2cax
STRUCTURAL BASIS FOR COOPERATIVE BINDING OF RIBBON-HELIX-HELIX REPRESSOR OMEGA TO MUTATED DIRECT DNA HEPTAD REPEATS
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 | 2cax |
| 沉积日期 deposition_date | 2005-12-23 |
| 结构标题 title | STRUCTURAL BASIS FOR COOPERATIVE BINDING OF RIBBON-HELIX-HELIX REPRESSOR OMEGA TO MUTATED DIRECT DNA HEPTAD REPEATS |
| 关键词 keywords | ;TRANSCRIPTIONAL REPRESSOR, INC18 FAMILY OF PLASMIDS, RHH, METJ/ARC SUPERFAMILY, COOPERATIVE DNA BINDING, DNA HEPTAD 5'- A/T ATCAC A/T -3', PLASMID MAINTENANCE, DNA- BINDING, REGULATORY PROTEIN ;; TRANSCRIPTIONAL 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 | 31.50 Å |
| 回转半径 Rg (电子) rg_electron | 31.13 Å |
| 零角强度 I(0) i0 | 57056900.00 |
| 分子量 molecular_weight | 45253.0 kDa |
| 排除体积 excluded_volume | 50624 ų |
| 包络体积 envelope_volume | 72801 ų |
| 水化壳体积 shell_volume | 22929 ų |
| 包络直径 envelope_diameter | 117.4 Å |
| 壳层 Rg shell_rg | 32.26 Å |
| 包络 Rg envelope_rg | 32.26 Å |
| 形状 Rg shape_rg | 31.05 Å |
| 总 Rg total_rg | 31.41 Å |
| 总原子数 total_atoms | 3083 |
| 残基数 n_residues | 273 |
| 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 | 113.4 Å |
| Rg (实空间) rg_real | 32.32 Å |
| Rg 误差 (实空间) rg_real_error | 1.62 Å |
| I(0) (实空间) i0_real | 5.7060e+07 |
| I(0) 误差 (实空间) i0_real_error | 1.0550e+06 |
| Rg (倒空间) rg_reciprocal | 31.97 Å |
| I(0) (倒空间) i0_reciprocal | 57040000.0000 |
| 解质量估计 total_estimate | 0.5152 |
| 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 | 24.9 Å |
| 偏度 Skewness skewness | 0.769 |
| 峰度 Kurtosis kurtosis | -0.039 |
| 角度范围 angular_range | — – 0.2500 Å−1 |
| 当前正则化参数 α current_alpha | 0.0000 |
| 最高正则化参数 α highest_alpha | 2561000.0000 |
| 实空间数据点数 n_real_points | 51 |
| GNOM 版本 gnom_version | 4.1.3 |
| 质量判据 quality_criteria | AN1: 0.000; Oscil: 0.478; Stabil: 1.000; Sysdev: 0.169; Positv: 1.000; Valcen: 0.303; Smooth: 0.449 |
4. 晶体学与实验 4. Crystallography & Experiment
5. 实体与聚合体信息 (6)
6. 折叠分类 (SCOP + CATH) 10 domains
SCOP 2.08 (6 domains)
| 结构域编号 domain_id | d2caxa2 |
| 类 Class class | a — All alpha proteins |
| 折叠类型 Fold fold | a.43 — Ribbon-helix-helix |
| 超家族 Superfamily superfamily | a.43.1 — Ribbon-helix-helix |
| 家族 Family family | a.43.1.4 — Omega transcriptional repressor |
| 结构域编号 domain_id | d2caxa3 |
| 类 Class class | l — Artifacts |
| 折叠类型 Fold fold | l.1 — Tags |
| 超家族 Superfamily superfamily | l.1.1 — Tags |
| 家族 Family family | l.1.1.1 — Tags |
| 结构域编号 domain_id | d2caxb_ |
| 类 Class class | a — All alpha proteins |
| 折叠类型 Fold fold | a.43 — Ribbon-helix-helix |
| 超家族 Superfamily superfamily | a.43.1 — Ribbon-helix-helix |
| 家族 Family family | a.43.1.4 — Omega transcriptional repressor |
| 结构域编号 domain_id | d2caxc2 |
| 类 Class class | a — All alpha proteins |
| 折叠类型 Fold fold | a.43 — Ribbon-helix-helix |
| 超家族 Superfamily superfamily | a.43.1 — Ribbon-helix-helix |
| 家族 Family family | a.43.1.4 — Omega transcriptional repressor |
| 结构域编号 domain_id | d2caxc3 |
| 类 Class class | l — Artifacts |
| 折叠类型 Fold fold | l.1 — Tags |
| 超家族 Superfamily superfamily | l.1.1 — Tags |
| 家族 Family family | l.1.1.1 — Tags |
| 结构域编号 domain_id | d2caxd_ |
| 类 Class class | a — All alpha proteins |
| 折叠类型 Fold fold | a.43 — Ribbon-helix-helix |
| 超家族 Superfamily superfamily | a.43.1 — Ribbon-helix-helix |
| 家族 Family family | a.43.1.4 — Omega transcriptional repressor |
CATH v4.4 (4 domains)
| 结构域编号 domain_id | 2caxA00 |
| 类 Class class | 1 — Mainly Alpha |
| 架构 Architecture architecture | 10 — Orthogonal Bundle |
| 拓扑 Topology topology | 1220 — Arc Repressor Mutant |
| 同源超家族 H-superfamily homologous superfamily | 10 — Met repressor-like |
| 结构域编号 domain_id | 2caxB00 |
| 类 Class class | 1 — Mainly Alpha |
| 架构 Architecture architecture | 10 — Orthogonal Bundle |
| 拓扑 Topology topology | 1220 — Arc Repressor Mutant |
| 同源超家族 H-superfamily homologous superfamily | 10 — Met repressor-like |
| 结构域编号 domain_id | 2caxC00 |
| 类 Class class | 1 — Mainly Alpha |
| 架构 Architecture architecture | 10 — Orthogonal Bundle |
| 拓扑 Topology topology | 1220 — Arc Repressor Mutant |
| 同源超家族 H-superfamily homologous superfamily | 10 — Met repressor-like |
| 结构域编号 domain_id | 2caxD00 |
| 类 Class class | 1 — Mainly Alpha |
| 架构 Architecture architecture | 10 — Orthogonal Bundle |
| 拓扑 Topology topology | 1220 — Arc Repressor Mutant |
| 同源超家族 H-superfamily homologous superfamily | 10 — Met repressor-like |