21fj
Cryo-EM structure of DddT in closed substrate-free conformation in the presence of potassium ions and dimethylsulfoniopropionate
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 | 21fj |
| 沉积日期 deposition_date | 2025-12-11 |
| 结构标题 title | Cryo-EM structure of DddT in closed substrate-free conformation in the presence of potassium ions and dimethylsulfoniopropionate |
| 关键词 keywords | ;Trimer, Psychrobacter sp. D2, Dimethylsulfoniopropionate transporter, Closed substrate-free conformation in the presence of potassium ions and dimethylsulfoniopropionate, TRANSPORT PROTEIN ;; TRANSPORT PROTEIN |
| 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 | 23.98 Å |
| 回转半径 Rg (电子) rg_electron | 22.74 Å |
| 零角强度 I(0) i0 | 38988900.00 |
| 分子量 molecular_weight | 54616.0 kDa |
| 排除体积 excluded_volume | 71025 ų |
| 包络体积 envelope_volume | 84286 ų |
| 水化壳体积 shell_volume | 29960 ų |
| 包络直径 envelope_diameter | 75.7 Å |
| 壳层 Rg shell_rg | 30.64 Å |
| 包络 Rg envelope_rg | 22.82 Å |
| 形状 Rg shape_rg | 22.71 Å |
| 总 Rg total_rg | 23.90 Å |
| 总原子数 total_atoms | 3863 |
| 残基数 n_residues | 500 |
| 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 | 72.8 Å |
| Rg (实空间) rg_real | 23.82 Å |
| Rg 误差 (实空间) rg_real_error | 0.43 Å |
| I(0) (实空间) i0_real | 3.8990e+07 |
| I(0) 误差 (实空间) i0_real_error | 5.2890e+05 |
| Rg (倒空间) rg_reciprocal | 23.86 Å |
| I(0) (倒空间) i0_reciprocal | 38990000.0000 |
| 解质量估计 total_estimate | 0.9064 |
| 解质量评级 solution_quality | EXCELLENT a EXCELLENT solution |
| P(r) 峰数 n_peaks | 2 |
| 主峰位置 r_peak_primary | 30.7 Å |
| 偏度 Skewness skewness | 0.153 |
| 峰度 Kurtosis kurtosis | -0.446 |
| 角度范围 angular_range | — – 0.3300 Å−1 |
| 当前正则化参数 α current_alpha | 0.0000 |
| 最高正则化参数 α highest_alpha | 11980000.0000 |
| 实空间数据点数 n_real_points | 65 |
| GNOM 版本 gnom_version | 4.1.3 |
| 质量判据 quality_criteria | AN1: 0.000; Oscil: 0.933; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.987; Smooth: 0.994 |