Table 1. Data collection and refinement statistics.
Se-SAD/sulfate | 3OHAA | DHHA | YddE (E. coli) | |
---|---|---|---|---|
Data collection | ||||
Wavelength,* Å | 0.934/E-ID14/1 | 1.001/E-ID14/4 | 1.542/Rotating anode | 0.9793/N-X4A |
Resolution, Å | 30.0-1.7 (1.8-1.7)† | 20.0-1.35 (1.45-1.35)† | 20.0-1.88 (1.98-1.88)† | 20.0-2.3 (2.38-2.3)† |
Space group | P3221 | P21212 | P21212 | C2221 |
Cell constants, Å | a = b = 56.3, c = 156.4 | a = 92.9, b = 100.1, c = 57.1 | a = 92.8, b = 99.8, c = 57.4 | a = 125.0, b = 130.6, c = 48.6 |
Cell angles, ° | α = β = 90, γ = 120 | α = β = γ = 90 | α = β = γ = 90 | α = β = γ = 90 |
Average redundancy | 20.6 (15.3)† | 4.0 (3.7)† | 4.9 (4.9)† | 4.3 (27)† |
I/σ | 27.4 (9.8)† | 11.3 (3.1)† | 14.0 (5.4)† | 12.6 (3.0)† |
Completeness, % | 98.2 (91.1)† | 99.7 (99.3)† | 97.8 (95.7)† | 89.5 (85.6)† |
Anom. completeness‡ % | 98.3 (90.9)† | — | — | 96 (86)† |
Rsym§ | 7.5 (26.8)† | 6.8 (41.5)† | 7.5 (28.4)† | 7.5 (24.7)† |
Wilson B factor, Å2 | 22 | 20 | 24 | 38 |
Refinement | ||||
Resolution, Å | 20.0-1.35 (1.74-1.70)† | 20.0-1.35 (1.39-1.35)† | 20.0-1.88 (1.93-1.88)† | 20.0-2.3 (2.44-2.30) |
R¶ | 13.0 (14.9)† | 11.8 (22.2)† | 15.0 (20.8)† | 21.8 (27.1)† |
Rfree∥ | 15.3 (17.3)† | 15.0 (24.2)† | 19.7 (24.1)† | 26.0 (31.7)† |
Rmsd bonds, Å/angles, ° | 0.025/1.562 | 0.026/2.058 | 0.025/1.885 | 0.007/1.4 |
B-factor deviation bonds/angles, Å2 | ||||
Main chain | 1.0/1.8 | 2.3/3.0 | 1.2/2.0 | 1.3/2.1 |
Side chain | 3.2/5.0 | 4.2/5.9 | 3.2/5.0 | 1.9/2.5 |
Residues in Ramachandran core,** % | 93 | 92 | 91 | 87 |
Protein atoms | 2,156 | 4,468 | 4,443 | 2,379 |
Solvent atoms | 331 | 679 | 373 | 25 |
Ligand atoms | 16 | 36 | 22 | 144 |
Average B factor, Å2 | 14 | 12 | 17 | 34 |
PDB accession code | 1U1V | 1U1W | 1U1X | 1SDJ |
Radiation source: E, European Synchrotron Radiation Facility (Grenoble, France); N, National Synchrotron Light Source (Brookhaven, NY).
Values for the highest shell are shown in parentheses.
Completeness calculations treat Friedel-pairs as separate observations.
Rsym = ΣΣ I (h)j — 〈I(h)〉/ΣΣ I(h)j where I(h)j is the measured diffraction intensity and the summation includes all observations.
R is the R factor = (Σ|FO| — Σ|FC|)/Σ|FO|.
Rfree is the R factor calculated by using 5% of the data that were excluded from the refinement.
Ramachandran core refers to the most favored regions in the ϕ/ψ Ramachandran plot.