2ajq

Structure of replicative DNA polymerase provides insigts into the mechanisms for processivity, frameshifting and editing

Method: X-RAY DIFFRACTION Dmax: 135.4 Å Quality: REASONABLE

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

T7 DNA polymerase

Enterobacteria phage T7

UniProt P00581

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 异源复合物 蛋白 × 2 DNA 2 PDB 声明:tetrameric(4) 与全部聚合物数一致 链 A; UniProt 1–704 突变:Residues 5 and 7 mutated to Ala DNA Primer × 1 DNA Template × 1 thioredoxin 1 × 1 (P0AA25) X-RAY DIFFRACTION X-ray结晶条件:VAPOR DIFFUSION, HANGING DROP;pH 7.5;273 K;A complex of 1x10^-4 M T7 DNA polymerase 5A7A:thioredoxin was assembled with an equimolar amount of double stranded DNA substrate. Crystallization was achieved using a buffer containing 50mM HEPES pH 7.5, 10mM MgCl_2, 2mM DTT, and 0.5 mM terminal ddTTP Seed crystals were grown by hanging drop vapor diffusion by mixing 1ul each of protein-DNA solution and a reservoir solutions containing between 16 to 20% PEG 8000, 100mM ACES pH 7.5, 120 ammonium sulfate, 30mM MgCl2, and 5mM DTT. These crystals were used to streak-seed a grid of protein/reservoir solutions with concentrations of PEG 8000 between 13 to 15%. Pyramidal crystals appeared overnight and reached a maximum size of ~150 X 150 X 100 um3 after 3 to 4 days. Crystals were harvested overnight in mother-liquor containing 10 % PEG 400, temperature 273K, VAPOR DIFFUSION, HANGING DROP 分辨率 2.60 Å R-free 0.284
2 蛋白–DNA 异源复合物 蛋白 × 2 DNA 2 PDB 声明:tetrameric(4) 与全部聚合物数一致 链 F; UniProt 1–704 突变:Residues 5 and 7 mutated to Ala DNA Primer × 1 DNA Template × 1 thioredoxin 1 × 1 (P0AA25) X-RAY DIFFRACTION X-ray结晶条件:VAPOR DIFFUSION, HANGING DROP;pH 7.5;273 K;A complex of 1x10^-4 M T7 DNA polymerase 5A7A:thioredoxin was assembled with an equimolar amount of double stranded DNA substrate. Crystallization was achieved using a buffer containing 50mM HEPES pH 7.5, 10mM MgCl_2, 2mM DTT, and 0.5 mM terminal ddTTP Seed crystals were grown by hanging drop vapor diffusion by mixing 1ul each of protein-DNA solution and a reservoir solutions containing between 16 to 20% PEG 8000, 100mM ACES pH 7.5, 120 ammonium sulfate, 30mM MgCl2, and 5mM DTT. These crystals were used to streak-seed a grid of protein/reservoir solutions with concentrations of PEG 8000 between 13 to 15%. Pyramidal crystals appeared overnight and reached a maximum size of ~150 X 150 X 100 um3 after 3 to 4 days. Crystals were harvested overnight in mother-liquor containing 10 % PEG 400, temperature 273K, VAPOR DIFFUSION, HANGING DROP 分辨率 2.60 Å R-free 0.284

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 23 个其他 PDB 条目、27 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 DPOL_BPT7
Isoform
PDB实体 3
链与序列区间 作者链 A; PDB构建体 1–704; UniProt 1–704 作者链 F; PDB构建体 1–704; UniProt 1–704

