Table 1 Data collection and refinement statistics for the crystal structures of the Se–Met-labeled and native nigritoxin molecules

From: Nigritoxin is a bacterial toxin for crustaceans and insects

 

Nigritoxin_Semet

Nigritoxin_native

Data collection

 Beamline

PROXIMA 2

ID29

 Wavelength(s)

0.9793

1.0332

 Space group

I 23

I 23

 Unit cell

a = b = c = 183.32 Å

a = b = c = 185.16 Å

 

α = β = γ = 90.00°

α = β = γ = 90.00°

 Resolution rangea (Å)

45.83–3.02 (3.20–3.02)

65.46–2.10 (2.21–2.10)

 Total data

449,101

205,825

 Unique data

39,002

60,874

 Completeness (%)

99.9 (99.8)

99.3 (97.7)

 Mean I/σ (I)

15.13 (1.90)

13.3 (3.3)

 R sym b; R pim c (%)

0.22 (1.26); 0.05 (0.20)

0.06 (0.39); 0.03 (0.21)

 Redundancy

11.5

3.4

 Anom CC

54

 Anom FOM

0.353

Refinement statistics

 Resolution range

 

70.00–2.1 (2.155–2.10)

 Unique reflexions

 

57,805 (4120)

 Reflexions R free

 

3069 (234)

 R/R free (%)

 

22.9/26.5 (25.3/29.6)

 RMSD bond lengths

 

0.019 Å

 RMSD bond angles

 

1.95°

 Overall B factor (Å2)

 

48.78

 B factor: molecule A (Å2)

 

40.74

 B factor: solvant (Å2)

 

57.67

  1. aValues in parentheses concern the high-resolution shell
  2. b R sym = Σ|II av |/Σ|I|, where the summation is over all symmetry equivalent reflections
  3. c R pim corresponds to the multiplicity weighted R sym