1kx3
X-Ray Structure of the Nucleosome Core Particle, NCP146, at 2.0 A Resolution
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 | 1kx3 |
| 沉积日期 deposition_date | 2002-01-31 |
| 结构标题 title | X-Ray Structure of the Nucleosome Core Particle, NCP146, at 2.0 A Resolution |
| 关键词 keywords | ;NUCLEOSOME, CHROMATIN, HISTONE, PROTEIN-DNA INTERACTION, NUCLEOPROTEIN, SUPERCOILED DNA, NUCLEOSOME CORE, PROTEIN-DNA COMPLEX, STRUCTURAL PROTEIN-DNA COMPLEX ;; STRUCTURAL PROTEIN/DNA |
| 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 | 39.75 Å |
| 回转半径 Rg (电子) rg_electron | 37.04 Å |
| 零角强度 I(0) i0 | 840181000.00 |
| 分子量 molecular_weight | 177540.0 kDa |
| 排除体积 excluded_volume | 197130 ų |
| 包络体积 envelope_volume | 288620 ų |
| 水化壳体积 shell_volume | 62878 ų |
| 包络直径 envelope_diameter | 118.9 Å |
| 壳层 Rg shell_rg | 44.99 Å |
| 包络 Rg envelope_rg | 36.59 Å |
| 形状 Rg shape_rg | 36.86 Å |
| 总 Rg total_rg | 37.78 Å |
| 总原子数 total_atoms | 12080 |
| 残基数 n_residues | 1058 |
| 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 | 113.3 Å |
| Rg (实空间) rg_real | 39.48 Å |
| Rg 误差 (实空间) rg_real_error | 0.62 Å |
| I(0) (实空间) i0_real | 8.4020e+08 |
| I(0) 误差 (实空间) i0_real_error | 1.3840e+07 |
| Rg (倒空间) rg_reciprocal | 39.65 Å |
| I(0) (倒空间) i0_reciprocal | 840300000.0000 |
| 解质量估计 total_estimate | 0.8724 |
| 解质量评级 solution_quality | GOOD a GOOD solution |
| P(r) 峰数 n_peaks | 1 |
| 主峰位置 r_peak_primary | 45.3 Å |
| 偏度 Skewness skewness | 0.083 |
| 峰度 Kurtosis kurtosis | -0.698 |
| 角度范围 angular_range | — – 0.2000 Å−1 |
| 当前正则化参数 α current_alpha | 0.0000 |
| 最高正则化参数 α highest_alpha | 67150000.0000 |
| 实空间数据点数 n_real_points | 41 |
| GNOM 版本 gnom_version | 4.1.3 |
| 质量判据 quality_criteria | AN1: 0.000; Oscil: 0.993; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.991; Smooth: 0.367 |
4. 晶体学与实验 4. Crystallography & Experiment
5. 实体与聚合体信息 (7)
6. 折叠分类 (SCOP + CATH) 16 domains
SCOP 2.08 (8 domains)
| 结构域编号 domain_id | d1kx3a_ |
| 类 Class class | a — All alpha proteins |
| 折叠类型 Fold fold | a.22 — Histone-fold |
| 超家族 Superfamily superfamily | a.22.1 — Histone-fold |
| 家族 Family family | a.22.1.1 — Nucleosome core histones |
| 结构域编号 domain_id | d1kx3b_ |
| 类 Class class | a — All alpha proteins |
| 折叠类型 Fold fold | a.22 — Histone-fold |
| 超家族 Superfamily superfamily | a.22.1 — Histone-fold |
| 家族 Family family | a.22.1.1 — Nucleosome core histones |
| 结构域编号 domain_id | d1kx3c_ |
| 类 Class class | a — All alpha proteins |
| 折叠类型 Fold fold | a.22 — Histone-fold |
| 超家族 Superfamily superfamily | a.22.1 — Histone-fold |
| 家族 Family family | a.22.1.1 — Nucleosome core histones |
| 结构域编号 domain_id | d1kx3d_ |
| 类 Class class | a — All alpha proteins |
| 折叠类型 Fold fold | a.22 — Histone-fold |
| 超家族 Superfamily superfamily | a.22.1 — Histone-fold |
| 家族 Family family | a.22.1.1 — Nucleosome core histones |
| 结构域编号 domain_id | d1kx3e_ |
| 类 Class class | a — All alpha proteins |
