2isz

Crystal structure of a two-domain IdeR-DNA complex crystal form I

Method: X-RAY DIFFRACTION Dmax: 107.5 Å Quality: GOOD

1. 蛋白身份与相关结构 Protein Identity & Related Structures

Iron-dependent repressor ideR

Mycobacterium tuberculosis

UniProt P0A672

当前结构中的状态

Assembly 聚集状态 构建体 突变与修饰 配体、离子与共同组分 实验方法与环境 结构质量
1 蛋白–DNA 同源多聚体 蛋白 × 4 DNA 2 PDB 声明:hexameric(6) 与全部聚合物数一致 链 A; UniProt 1–140 链 B; UniProt 1–140 链 C; UniProt 1–140 链 D; UniProt 1–140 未记录 mbtA/mbtB operator strand 1 × 1 mbtA/mbtB operator strand 2 × 1 NI NICKEL (II) ION × 12 NA SODIUM ION × 3 X-RAY DIFFRACTION X-ray结晶条件:VAPOR DIFFUSION, SITTING DROP;pH 7.5;298 K;28% PEG 3350, 0.2 M ammonium acetate, 0.1 M Bis-Tris pH 7.5, VAPOR DIFFUSION, SITTING DROP, temperature 298K 分辨率 2.40 Å R-free 0.239

数据库中的同蛋白其他状态

以下每一行都是同一 UniProt 蛋白在另一个 PDB 条目中的 biological assembly, “相对当前条目”直接指出证据层面的不同;没有差异标签表示当前已读取字段一致。

共 5 个其他 PDB 条目、10 个 assembly。 打开独立比较页并筛选聚集状态

查看构建体与数据证据
UniProt名称 IDER_MYCTU
Isoform
PDB实体 3
链与序列区间 作者链 A; PDB构建体 1–140; UniProt 1–140 作者链 B; PDB构建体 1–140; UniProt 1–140 作者链 C; PDB构建体 1–140; UniProt 1–140 作者链 D; PDB构建体 1–140; UniProt 1–140

页面优先展示蛋白身份、当前 assembly、共同组分、聚集状态和跨 PDB 结构链接。 链映射与序列区间收在“数据证据”中;数据库内部编号、导入时间和 assembly 操作表达式仅用于维护,因此不在读者页面展示。

SAXS 散射曲线 SAXS Profile

SAXS profile for 2isz

P(r) 距离分布 P(r) Distribution

P(r) distribution for 2isz
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2. 结构基本信息 2. Structure Basics

条目编号 entry_id2isz
沉积日期 deposition_date2006-10-18
结构标题 titleCrystal structure of a two-domain IdeR-DNA complex crystal form I
关键词 keywordsDNA-binding protein, TRANSCRIPTION-DNA COMPLEX; TRANSCRIPTION/DNA
实验方法 methodX-RAY DIFFRACTION

3. SAXS 参数 (CRYSOL 理论计算) 3. SAXS Parameters (CRYSOL)

回转半径 Rg (Guinier) rg_guinier32.35
回转半径 Rg (电子) rg_electron32.19
零角强度 I(0) i0156932000.00
分子量 molecular_weight84428.0 kDa
排除体积 excluded_volume98985 ų
包络体积 envelope_volume132250 ų
水化壳体积 shell_volume34688 ų
包络直径 envelope_diameter113.1
壳层 Rg shell_rg38.48
包络 Rg envelope_rg31.95
形状 Rg shape_rg32.23
总 Rg total_rg32.52
总原子数 total_atoms5802
残基数 n_residues626
球谐函数阶数 n_harmonics20
q 范围 q_range— – 0.5000 −1
数据点数 n_points101
壳层类型 shell_typedirectional
溶剂电子密度 solvent_density0.3340 e/ų
壳层衬度 contrast_shell0.0300 e/ų
CRYSOL 版本 crysol_version4.1.3

4. P(r) 距离分布 (GNOM 反演) 4. P(r) Analysis (GNOM)

最大尺寸 Dmax dmax107.5
Rg (实空间) rg_real32.35
Rg 误差 (实空间) rg_real_error0.95
I(0) (实空间) i0_real1.5690e+08
I(0) 误差 (实空间) i0_real_error2.7230e+06
Rg (倒空间) rg_reciprocal32.35
I(0) (倒空间) i0_reciprocal156900000.0000
解质量估计 total_estimate0.8930
解质量评级 solution_quality GOOD a GOOD solution
P(r) 峰数 n_peaks2
主峰位置 r_peak_primary39.5
偏度 Skewness skewness0.269
峰度 Kurtosis kurtosis-0.515
角度范围 angular_range— – 0.2450 −1
当前正则化参数 α current_alpha0.0000
最高正则化参数 α highest_alpha15520000.0000
实空间数据点数 n_real_points50
GNOM 版本 gnom_version4.1.3
质量判据 quality_criteria AN1: 0.000; Oscil: 0.914; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.969; Smooth: 0.894

5. 晶体学与实验 5. Crystallography & Experiment

6. 实体与聚合物信息 Entities & Polymers (6)

7. 折叠分类 (SCOP + CATH) 16 domains

SCOP 2.08 (8 domains)

