2hqa

Crystal structure of the catalytic alpha subunit of E. Coli replicative DNA polymerase III

Method: X-RAY DIFFRACTION D_max: 107.7 Å Quality: EXCELLENT

SAXS 散射曲线 SAXS Profile

P(r) 距离分布 P(r) Distribution

下载 Download SAXS (.dat) P(r) (.pr.out) CIF

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1. 结构基本信息 1. Structure Basics

条目编号 entry_id	2hqa
沉积日期 deposition_date	2006-07-18
结构标题 title	Crystal structure of the catalytic alpha subunit of E. Coli replicative DNA polymerase III
关键词 keywords	DNA POLYMERASE III, DNA REPLICATION, NUCLEOTIDYLTRANSFERASE, POL BETA, PHP, TRANSFERASE; TRANSFERASE
实验方法 method	X-RAY DIFFRACTION

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2. SAXS 参数 (CRYSOL 理论计算) 2. SAXS Parameters (CRYSOL)

回转半径 Rg (Guinier) rg_guinier	34.21 Å
回转半径 Rg (电子) rg_electron	33.41 Å
零角强度 I(0) i0	172588000.00
分子量 molecular_weight	103300.0 kDa
排除体积 excluded_volume	127990 Å³
包络体积 envelope_volume	168740 Å³
水化壳体积 shell_volume	42246 Å³
包络直径 envelope_diameter	105.4 Å
壳层 Rg shell_rg	40.21 Å
包络 Rg envelope_rg	32.94 Å
形状 Rg shape_rg	33.45 Å
总 Rg total_rg	33.82 Å
总原子数 total_atoms	7163
残基数 n_residues	880
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/Å³
壳层衬度 contrast_shell	0.0300 e/Å³
CRYSOL 版本 crysol_version	4.1.3

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3. P(r) 距离分布 (GNOM 反演) 3. P(r) Analysis (GNOM)

最大尺寸 Dmax dmax	107.7 Å
Rg (实空间) rg_real	34.11 Å
Rg 误差 (实空间) rg_real_error	0.84 Å
I(0) (实空间) i0_real	1.7260e+08
I(0) 误差 (实空间) i0_real_error	2.8420e+06
Rg (倒空间) rg_reciprocal	34.17 Å
I(0) (倒空间) i0_reciprocal	172600000.0000
解质量估计 total_estimate	0.9118
解质量评级 solution_quality	EXCELLENT a EXCELLENT solution
P(r) 峰数 n_peaks	1
主峰位置 r_peak_primary	44.5 Å
偏度 Skewness skewness	0.143
峰度 Kurtosis kurtosis	-0.653
角度范围 angular_range	— – 0.2300 Å⁻¹
当前正则化参数 α current_alpha	0.0000
最高正则化参数 α highest_alpha	26110000.0000
实空间数据点数 n_real_points	47
GNOM 版本 gnom_version	4.1.3
质量判据 quality_criteria	AN1: 0.000; Oscil: 0.960; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 1.000; Smooth: 0.969

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4. 晶体学与实验 4. Crystallography & Experiment

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5. 实体与聚合体信息 (3)

Entity 1 polymer

描述 description	DNA polymerase III alpha subunit
分子量 formula_weight	103905.1 kDa
EC 编号 ec_number	2.7.7.7
来源方法 src_method	man
拷贝数 entity_count	1

聚合体 Polymer

聚合体类型 type	polypeptide(L)
链编号 strand_id	A
原子数 atom_count	7267

MSEPRFVHLRVHSDYSMIDGLAKTAPLVKKAAALGMPALAITDFTNLCGLVKFYGAGHGAGIKPIVGADFNVQCDLLGDELTHLTVLAANNTGYQNLTLLISKAYQRGYGAAGPIIDRDWLIELNEGLILLSGGRMGDVGRSLLRGNSALVDECVAFYEEHFPDRYFLELIRTGRPDEESYLHAAVELAEARGLPVVATNDVRFIDSSDFDAHEIRVAIHDGFTLDDPKRPRNYSPQQYMRSEEEMCELFADIPEALANTVEIAKRCNVTVRLGEYFLPQFPTGDMSTEDYLVKRAKEGLEERLAFLFPDEEERLKRRPEYDERLETELQVINQMGFPGYFLIVMEFIQWSKDNGVPVGPGRGSGAGSLVAYALKITDLDPLEFDLLFERFLNPERVSMPDFDVDFCMEKRDQVIEHVADMYGRDAVSQIITFGTMAAKAVIRDVGRVLGHPYGFVDRISKLIPPDPGMTLAKAFEAEPQLPEIYEADEEVKALIDMARKLEGVTRNAGKHAGGVVIAPTKITDFAPLYCDEEGKHPVTQFDKSDVEYAGLVKFDFLGLRTLTIINWALEMINKRRAKNGEPPLDIAAIPLDDKKSFDMLQRSETTAVFQLESRGMKDLIKRLQPDCFEDMIALVALFRPGPLQSGMVDNFIDRKHGREEISYPDVQWQHESLKPVLEPTYGIILYQEQVMQIAQVLSGYTLGGADMLRRAMGKKKPEEMAKQRSVFAEGAEKNGINAELAMKIFDLVEKFAGYGFNKSHSAAYALVSYQTLWLKAHYPAEFMAAVMTADMDNTEKVVGLVDECWRMGLKILPPDINSGLYHFHVNDDGEIVYGIGAIKGVGEGPIEAIIEARNKGGYFRELFDLCARTDTKKLNRRVLEKLIMSGAFDRLGPHRAALMNSLGDALKAADQHAKAEA

来源 Source

来源生物 organism	Escherichia coli
NCBI 分类编号 ncbi_taxonomy_id	562
宿主生物 host_organism	Escherichia coli

Entity 2 non-polymer

描述 description	PHOSPHATE ION
分子量 formula_weight	95.0 kDa
来源方法 src_method	syn
拷贝数 entity_count	3

Entity 3 water

描述 description	water
分子量 formula_weight	18.0 kDa
来源方法 src_method	nat
拷贝数 entity_count	104

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6. 折叠分类 (SCOP + CATH) 2 domains

CATH v4.4 (2 domains)

结构域编号 domain_id	2hqaA01
类 Class class	3 — Alpha Beta
架构 Architecture architecture	20 — Alpha-Beta Barrel
拓扑 Topology topology	20 — TIM Barrel
同源超家族 H-superfamily homologous superfamily	140 — Metal-dependent hydrolases

结构域编号 domain_id	2hqaA03
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	1600 — Bacterial DNA polymerase III alpha subunit, thumb domain

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7. 引用文献 (1)

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晶胞边长 a length_a	83.112 Å
晶胞边长 b length_b	98.264 Å
晶胞边长 c length_c	139.475 Å
晶胞夹角 α angle_alpha	90.00 °
晶胞夹角 β angle_beta	90.00 °
晶胞夹角 γ angle_gamma	90.00 °
晶胞分子数 Z z_pdb	4

空间群 space_group	P 21 21 21
空间群编号 int_tables_number	19
晶系 crystal_system	—

分辨率 resolution	2.600 Å
最低分辨率 resolution_low	20.000 Å
R 因子 r_factor	0.2230
R_work r_work	0.2190
R_free r_free	0.2870

fit	/app/data/saxs_computation/hq/2hqa/2hqa.fit
pddf	/app/data/pr_computation/hq/2hqa/2hqa.pr.out
profile	/app/data/saxs_computation/hq/2hqa/2hqa.dat