8pix
Cryo EM structure of the type 3C polymorph of alpha-synuclein at low pH.
SAXS 散射曲线 SAXS Profile
P(r) 距离分布 P(r) Distribution
1. 结构基本信息 1. Structure Basics
| 条目编号 entry_id | 8pix |
| 沉积日期 deposition_date | 2023-06-22 |
| 结构标题 title | Cryo EM structure of the type 3C polymorph of alpha-synuclein at low pH. |
| 关键词 keywords | amyloid, polymorphism, PROTEIN FIBRIL; PROTEIN FIBRIL |
| 实验方法 method | ELECTRON MICROSCOPY |
2. SAXS 参数 (CRYSOL 理论计算) 2. SAXS Parameters (CRYSOL)
| 回转半径 Rg (Guinier) rg_guinier | 31.26 Å |
| 回转半径 Rg (电子) rg_electron | 31.15 Å |
| 零角强度 I(0) i0 | 62678400.00 |
| 分子量 molecular_weight | 64014.0 kDa |
| 排除体积 excluded_volume | 81224 ų |
| 包络体积 envelope_volume | 107500 ų |
| 水化壳体积 shell_volume | 29783 ų |
| 包络直径 envelope_diameter | 111.5 Å |
| 壳层 Rg shell_rg | 36.85 Å |
| 包络 Rg envelope_rg | 31.12 Å |
| 形状 Rg shape_rg | 31.11 Å |
| 总 Rg total_rg | 31.81 Å |
| 总原子数 total_atoms | 4500 |
| 残基数 n_residues | 650 |
| 球谐函数阶数 n_harmonics | 20 |
| q 范围 q_range | — – 0.5000 Å−1 |
| 数据点数 n_points | 101 |
| 壳层类型 shell_type | directional |
| 溶剂电子密度 solvent_density | 0.3340 e/ų |
| 壳层衬度 contrast_shell | 0.0300 e/ų |
| CRYSOL 版本 crysol_version | 4.1.3 |
3. P(r) 距离分布 (GNOM 反演) 3. P(r) Analysis (GNOM)
| 最大尺寸 Dmax dmax | 109.9 Å |
| Rg (实空间) rg_real | 31.51 Å |
| Rg 误差 (实空间) rg_real_error | 1.10 Å |
| I(0) (实空间) i0_real | 6.2680e+07 |
| I(0) 误差 (实空间) i0_real_error | 1.0890e+06 |
| Rg (倒空间) rg_reciprocal | 31.41 Å |
| I(0) (倒空间) i0_reciprocal | 62670000.0000 |
| 解质量估计 total_estimate | 0.6307 |
| 解质量评级 solution_quality | REASONABLE a REASONABLE solution |
| P(r) 峰数 n_peaks | 2 |
| 主峰位置 r_peak_primary | 32.3 Å |
| 偏度 Skewness skewness | 0.494 |
| 峰度 Kurtosis kurtosis | -0.323 |
| 角度范围 angular_range | — – 0.2550 Å−1 |
| 当前正则化参数 α current_alpha | 0.0000 |
| 最高正则化参数 α highest_alpha | 8409000.0000 |
| 实空间数据点数 n_real_points | 52 |
| GNOM 版本 gnom_version | 4.1.3 |
| 质量判据 quality_criteria | AN1: 0.000; Oscil: 0.768; Stabil: 1.000; Sysdev: 0.115; Positv: 1.000; Valcen: 0.674; Smooth: 0.871 |