thioredoxin 1

Escherichia coli

UniProt P0AA25

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 异源复合物 蛋白 × 2 DNA 2 PDB 声明:tetrameric(4) 与全部聚合物数一致 链 B; UniProt 1–108 突变:Residues 5 and 7 mutated to Ala DNA Primer × 1 DNA Template × 1 T7 DNA polymerase × 1 (P00581) X-RAY DIFFRACTION X-ray结晶条件:VAPOR DIFFUSION, HANGING DROP;pH 7.5;273 K;A complex of 1x10^-4 M T7 DNA polymerase 5A7A:thioredoxin was assembled with an equimolar amount of double stranded DNA substrate. Crystallization was achieved using a buffer containing 50mM HEPES pH 7.5, 10mM MgCl_2, 2mM DTT, and 0.5 mM terminal ddTTP Seed crystals were grown by hanging drop vapor diffusion by mixing 1ul each of protein-DNA solution and a reservoir solutions containing between 16 to 20% PEG 8000, 100mM ACES pH 7.5, 120 ammonium sulfate, 30mM MgCl2, and 5mM DTT. These crystals were used to streak-seed a grid of protein/reservoir solutions with concentrations of PEG 8000 between 13 to 15%. Pyramidal crystals appeared overnight and reached a maximum size of ~150 X 150 X 100 um3 after 3 to 4 days. Crystals were harvested overnight in mother-liquor containing 10 % PEG 400, temperature 273K, VAPOR DIFFUSION, HANGING DROP 分辨率 2.60 Å R-free 0.284
2 蛋白–DNA 异源复合物 蛋白 × 2 DNA 2 PDB 声明:tetrameric(4) 与全部聚合物数一致 链 I; UniProt 1–108 突变:Residues 5 and 7 mutated to Ala DNA Primer × 1 DNA Template × 1 T7 DNA polymerase × 1 (P00581) X-RAY DIFFRACTION X-ray结晶条件:VAPOR DIFFUSION, HANGING DROP;pH 7.5;273 K;A complex of 1x10^-4 M T7 DNA polymerase 5A7A:thioredoxin was assembled with an equimolar amount of double stranded DNA substrate. Crystallization was achieved using a buffer containing 50mM HEPES pH 7.5, 10mM MgCl_2, 2mM DTT, and 0.5 mM terminal ddTTP Seed crystals were grown by hanging drop vapor diffusion by mixing 1ul each of protein-DNA solution and a reservoir solutions containing between 16 to 20% PEG 8000, 100mM ACES pH 7.5, 120 ammonium sulfate, 30mM MgCl2, and 5mM DTT. These crystals were used to streak-seed a grid of protein/reservoir solutions with concentrations of PEG 8000 between 13 to 15%. Pyramidal crystals appeared overnight and reached a maximum size of ~150 X 150 X 100 um3 after 3 to 4 days. Crystals were harvested overnight in mother-liquor containing 10 % PEG 400, temperature 273K, VAPOR DIFFUSION, HANGING DROP 分辨率 2.60 Å R-free 0.284

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 52 个其他 PDB 条目、99 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 THIO_ECOLI
Isoform
PDB实体 4
链与序列区间 作者链 B; PDB构建体 1–108; UniProt 1–108 作者链 I; PDB构建体 1–108; UniProt 1–108

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 2ajq

P(r) 距离分布 P(r) Distribution

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

条目编号 entry_id2ajq
沉积日期 deposition_date2005-08-02
结构标题 titleStructure of replicative DNA polymerase provides insigts into the mechanisms for processivity, frameshifting and editing
关键词 keywordsPolymerase T7; x-ray crystallography; ternary complex, TRANSFERASE, TRANSCRIPTION-DNA COMPLEX; TRANSFERASE,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_guinier43.41
回转半径 Rg (电子) rg_electron43.58
零角强度 I(0) i0731389000.00
分子量 molecular_weight205400.0 kDa
排除体积 excluded_volume249760 ų
包络体积 envelope_volume373540 ų
水化壳体积 shell_volume71448 ų
包络直径 envelope_diameter143.0
壳层 Rg shell_rg48.87
包络 Rg envelope_rg42.03
形状 Rg shape_rg43.58
总 Rg total_rg43.80
总原子数 total_atoms14377
残基数 n_residues1689
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 dmax135.4
Rg (实空间) rg_real43.98
Rg 误差 (实空间) rg_real_error0.40
I(0) (实空间) i0_real7.1970e+08
I(0) 误差 (实空间) i0_real_error1.0070e+07
Rg (倒空间) rg_reciprocal43.41
I(0) (倒空间) i0_reciprocal731500000.0000
解质量估计 total_estimate0.7190
解质量评级 solution_quality REASONABLE a REASONABLE solution
P(r) 峰数 n_peaks1
主峰位置 r_peak_primary60.2
偏度 Skewness skewness0.184
峰度 Kurtosis kurtosis-0.453
角度范围 angular_range— – 0.1800 −1
当前正则化参数 α current_alpha2.0050
最高正则化参数 α highest_alpha84120000.0000
实空间数据点数 n_real_points37
GNOM 版本 gnom_version4.1.3
质量判据 quality_criteria AN1: 0.000; Oscil: 0.959; Stabil: 0.923; Sysdev: 0.000; Positv: 1.000; Valcen: 0.992; Smooth: 0.737

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

6. 实体与聚合物信息 Entities & Polymers (5)

7. 折叠分类 (SCOP + CATH) 16 domains

SCOP 2.08 (6 domains)

