Table S1.
Data collection and refinement statistics
Rep–Ant complex | Rep92–198 (native) | ||
SeMet derivative | Native | ||
Crystal parameters | |||
X-ray source | BL26B1 | PAL-7A | PAL-7A |
X-ray wavelength, Å | 0.97707 | 1.00001 | 0.97935 |
Space group | P32 | P32 | P1 |
Unit cell parameters | |||
a, b, c, Å | 87.6, 87.6, 331.9 | 86.6, 86.6, 337.0 | 61.6, 62.5, 267.9 |
γ, degrees | 120.00 | 120.00 | 72.7 |
Absorption (Se) | Peak | ||
Resolution range, Å | 50–2.80 | 50–2.50 | 50–3.0 |
Total/unique reflections | 749,684/139,420 | 362,760/96,551 | 246,012/ 150,114 |
Completeness, % | 99.9 (99.7)* | 99.3 (99.9)† | 98.5 (98.6)‡ |
Average I/σ, I | 47.2 (4.0)* | 27.4 (2.9)† | 22.8 (4.9)‡ |
Rmerge§, % | 13.3 (83.9)* | 8.8 (64.6)† | 7.2 (33.2)‡‡ |
Model refinement statistics | |||
Resolution range, Å | 36.6–2.5 | 49.1–3.0 | |
Rwork/Rfree¶, % | 20.1/21.0 | 21.6/27.3 | |
Number/average B-factor, Å2 | |||
Protein nonhydrogen atoms | 13,264/64.4 | 25,435/78.5 | |
Water oxygen atoms | 64/66.2 | 527/41.4 | |
Rmsd | |||
Bond lengths, Å | 0.006 | 0.007 | |
Bond angles, degrees | 0. 980 | 1.254 | |
Protein-geometry analysis | |||
Ramachandran favored, % | 94.15 | 90.95 | |
Ramachandran allowed, % | 5.73 | 6.40 | |
Ramachandran outliers, % | 0.12 | 2.65 |
Values in parentheses refer to the highest-resolution shell (2.85–2.80 Å).
Values in parentheses refer to the highest-resolution shell (2.54–2.50 Å).
Values in parentheses refer to the highest-resolution shell (3.05–3.00 Å).
Rmerge = ΣhklΣi | Ii(hkl) – <I(hkl)> |/ΣhklΣi Ii(hkl)i, where I(hkl) is the intensity of reflection hkl, Σhkl is the sum over all reflections, and Σi is the sum over i measurements of reflection hkl.
R = Σhkl | |Fobs| – |Fcalc| |/Σhkl |Fobs|, where Rfree was calculated for a randomly chosen 5% of reflections, which were not used for structure refinement, and Rwork was calculated for the remaining.