unit cell lengths (Å)

a = b = 148.03 c = 160.09

a = 85.72 b = 188.45 c = 192.40

   Unit cell angle (°)

α = β = γ = 90.0

α = β = γ = 90.0

   Space group

I 41

P 212121

   Crystal dimensions (mm)

0.5 × 0.2 × 0.2

0.5 × 0.3 × 0.3

Diffraction Data a

  

   Temperature (K)

293

100

   Resolution Range (Å)

50.0 – 2.40

50.0 – 2.20

   Observations (I > 0σ (I))

152,476

425,475

   Unique reflections (I > 0σ (I))

55,092

142,147

   Completeness (%)

82.0 (52.0)

89.4 (65.1)

   Rsymb

0.115 (0.302)

0.075 (0.34)

Refinement

  

   cRfactor

0.1712

0.2237

   Rfree

0.2113

0.2543

   RMSDd bond lengths (Å)

0.007

0.007

   RMSDd bond angles (°)

1.285

1.233

Ramachandran Plot (%)

  

   Most favoured

83.2

83.3

   Additionally allowed

15.1

15.1

   Generously allowed

1.2

1.2

   Disallowed

0.5

0.7

  1. aValues in parentheses are for the outer resolution shells. bRsym = Σh Σ i |Ih,i- <Ih>|/Σh Σ i Ih,iwhere Ih,i is the intensity of the i th measurement of reflection h and <Ih> is the average value over multiple measurements. cRfactor = Σ||Fobs|-|Fcalc||/Σ|Fobs|, where the R-factor is calculated based on the reflections used in the refinement (90% of the total data) and R-free is calculated using the remaining 10% of the data. dRMSD = root mean square deviation.