Table 2

Statistics of crystallographic structure refinement


D86A
D247A
E342A
E342A/Raffinose

Resolution range (Å)
30 – 2.1
30 – 2.1
30 – 2.1
30 – 2.1
R-factor (%)
16.2
16.8
18.0
17.9
Rfree (%)a
20.8
21.4
22.2
22.4
Total number of non-hydrogen atoms
3705
3711
3704
3748
     Protein atoms
3439
3439
3438
3438
     Water molecules
265
271
265
275
     Ion sites
1
1
1
1
     Raffinose molecules
0
0
0
1
RMSD from ideal values




     Bond length (Å)
0.009
0.009
0.009
0.007
     Bond angle (°)
1.20
1.19
1.21
1.07
     Main chain B-factors (Å2)
0.34
0.34
0.34
0.25
     Side chain B-factors (Å2)
1.12
1.13
1.16
0.72
Wilson B-factor (Å2)
14.7
14.7
14.6
17.7
Average B-factor protein atoms (Å2)
14.1
13.4
15.2
15.4
Average B-factor solvent atoms (Å2)
19.3
19.6
21.9
16.7
Aver. B-factor (Å2) of raffinose
-
-
-
13.5
Ramachandran statisticsb




     Most favoured regions (%)
88.5
89.3
88.3
88.8
     Additionally allowed regions (%)
9.9
9.4
10.4
10.2
     Generously allowed regions (%)
0.8
0.5
0.3
0.3
     Disallowed regions (%)
0.8
0.8
1.0
0.8

aRfree calculated using 5% of total reflections omitted from refinement

bRamachandran statistics calculated using PROCHECK

Meng and Fütterer BMC Structural Biology 2008 8:16   doi:10.1186/1472-6807-8-16