1r1t
Crystal structure of the cyanobacterial metallothionein repressor SmtB in the apo-form
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 | 1r1t |
| 沉积日期 deposition_date | 2003-09-25 |
| 结构标题 title | Crystal structure of the cyanobacterial metallothionein repressor SmtB in the apo-form |
| 关键词 keywords | Zinc, transcriptional regulation, winged HTH protein, DNA binding, TRANSCRIPTION REPRESSOR; TRANSCRIPTION REPRESSOR |
| 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 | 20.38 Å |
| 回转半径 Rg (电子) rg_electron | 19.17 Å |
| 零角强度 I(0) i0 | 9000200.00 |
| 分子量 molecular_weight | 22046.0 kDa |
| 排除体积 excluded_volume | 27629 ų |
| 包络体积 envelope_volume | 33231 ų |
| 水化壳体积 shell_volume | 15565 ų |
| 包络直径 envelope_diameter | 80.8 Å |
| 壳层 Rg shell_rg | 24.40 Å |
| 包络 Rg envelope_rg | 19.74 Å |
| 形状 Rg shape_rg | 19.13 Å |
| 总 Rg total_rg | 20.12 Å |
| 总原子数 total_atoms | 1556 |
| 残基数 n_residues | 197 |
| 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 | 79.7 Å |
| Rg (实空间) rg_real | 20.51 Å |
| Rg 误差 (实空间) rg_real_error | 0.82 Å |
| I(0) (实空间) i0_real | 9.0000e+06 |
| I(0) 误差 (实空间) i0_real_error | 1.4340e+05 |
| Rg (倒空间) rg_reciprocal | 20.49 Å |
| I(0) (倒空间) i0_reciprocal | 9000000.0000 |
| 解质量估计 total_estimate | 0.5987 |
| 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 | 20.5 Å |
| 偏度 Skewness skewness | 0.574 |
| 峰度 Kurtosis kurtosis | -0.013 |
| 角度范围 angular_range | — – 0.3900 Å−1 |
| 当前正则化参数 α current_alpha | 0.0000 |
| 最高正则化参数 α highest_alpha | 2835000.0000 |
| 实空间数据点数 n_real_points | 71 |
| GNOM 版本 gnom_version | 4.1.3 |
| 质量判据 quality_criteria | AN1: 0.000; Oscil: 0.384; Stabil: 1.000; Sysdev: 0.319; Positv: 1.000; Valcen: 0.669; Smooth: 0.999 |
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) 4 domains
SCOP 2.08 (2 domains)
| 结构域编号 domain_id | d1r1ta_ |
| 类 Class class | a — All alpha proteins |
| 折叠类型 Fold fold | a.4 — DNA/RNA-binding 3-helical bundle |
| 超家族 Superfamily superfamily | a.4.5 — 'Winged helix' DNA-binding domain |
| 家族 Family family | a.4.5.5 — ArsR-like transcriptional regulators |
| 结构域编号 domain_id | d1r1tb_ |
| 类 Class class | a — All alpha proteins |
| 折叠类型 Fold fold | a.4 — DNA/RNA-binding 3-helical bundle |
| 超家族 Superfamily superfamily | a.4.5 — 'Winged helix' DNA-binding domain |
| 家族 Family family | a.4.5.5 — ArsR-like transcriptional regulators |
CATH v4.4 (2 domains)
| 结构域编号 domain_id | 1r1tA00 |
| 类 Class class | 1 — Mainly Alpha |
| 架构 Architecture architecture | 10 — Orthogonal Bundle |
| 拓扑 Topology topology | 10 — Arc Repressor Mutant, subunit A |
| 同源超家族 H-superfamily homologous superfamily | 10 — Winged helix-like DNA-binding domain superfamily/Winged helix DNA-binding domain |
| 结构域编号 domain_id | 1r1tB00 |
| 类 Class class | 1 — Mainly Alpha |
| 架构 Architecture architecture | 10 — Orthogonal Bundle |
| 拓扑 Topology topology | 10 — Arc Repressor Mutant, subunit A |
| 同源超家族 H-superfamily homologous superfamily | 10 — Winged helix-like DNA-binding domain superfamily/Winged helix DNA-binding domain |