Table 2 Data collection, phasing, and structure refinement statistics of SsTRIC

Wavelength (Å)

1.00000

1.00137

1.5418

Beamline^a

SSRF BL17U

SSRF BL17U

Rigaku MicroMax-007

Space group

C 2

C 2

C 2

Resolution (Å)

50–2.5 (2.64–2.5)

50–2.2 (2.32–2.2)

50–3.4 (3.52–3.4)

Cell dimensions (Å, °)

a = 152.07

a = 152.07

a = 150.40

b = 87.48

b = 87.73

b = 86.44

c = 173.62

c = 173.06

c = 173.30

β = 108.75

β = 108.90

β = 108.59

R _sym

0.211 (0.883)

0.149 (0.604)

0.133 (0.886)

R _pim ^b

0.076 (0.308)

0.075 (0.300)

N/A

I/σ

8.1 (3.9)

7.1 (2.7)

12.1 (2.1)

Completeness (%)

98.8 (96.9)

97.6 (94.8)

88.6 (87.2)

Redundancy

8.9 (8.7)

4.7 (4.6)

5.9 (6.0)

 No. of heavy atom sites

6

 Figure of merit (before/after DM)

0.258 (0.640)

 Resolution

50–2.2

 No. of reflections (no. of reflections in free set)

106,561 (2614)

R _work (%)

21.08

R _free (%)

22.85

 All atoms

9642 (38.1)

 Protein

9054 (37.0) (6 chains)

 Cation

33 K⁺ (77.9)

 Water

381 (46.0)

 Others (detergent)

174 (68.4)

 Ramachandran plot (%)^c

96.8/2.5/0.7

 RMSD bond length (Å)

0.007

 RMSD bond angles (°)

1.22