1ted

Crystal structure of a type III polyketide synthase PKS18 from Mycobacterium tuberculosis

Method: X-RAY DIFFRACTION D_max: 133.0 Å Quality: GOOD

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	1ted
沉积日期 deposition_date	2004-05-25
结构标题 title	Crystal structure of a type III polyketide synthase PKS18 from Mycobacterium tuberculosis
关键词 keywords	thiolase fold, substrate binding tunnel, 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	39.24 Å
回转半径 Rg (电子) rg_electron	38.93 Å
零角强度 I(0) i0	347105000.00
分子量 molecular_weight	155400.0 kDa
排除体积 excluded_volume	196180 Å³
包络体积 envelope_volume	242620 Å³
水化壳体积 shell_volume	52805 Å³
包络直径 envelope_diameter	140.4 Å
壳层 Rg shell_rg	43.57 Å
包络 Rg envelope_rg	38.81 Å
形状 Rg shape_rg	38.95 Å
总 Rg total_rg	39.09 Å
总原子数 total_atoms	10920
残基数 n_residues	1454
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	133.0 Å
Rg (实空间) rg_real	39.48 Å
Rg 误差 (实空间) rg_real_error	1.32 Å
I(0) (实空间) i0_real	3.4710e+08
I(0) 误差 (实空间) i0_real_error	6.9900e+06
Rg (倒空间) rg_reciprocal	39.34 Å
I(0) (倒空间) i0_reciprocal	347100000.0000
解质量估计 total_estimate	0.8548
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	36.6 Å
偏度 Skewness skewness	0.456
峰度 Kurtosis kurtosis	-0.430
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	109500000.0000
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: 0.794; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.908; Smooth: 0.818

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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	pks18
分子量 formula_weight	42073.3 kDa
EC 编号 ec_number	2.3.1.74
来源方法 src_method	man
拷贝数 entity_count	4

聚合体 Polymer

聚合体类型 type	polypeptide(L)
链编号 strand_id	A,B,C,D
原子数 atom_count	12026

MNVSAESGAPRRAGQRHEVGLAQLPPAPPTTVAVIEGLATGTPRRVVNQSDAADRVAELFLDPGQRERIPRVYQKSRITTRRMAVDPLDAKFDVFRREPATIRDRMHLFYEHAVPLAVDVSKRALAGLPYRAAEIGLLVLATSTGFIAPGVDVAIVKELGLSPSISRVVVNFMGCAAAMNALGTATNYVRAHPAMKALVVCIELCSVNAVFADDINDVVIHSLFGDGCAALVIGASQVQEKLEPGKVVVRSSFSQLLDNTEDGIVLGVNHNGITCELSENLPGYIFSGVAPVVTEMLWDNGLQISDIDLWAIHPGGPKIIEQSVRSLGISAELAAQSWDVLARFGNMLSVSLIFVLETMVQQAESAKAISTGVAFAFGPGVTVEGMLFDIIRR

来源 Source

来源生物 organism	Mycobacterium tuberculosis
NCBI 分类编号 ncbi_taxonomy_id	83332
宿主生物 host_organism	Escherichia coli BL21(DE3)

Entity 2 non-polymer

描述 description	MYRISTIC ACID
分子量 formula_weight	228.4 kDa
来源方法 src_method	syn
拷贝数 entity_count	4

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	1106

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6. 折叠分类 (SCOP + CATH) 16 domains

SCOP 2.08 (8 domains)

结构域编号 domain_id	d1teda1
类 Class class	c — Alpha and beta proteins (a/b)
折叠类型 Fold fold	c.95 — Thiolase-like
超家族 Superfamily superfamily	c.95.1 — Thiolase-like
家族 Family family	c.95.1.2 — Chalcone synthase-like

结构域编号 domain_id	d1teda2
类 Class class	c — Alpha and beta proteins (a/b)
折叠类型 Fold fold	c.95 — Thiolase-like
超家族 Superfamily superfamily	c.95.1 — Thiolase-like
家族 Family family	c.95.1.2 — Chalcone synthase-like

结构域编号 domain_id	d1tedb1
类 Class class	c — Alpha and beta proteins (a/b)
折叠类型 Fold fold	c.95 — Thiolase-like
超家族 Superfamily superfamily	c.95.1 — Thiolase-like
家族 Family family	c.95.1.2 — Chalcone synthase-like

结构域编号 domain_id	d1tedb2
类 Class class	c — Alpha and beta proteins (a/b)
折叠类型 Fold fold	c.95 — Thiolase-like
超家族 Superfamily superfamily	c.95.1 — Thiolase-like
家族 Family family	c.95.1.2 — Chalcone synthase-like