结构域编号 domain_idd2ajqa1
类 Class classc — Alpha and beta proteins (a/b)
折叠类型 Fold foldc.55 — Ribonuclease H-like motif
超家族 Superfamily superfamilyc.55.3 — Ribonuclease H-like
家族 Family familyc.55.3.5 — DnaQ-like 3'-5' exonuclease
结构域编号 domain_idd2ajqa2
类 Class classe — Multi-domain proteins (alpha and beta)
折叠类型 Fold folde.8 — DNA/RNA polymerases
超家族 Superfamily superfamilye.8.1 — DNA/RNA polymerases
家族 Family familye.8.1.1 — DNA polymerase I
结构域编号 domain_idd2ajqb_
类 Class classc — Alpha and beta proteins (a/b)
折叠类型 Fold foldc.47 — Thioredoxin fold
超家族 Superfamily superfamilyc.47.1 — Thioredoxin-like
家族 Family familyc.47.1.1 — Thioltransferase
结构域编号 domain_idd2ajqf1
类 Class classc — Alpha and beta proteins (a/b)
折叠类型 Fold foldc.55 — Ribonuclease H-like motif
超家族 Superfamily superfamilyc.55.3 — Ribonuclease H-like
家族 Family familyc.55.3.5 — DnaQ-like 3'-5' exonuclease
结构域编号 domain_idd2ajqf2
类 Class classe — Multi-domain proteins (alpha and beta)
折叠类型 Fold folde.8 — DNA/RNA polymerases
超家族 Superfamily superfamilye.8.1 — DNA/RNA polymerases
家族 Family familye.8.1.1 — DNA polymerase I
结构域编号 domain_idd2ajqi_
类 Class classc — Alpha and beta proteins (a/b)
折叠类型 Fold foldc.47 — Thioredoxin fold
超家族 Superfamily superfamilyc.47.1 — Thioredoxin-like
家族 Family familyc.47.1.1 — Thioltransferase

CATH v4.4 (10 domains)

结构域编号 domain_id2ajqA01
类 Class class3 — Alpha Beta
架构 Architecture architecture30 — 2-Layer Sandwich
拓扑 Topology topology420 — Nucleotidyltransferase; domain 5
同源超家族 H-superfamily homologous superfamily10 — Ribonuclease H-like superfamily/Ribonuclease H
结构域编号 domain_id2ajqA02
类 Class class1 — Mainly Alpha
架构 Architecture architecture20 — Up-down Bundle
拓扑 Topology topology1060 — Taq DNA Polymerase; Chain T, domain 4
同源超家族 H-superfamily homologous superfamily10 — Taq DNA Polymerase; Chain T, domain 4
结构域编号 domain_id2ajqA03
类 Class class3 — Alpha Beta
架构 Architecture architecture30 — 2-Layer Sandwich
拓扑 Topology topology70 — Alpha-Beta Plaits
同源超家族 H-superfamily homologous superfamily370
结构域编号 domain_id2ajqA04
类 Class class1 — Mainly Alpha
架构 Architecture architecture10 — Orthogonal Bundle
拓扑 Topology topology150 — DNA polymerase; domain 1
同源超家族 H-superfamily homologous superfamily20 — 5' to 3' exonuclease, C-terminal subdomain
结构域编号 domain_id2ajqB00
类 Class class3 — Alpha Beta
架构 Architecture architecture40 — 3-Layer(aba) Sandwich
拓扑 Topology topology30 — Glutaredoxin
同源超家族 H-superfamily homologous superfamily10 — Glutaredoxin
结构域编号 domain_id2ajqF01
类 Class class3 — Alpha Beta
架构 Architecture architecture30 — 2-Layer Sandwich
拓扑 Topology topology420 — Nucleotidyltransferase; domain 5
同源超家族 H-superfamily homologous superfamily10 — Ribonuclease H-like superfamily/Ribonuclease H
结构域编号 domain_id2ajqF02
类 Class class1 — Mainly Alpha
架构 Architecture architecture20 — Up-down Bundle
拓扑 Topology topology1060 — Taq DNA Polymerase; Chain T, domain 4
同源超家族 H-superfamily homologous superfamily10 — Taq DNA Polymerase; Chain T, domain 4
结构域编号 domain_id2ajqF03
类 Class class3 — Alpha Beta
架构 Architecture architecture30 — 2-Layer Sandwich
拓扑 Topology topology70 — Alpha-Beta Plaits
同源超家族 H-superfamily homologous superfamily370
结构域编号 domain_id2ajqF04
类 Class class1 — Mainly Alpha
架构 Architecture architecture10 — Orthogonal Bundle
拓扑 Topology topology150 — DNA polymerase; domain 1
同源超家族 H-superfamily homologous superfamily20 — 5' to 3' exonuclease, C-terminal subdomain
结构域编号 domain_id2ajqI00
类 Class class3 — Alpha Beta
架构 Architecture architecture40 — 3-Layer(aba) Sandwich
拓扑 Topology topology30 — Glutaredoxin
同源超家族 H-superfamily homologous superfamily10 — Glutaredoxin

8. 引用文献 (1)

9. 文件与曲线 (10)