National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)
GM128867
米国
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)
P41GM136508
米国
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)
GM136614
米国
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)
GM007185
米国
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)
AI143368
米国
Sao Paulo Research Foundation (FAPESP)
16/24191-8
米国
Sao Paulo Research Foundation (FAPESP)
17/13485-3
ブラジル
Spanish Ministry of Science, Innovation, and Universities
BES-2015-071397
米国
Spanish Ministry of Economy and Competitiveness
PGC2018-101370-B-100,
スペイン
Spanish Ministry of Economy and Competitiveness
MDM2014-0435-01
スペイン
Other government
2017SGR- 1192
スペイン
引用
ジャーナル: ACS Bio Med Chem Au / 年: 2023 タイトル: Fragment-Based Phasing of Peptidic Nanocrystals by MicroED. 著者: Logan S Richards / Maria D Flores / Claudia Millán / Calina Glynn / Chih-Te Zee / Michael R Sawaya / Marcus Gallagher-Jones / Rafael J Borges / Isabel Usón / Jose A Rodriguez / 要旨: Electron diffraction (MicroED/3DED) can render the three-dimensional atomic structures of molecules from previously unamenable samples. The approach has been particularly transformative for peptidic ...Electron diffraction (MicroED/3DED) can render the three-dimensional atomic structures of molecules from previously unamenable samples. The approach has been particularly transformative for peptidic structures, where MicroED has revealed novel structures of naturally occurring peptides, synthetic protein fragments, and peptide-based natural products. Despite its transformative potential, MicroED is beholden to the crystallographic phase problem, which challenges its determination of structures. ARCIMBOLDO, an automated, fragment-based approach to structure determination, eliminates the need for atomic resolution, instead enforcing stereochemical constraints through libraries of small model fragments, and discerning congruent motifs in solution space to ensure validation. This approach expands the reach of MicroED to presently inaccessible peptide structures including fragments of human amyloids, and yeast and mammalian prions. For electron diffraction, fragment-based phasing portends a more general phasing solution with limited model bias for a wider set of chemical structures.
電子線照射量: 0.05 e/Å2 フィルム・検出器のモデル: TVIPS TEMCAM-F416 (4k x 4k)
EM回折
カメラ長: 1000 mm
EM回折 シェル
解像度 (Å)
ID
EM diffraction stats-ID
フーリエ空間範囲 (%)
多重度
構造因子数
位相残差 (°)
7.7545-2.9695
1
1
77
3.54
103
0.01
2.9695-2.3794
2
1
77
4.46
75
0.01
2.3794-2.0853
3
1
80
3.02
101
0.01
2.0853-1.8977
4
1
81
4.18
94
0.01
1.8977-1.7634
5
1
80
4.37
81
0.01
1.7634-1.6605
6
1
84
4.46
79
0.01
1.6605-1.5781
7
1
78
3.93
72
0.01
1.5781-1.5099
8
1
88
4.08
99
0.01
1.5099-1.4522
9
1
84
4.87
95
0.01
1.4522-1.4024
10
1
85
4.17
97
0.01
EM回折 統計
詳細: Phase error and phase residual statistics are not routinely reported for crystallographic structures. No imaging was used. The phases were obtained by an ab initio crystallographic method ...詳細: Phase error and phase residual statistics are not routinely reported for crystallographic structures. No imaging was used. The phases were obtained by an ab initio crystallographic method described in our manuscript フーリエ空間範囲: 80 % / 再高解像度: 1.4 Å / 測定した強度の数: 4159 / 構造因子数: 986 / 位相誤差: 22.72 ° / 位相残差: 0.01 ° / 位相誤差の除外基準: 0 / Rmerge: 15.9 / Rsym: 15.9