2a5i
Crystal structures of SARS coronavirus main peptidase inhibited by an aza-peptide epoxide in the space group C2
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 | 2a5i |
| 沉积日期 deposition_date | 2005-06-30 |
| 结构标题 title | Crystal structures of SARS coronavirus main peptidase inhibited by an aza-peptide epoxide in the space group C2 |
| 关键词 keywords | ;cysteine peptidase, 3C-like, N-finger, chymotrypsin-like fold, long loop, alpha-helical domain, dimer, catalytic dyad, specificity pockets, aza-peptide epoxide, substrate-like inhibitor, C-S covalent bond, epoxide stereochemistry, HYdrolase ;; HYDROLASE |
| 实验方法 method | X-RAY DIFFRACTION |
2. SAXS 参数 (CRYSOL 理论计算) 2. SAXS Parameters (CRYSOL)
| 回转半径 Rg (Guinier) rg_guinier | 22.68 Å |
| 回转半径 Rg (电子) rg_electron | 22.01 Å |
| 零角强度 I(0) i0 | 21092300.00 |
| 分子量 molecular_weight | 34639.0 kDa |
| 排除体积 excluded_volume | 43192 ų |
| 包络体积 envelope_volume | 50481 ų |
| 水化壳体积 shell_volume | 20046 ų |
| 包络直径 envelope_diameter | 80.2 Å |
| 壳层 Rg shell_rg | 27.81 Å |
| 包络 Rg envelope_rg | 22.31 Å |
| 形状 Rg shape_rg | 22.00 Å |
| 总 Rg total_rg | 22.78 Å |
| 总原子数 total_atoms | 2427 |
| 残基数 n_residues | 306 |
| 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 | 78.8 Å |
| Rg (实空间) rg_real | 22.79 Å |
| Rg 误差 (实空间) rg_real_error | 0.64 Å |
| I(0) (实空间) i0_real | 2.1090e+07 |
| I(0) 误差 (实空间) i0_real_error | 3.0760e+05 |
| Rg (倒空间) rg_reciprocal | 22.77 Å |
| I(0) (倒空间) i0_reciprocal | 21090000.0000 |
| 解质量估计 total_estimate | 0.8421 |
| 解质量评级 solution_quality | GOOD a GOOD solution |
| P(r) 峰数 n_peaks | 2 |
| 主峰位置 r_peak_primary | 22.7 Å |
| 偏度 Skewness skewness | 0.491 |
| 峰度 Kurtosis kurtosis | -0.343 |
| 角度范围 angular_range | — – 0.3500 Å−1 |
| 当前正则化参数 α current_alpha | 0.0000 |
| 最高正则化参数 α highest_alpha | 8420000.0000 |
| 实空间数据点数 n_real_points | 67 |
| GNOM 版本 gnom_version | 4.1.3 |
| 质量判据 quality_criteria | AN1: 0.000; Oscil: 0.701; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.864; Smooth: 0.977 |
4. 晶体学与实验 4. Crystallography & Experiment
5. 实体与聚合体信息 (5)
6. 折叠分类 (SCOP + CATH) 4 domains
SCOP 2.08 (1 domains)
| 结构域编号 domain_id | d2a5ia_ |
| 类 Class class | b — All beta proteins |
| 折叠类型 Fold fold | b.47 — Trypsin-like serine proteases |
| 超家族 Superfamily superfamily | b.47.1 — Trypsin-like serine proteases |
| 家族 Family family | b.47.1.4 — Viral cysteine protease of trypsin fold |
CATH v4.4 (3 domains)
| 结构域编号 domain_id | 2a5iA01 |
| 类 Class class | 2 — Mainly Beta |
| 架构 Architecture architecture | 40 — Beta Barrel |
| 拓扑 Topology topology | 10 — Thrombin, subunit H |
| 同源超家族 H-superfamily homologous superfamily | 10 — Trypsin-like serine proteases |
| 结构域编号 domain_id | 2a5iA02 |
| 类 Class class | 2 — Mainly Beta |
| 架构 Architecture architecture | 40 — Beta Barrel |
| 拓扑 Topology topology | 10 — Thrombin, subunit H |
| 同源超家族 H-superfamily homologous superfamily | 10 — Trypsin-like serine proteases |
| 结构域编号 domain_id | 2a5iA03 |
| 类 Class class | 1 — Mainly Alpha |
| 架构 Architecture architecture | 10 — Orthogonal Bundle |
| 拓扑 Topology topology | 1840 — main proteinase (3clpro) structure, domain 3 |
| 同源超家族 H-superfamily homologous superfamily | 10 — main proteinase (3clpro) structure, domain 3 |