2f6b
;Structural and active site modification studies implicate Glu, Trp and Arg in the activity of xylanase from alkalophilic Bacillus sp. (NCL 87-6-10). ;
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 | 2f6b |
| 沉积日期 deposition_date | 2005-11-29 |
| 结构标题 title | ;Structural and active site modification studies implicate Glu, Trp and Arg in the activity of xylanase from alkalophilic Bacillus sp. (NCL 87-6-10). ; |
| 关键词 keywords | Alkaline xylanase, Active site residues, Chemical modification, Three-dimentional structure., 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 | 24.32 Å |
| 回转半径 Rg (电子) rg_electron | 23.46 Å |
| 零角强度 I(0) i0 | 37531000.00 |
| 分子量 molecular_weight | 45839.0 kDa |
| 排除体积 excluded_volume | 56631 ų |
| 包络体积 envelope_volume | 65765 ų |
| 水化壳体积 shell_volume | 23939 ų |
| 包络直径 envelope_diameter | 82.8 Å |
| 壳层 Rg shell_rg | 29.83 Å |
| 包络 Rg envelope_rg | 23.37 Å |
| 形状 Rg shape_rg | 23.40 Å |
| 总 Rg total_rg | 24.37 Å |
| 总原子数 total_atoms | 3238 |
| 残基数 n_residues | 412 |
| 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 | 80.3 Å |
| Rg (实空间) rg_real | 24.38 Å |
| Rg 误差 (实空间) rg_real_error | 0.45 Å |
| I(0) (实空间) i0_real | 3.7530e+07 |
| I(0) 误差 (实空间) i0_real_error | 5.3930e+05 |
| Rg (倒空间) rg_reciprocal | 24.37 Å |
| I(0) (倒空间) i0_reciprocal | 37530000.0000 |
| 解质量估计 total_estimate | 0.6759 |
| 解质量评级 solution_quality | REASONABLE a REASONABLE solution |
| P(r) 峰数 n_peaks | 1 |
| 主峰位置 r_peak_primary | 25.5 Å |
| 偏度 Skewness skewness | 0.411 |
| 峰度 Kurtosis kurtosis | -0.426 |
| 角度范围 angular_range | — – 0.3250 Å−1 |
| 当前正则化参数 α current_alpha | 0.0002 |
| 最高正则化参数 α highest_alpha | 10110000.0000 |
| 实空间数据点数 n_real_points | 64 |
| GNOM 版本 gnom_version | 4.1.3 |
| 质量判据 quality_criteria | AN1: 0.000; Oscil: 0.816; Stabil: 1.000; Sysdev: 0.137; Positv: 1.000; Valcen: 0.936; Smooth: 0.989 |
4. 晶体学与实验 4. Crystallography & Experiment
5. 实体与聚合体信息 (2)
6. 折叠分类 (SCOP + CATH) 2 domains
CATH v4.4 (2 domains)
| 结构域编号 domain_id | 2f6bA00 |
| 类 Class class | 2 — Mainly Beta |
| 架构 Architecture architecture | 60 — Sandwich |
| 拓扑 Topology topology | 120 — Jelly Rolls |
| 同源超家族 H-superfamily homologous superfamily | 180 — Glycoside hydrolase family 11/12, catalytic domain |
| 结构域编号 domain_id | 2f6bB00 |
| 类 Class class | 2 — Mainly Beta |
| 架构 Architecture architecture | 60 — Sandwich |
| 拓扑 Topology topology | 120 — Jelly Rolls |
| 同源超家族 H-superfamily homologous superfamily | 180 — Glycoside hydrolase family 11/12, catalytic domain |