Table 1 Crystallographic data collection, phasing, and refinement statistics

From: Structural basis for the homotypic fusion of chlamydial inclusions by the SNARE-like protein IncA

 

IncA87–246

(IncA87–246)NaI

IncA87–246(G144A)

Data collection

 X-ray source

SSRL 9–2

MicroMax-007 HF

MicroMax-007 HF

 Detector

Pilatus 6M PAD

Pilatus3 R 200K

Pilatus3 R 200K

 Space group

P21

P21

P1

 Cell dimensions

  a, b, c (Å)

38.4, 48.8, 41.7

38.4, 48.7, 41.7

41.0, 43.5, 45.8

  α, β, γ (°)

90.0, 103.7, 90.0

90.0, 103.8, 90.0

92.9, 95.9, 93.9

 Wavelength (Å)

0.98

1.54

1.54

 Resolution (Å)

15–1.12 (1.16–1.12)

15–1.80 (1.83–1.80)

15–1.95 (2.02–1.95)

 No. reflections (tot/unique)

875,396/ 52,606

1,788,976/ 13,917

282,344/ 20,042

 R sym

5.5 (29.8)

7.6 (22.4)

4.8 (13.1)

 R pim

2.3 (14.8)

1.9 (2.2)

4.8 (13.0)

 MeanI / σI

47.9 (4.7)

104.5 (23.9)

20.4 (5.8)

 CC1/2

0.963

0.997

0.950

 Completeness (%)

91.3 (55.0)

99.5 (99.4)

88.1 (66.3)

 Redundancy

7.3 (4.5)

16.0 (12.4)

1.5 (1.5)

 Wilson B-factor (Å2)

10.8

13.3

13.4

SAD phasing

 Number Iodine sites

 

16

 

 FOM

 

0.37

 

 Corr. of local RMS density

 

0.61

 

Refinement

 PDB ID

6E7E

 

6E6A

 Resolution (Å)

15–1.12

 

15–1.95

 No. reflections

50,533

 

20,013

Rwork/Rfreea

14.1/16.8

 

16.9/21.2

 No. of complexes in  AU

1

 

2

 No. of protein atoms

1375

 

2650

 Ramachandran (favored/allowed/outliers)

100/0.0/0.0

 

99.7/0.3/0.0

 R.M.S.D. from ideality

  Bond lengths (Å)

0.012

 

0.005

  Bond angles (°)

1.649

 

0.860

 MolProbity Score/rankingb

1.15/94th percentile

 

1.24/99th percentile

 MolProbity ClashScore/ rankingb

3.65/5th percentile

 

4.71/98th percentile

  1. Values in parentheses are for highest-resolution shells
  2. aRfree was calculated using ~ 5% randomly selected reflections
  3. bPercentile ranking relative to X-ray structures solved at similar resolution