结构域编号 domain_id	d1tedc1
类 Class class	c — Alpha and beta proteins (a/b)
折叠类型 Fold fold	c.95 — Thiolase-like
超家族 Superfamily superfamily	c.95.1 — Thiolase-like
家族 Family family	c.95.1.2 — Chalcone synthase-like

结构域编号 domain_id	d1tedc2
类 Class class	c — Alpha and beta proteins (a/b)
折叠类型 Fold fold	c.95 — Thiolase-like
超家族 Superfamily superfamily	c.95.1 — Thiolase-like
家族 Family family	c.95.1.2 — Chalcone synthase-like

结构域编号 domain_id	d1tedd1
类 Class class	c — Alpha and beta proteins (a/b)
折叠类型 Fold fold	c.95 — Thiolase-like
超家族 Superfamily superfamily	c.95.1 — Thiolase-like
家族 Family family	c.95.1.2 — Chalcone synthase-like

结构域编号 domain_id	d1tedd2
类 Class class	c — Alpha and beta proteins (a/b)
折叠类型 Fold fold	c.95 — Thiolase-like
超家族 Superfamily superfamily	c.95.1 — Thiolase-like
家族 Family family	c.95.1.2 — Chalcone synthase-like

CATH v4.4 (8 domains)

结构域编号 domain_id	1tedA01
类 Class class	3 — Alpha Beta
架构 Architecture architecture	40 — 3-Layer(aba) Sandwich
拓扑 Topology topology	47 — Peroxisomal Thiolase; Chain A, domain 1
同源超家族 H-superfamily homologous superfamily	10 — Thiolase/Chalcone synthase

结构域编号 domain_id	1tedA02
类 Class class	3 — Alpha Beta
架构 Architecture architecture	40 — 3-Layer(aba) Sandwich
拓扑 Topology topology	47 — Peroxisomal Thiolase; Chain A, domain 1
同源超家族 H-superfamily homologous superfamily	10 — Thiolase/Chalcone synthase

结构域编号 domain_id	1tedB01
类 Class class	3 — Alpha Beta
架构 Architecture architecture	40 — 3-Layer(aba) Sandwich
拓扑 Topology topology	47 — Peroxisomal Thiolase; Chain A, domain 1
同源超家族 H-superfamily homologous superfamily	10 — Thiolase/Chalcone synthase

结构域编号 domain_id	1tedB02
类 Class class	3 — Alpha Beta
架构 Architecture architecture	40 — 3-Layer(aba) Sandwich
拓扑 Topology topology	47 — Peroxisomal Thiolase; Chain A, domain 1
同源超家族 H-superfamily homologous superfamily	10 — Thiolase/Chalcone synthase

结构域编号 domain_id	1tedC01
类 Class class	3 — Alpha Beta
架构 Architecture architecture	40 — 3-Layer(aba) Sandwich
拓扑 Topology topology	47 — Peroxisomal Thiolase; Chain A, domain 1
同源超家族 H-superfamily homologous superfamily	10 — Thiolase/Chalcone synthase

结构域编号 domain_id	1tedC02
类 Class class	3 — Alpha Beta
架构 Architecture architecture	40 — 3-Layer(aba) Sandwich
拓扑 Topology topology	47 — Peroxisomal Thiolase; Chain A, domain 1
同源超家族 H-superfamily homologous superfamily	10 — Thiolase/Chalcone synthase

结构域编号 domain_id	1tedD01
类 Class class	3 — Alpha Beta
架构 Architecture architecture	40 — 3-Layer(aba) Sandwich
拓扑 Topology topology	47 — Peroxisomal Thiolase; Chain A, domain 1
同源超家族 H-superfamily homologous superfamily	10 — Thiolase/Chalcone synthase

结构域编号 domain_id	1tedD02
类 Class class	3 — Alpha Beta
架构 Architecture architecture	40 — 3-Layer(aba) Sandwich
拓扑 Topology topology	47 — Peroxisomal Thiolase; Chain A, domain 1
同源超家族 H-superfamily homologous superfamily	10 — Thiolase/Chalcone synthase

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7. 引用文献 (2)

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晶胞边长 a length_a	59.914 Å
晶胞边长 b length_b	80.654 Å
晶胞边长 c length_c	99.612 Å
晶胞夹角 α angle_alpha	108.23 °
晶胞夹角 β angle_beta	92.97 °
晶胞夹角 γ angle_gamma	103.69 °
晶胞分子数 Z z_pdb	4

空间群 space_group	P 1
空间群编号 int_tables_number	1
晶系 crystal_system	—

分辨率 resolution	2.250 Å
最低分辨率 resolution_low	24.870 Å
R 因子 r_factor	0.2050
R_work r_work	0.2050
R_free r_free	0.2650

fit	/app/data/saxs_computation/te/1ted/1ted.fit
pddf	/app/data/pr_computation/te/1ted/1ted.pr.out
profile	/app/data/saxs_computation/te/1ted/1ted.dat