Table 3 SFX data collection and refinement statistics, Part I.

From: PEO-sheathed liquid jets increase sample delivery stability for serial femtosecond X-ray crystallography

Parameter

Sample

HEWL13

HEWL1

HEWL1+H2O

HEWL1+PEO

HEWL1+PEO

Liquid flow rates1 (µL/min)

30+0

30+0

20+10

20+10

10+20

Helium flow rate (mg/min)

27.0

27.0

30.9

28.5

28.4

No. of pulses/train

202

202

100

352

352

No. of pulses/s

2,020

2,020

1,000

3,520

3,520

Total no. frames

1,205,598

1,808,196

594,900

1,052,298

1,035,450

No. of hits

41,769

36,231

6,473

14,207

4,704

Hit rate (%)

3.46

2.00

1.09

1.35

0.45

No. of crystals

48,578

40,277

4,151

13,225

4,568

No. of indexed crystals

38,666

34,126

3,975

12,605

4,362

Prop. of indexable hits (%)

92.57

94.19

61.41

88.72

92.73

Total indexing rate (%)

3.21

1.89

0.67

1.20

0.42

Data collection time (min)2

3.57

4.37

24.94

3.95

11.24

Unit cell lengths a,b,c (Å)

79.19/79.21/38.08

79.20/79.20/38.08

79.14/79.04/37.94

79.02/79.03/37.91

79.09/79.06/37.90

Unit cell angles\(\alpha\),\(\beta\),\(\gamma\)(°)

90.00/90.00/90.00

90.00/90.00/89.99

90.09/89.90/89.92

90.01/89.98/89.99

90.05/89.95/89.96

Resolution (Å)

19.23-1.70

19.23-1.70

19.01-1.70

19.01-1.70

19.01-1.70

 

(1.76-1.70)

(1.76-1.70)

(1.76-1.70)

(1.76-1.70)

(1.76-1.70)

Signal-to-noise ratio

8.42 (2.49)

8.44 (3.81)

3.46 (2.76)

4.80 (3.52)

3.20 (2.52)

Completeness (%)

100.00 (100.00)

100.00 (100.00)

100.00 (100.00)

100.00 (100.00)

100.00 (100.00)

Redundancy

280.99 (189.50)

219.74 (148.60)

44.10 (30.40)

111.27 (76.00)

40.53 (27.90)

Rsplit (%)

10.84 (31.10)

12.39 (23.61)

37.47 (47.30)

27.31 (39.47)

42.68 (54.94)

CC1/2 (%)

97.97 (83.77)

97.59 (88.68)

74.95 (64.25)

86.87 (73.69)

70.14 (53.52)

CC* (%)

99.49 (95.48)

99.39 (96.95)

92.57 (88.45)

86.42 (92.12)

90.80 (83.50)

  1. 1First value: sample flow, second value: sheath flow.
  2. 2The time it takes to acquire 10,000 indexed diffraction patterns under these conditions (considering the number of pulses, experienced hit rate and proportion of indexable hits).
  3. 3Using a larger (3.5 µm wide) X-ray beam (de-focused nano-KB mirrors). Every other sample (also the ones shown in Table 4) was probed with a 600 nm wide beam (focused nano-KB mirrors).