| 折叠类型 Fold fold | a.22 — Histone-fold |
| 超家族 Superfamily superfamily | a.22.1 — Histone-fold |
| 家族 Family family | a.22.1.1 — Nucleosome core histones |
| 结构域编号 domain_id | d1kx3f_ |
| 类 Class class | a — All alpha proteins |
| 折叠类型 Fold fold | a.22 — Histone-fold |
| 超家族 Superfamily superfamily | a.22.1 — Histone-fold |
| 家族 Family family | a.22.1.1 — Nucleosome core histones |
| 结构域编号 domain_id | d1kx3g_ |
| 类 Class class | a — All alpha proteins |
| 折叠类型 Fold fold | a.22 — Histone-fold |
| 超家族 Superfamily superfamily | a.22.1 — Histone-fold |
| 家族 Family family | a.22.1.1 — Nucleosome core histones |
| 结构域编号 domain_id | d1kx3h_ |
| 类 Class class | a — All alpha proteins |
| 折叠类型 Fold fold | a.22 — Histone-fold |
| 超家族 Superfamily superfamily | a.22.1 — Histone-fold |
| 家族 Family family | a.22.1.1 — Nucleosome core histones |
CATH v4.4 (8 domains)
| 结构域编号 domain_id | 1kx3A00 |
| 类 Class class | 1 — Mainly Alpha |
| 架构 Architecture architecture | 10 — Orthogonal Bundle |
| 拓扑 Topology topology | 20 — Histone, subunit A |
| 同源超家族 H-superfamily homologous superfamily | 10 — Histone, subunit A |
| 结构域编号 domain_id | 1kx3B00 |
| 类 Class class | 1 — Mainly Alpha |
| 架构 Architecture architecture | 10 — Orthogonal Bundle |
| 拓扑 Topology topology | 20 — Histone, subunit A |
| 同源超家族 H-superfamily homologous superfamily | 10 — Histone, subunit A |
| 结构域编号 domain_id | 1kx3C00 |
| 类 Class class | 1 — Mainly Alpha |
| 架构 Architecture architecture | 10 — Orthogonal Bundle |
| 拓扑 Topology topology | 20 — Histone, subunit A |
| 同源超家族 H-superfamily homologous superfamily | 10 — Histone, subunit A |
| 结构域编号 domain_id | 1kx3D00 |
| 类 Class class | 1 — Mainly Alpha |
| 架构 Architecture architecture | 10 — Orthogonal Bundle |
| 拓扑 Topology topology | 20 — Histone, subunit A |
| 同源超家族 H-superfamily homologous superfamily | 10 — Histone, subunit A |
| 结构域编号 domain_id | 1kx3E00 |
| 类 Class class | 1 — Mainly Alpha |
| 架构 Architecture architecture | 10 — Orthogonal Bundle |
| 拓扑 Topology topology | 20 — Histone, subunit A |
| 同源超家族 H-superfamily homologous superfamily | 10 — Histone, subunit A |
| 结构域编号 domain_id | 1kx3F00 |
| 类 Class class | 1 — Mainly Alpha |
| 架构 Architecture architecture | 10 — Orthogonal Bundle |
| 拓扑 Topology topology | 20 — Histone, subunit A |
| 同源超家族 H-superfamily homologous superfamily | 10 — Histone, subunit A |
| 结构域编号 domain_id | 1kx3G00 |
| 类 Class class | 1 — Mainly Alpha |
| 架构 Architecture architecture | 10 — Orthogonal Bundle |
| 拓扑 Topology topology | 20 — Histone, subunit A |
| 同源超家族 H-superfamily homologous superfamily | 10 — Histone, subunit A |
| 结构域编号 domain_id | 1kx3H00 |
| 类 Class class | 1 — Mainly Alpha |
| 架构 Architecture architecture | 10 — Orthogonal Bundle |
| 拓扑 Topology topology | 20 — Histone, subunit A |
| 同源超家族 H-superfamily homologous superfamily | 10 — Histone, subunit A |