结构域编号 domain_idd2isza1
类 Class classa — All alpha proteins
折叠类型 Fold folda.4 — DNA/RNA-binding 3-helical bundle
超家族 Superfamily superfamilya.4.5 — 'Winged helix' DNA-binding domain
家族 Family familya.4.5.24 — Iron-dependent repressor protein
结构域编号 domain_idd2isza2
类 Class classa — All alpha proteins
折叠类型 Fold folda.76 — Iron-dependent repressor protein, dimerization domain
超家族 Superfamily superfamilya.76.1 — Iron-dependent repressor protein, dimerization domain
家族 Family familya.76.1.1 — Iron-dependent repressor protein, dimerization domain
结构域编号 domain_idd2iszb1
类 Class classa — All alpha proteins
折叠类型 Fold folda.4 — DNA/RNA-binding 3-helical bundle
超家族 Superfamily superfamilya.4.5 — 'Winged helix' DNA-binding domain
家族 Family familya.4.5.24 — Iron-dependent repressor protein
结构域编号 domain_idd2iszb2
类 Class classa — All alpha proteins
折叠类型 Fold folda.76 — Iron-dependent repressor protein, dimerization domain
超家族 Superfamily superfamilya.76.1 — Iron-dependent repressor protein, dimerization domain
家族 Family familya.76.1.1 — Iron-dependent repressor protein, dimerization domain
结构域编号 domain_idd2iszc1
类 Class classa — All alpha proteins
折叠类型 Fold folda.4 — DNA/RNA-binding 3-helical bundle
超家族 Superfamily superfamilya.4.5 — 'Winged helix' DNA-binding domain
家族 Family familya.4.5.24 — Iron-dependent repressor protein
结构域编号 domain_idd2iszc2
类 Class classa — All alpha proteins
折叠类型 Fold folda.76 — Iron-dependent repressor protein, dimerization domain
超家族 Superfamily superfamilya.76.1 — Iron-dependent repressor protein, dimerization domain
家族 Family familya.76.1.1 — Iron-dependent repressor protein, dimerization domain
结构域编号 domain_idd2iszd1
类 Class classa — All alpha proteins
折叠类型 Fold folda.4 — DNA/RNA-binding 3-helical bundle
超家族 Superfamily superfamilya.4.5 — 'Winged helix' DNA-binding domain
家族 Family familya.4.5.24 — Iron-dependent repressor protein
结构域编号 domain_idd2iszd2
类 Class classa — All alpha proteins
折叠类型 Fold folda.76 — Iron-dependent repressor protein, dimerization domain
超家族 Superfamily superfamilya.76.1 — Iron-dependent repressor protein, dimerization domain
家族 Family familya.76.1.1 — Iron-dependent repressor protein, dimerization domain

CATH v4.4 (8 domains)

结构域编号 domain_id2iszA01
类 Class class1 — Mainly Alpha
架构 Architecture architecture10 — Orthogonal Bundle
拓扑 Topology topology10 — Arc Repressor Mutant, subunit A
同源超家族 H-superfamily homologous superfamily10 — Winged helix-like DNA-binding domain superfamily/Winged helix DNA-binding domain
结构域编号 domain_id2iszA02
类 Class class1 — Mainly Alpha
架构 Architecture architecture10 — Orthogonal Bundle
拓扑 Topology topology60 — Diphtheria Toxin Repressor; domain 2
同源超家族 H-superfamily homologous superfamily10 — Iron dependent repressor, metal binding and dimerisation domain
结构域编号 domain_id2iszB01
类 Class class1 — Mainly Alpha
架构 Architecture architecture10 — Orthogonal Bundle
拓扑 Topology topology10 — Arc Repressor Mutant, subunit A
同源超家族 H-superfamily homologous superfamily10 — Winged helix-like DNA-binding domain superfamily/Winged helix DNA-binding domain
结构域编号 domain_id2iszB02
类 Class class1 — Mainly Alpha
架构 Architecture architecture10 — Orthogonal Bundle
拓扑 Topology topology60 — Diphtheria Toxin Repressor; domain 2
同源超家族 H-superfamily homologous superfamily10 — Iron dependent repressor, metal binding and dimerisation domain
结构域编号 domain_id2iszC01
类 Class class1 — Mainly Alpha
架构 Architecture architecture10 — Orthogonal Bundle
拓扑 Topology topology10 — Arc Repressor Mutant, subunit A
同源超家族 H-superfamily homologous superfamily10 — Winged helix-like DNA-binding domain superfamily/Winged helix DNA-binding domain
结构域编号 domain_id2iszC02
类 Class class1 — Mainly Alpha
架构 Architecture architecture10 — Orthogonal Bundle
拓扑 Topology topology60 — Diphtheria Toxin Repressor; domain 2
同源超家族 H-superfamily homologous superfamily10 — Iron dependent repressor, metal binding and dimerisation domain
结构域编号 domain_id2iszD01
类 Class class1 — Mainly Alpha
架构 Architecture architecture10 — Orthogonal Bundle
拓扑 Topology topology10 — Arc Repressor Mutant, subunit A
同源超家族 H-superfamily homologous superfamily10 — Winged helix-like DNA-binding domain superfamily/Winged helix DNA-binding domain
结构域编号 domain_id2iszD02
类 Class class1 — Mainly Alpha
架构 Architecture architecture10 — Orthogonal Bundle
拓扑 Topology topology60 — Diphtheria Toxin Repressor; domain 2
同源超家族 H-superfamily homologous superfamily10 — Iron dependent repressor, metal binding and dimerisation domain

8. 引用文献 (1)

9. 文件与曲线 (10)