SAXSdb — 2ibw

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1. 结构基本信息 1. Structure Basics

条目编号 entry_id	2ibw
沉积日期 deposition_date	2006-09-12
结构标题 title	;Crystallographic and kinetic studies of human mitochondrial acetoacetyl-CoA thiolase (T2): the importance of potassium and chloride for its structure and function ;
关键词 keywords	;thiolase fold, potassium ion, chloride, beta-alpha-beta-alpha-beta-alpha-beta-beta topology, alpha-beta-alpha-beta-alpha layered structure, 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	38.31 Å
回转半径 Rg (电子) rg_electron	38.17 Å
零角强度 I(0) i0	426573000.00
分子量 molecular_weight	168450.0 kDa
排除体积 excluded_volume	211190 Å³
包络体积 envelope_volume	265980 Å³
水化壳体积 shell_volume	56918 Å³
包络直径 envelope_diameter	123.7 Å
壳层 Rg shell_rg	45.17 Å
包络 Rg envelope_rg	37.50 Å
形状 Rg shape_rg	38.18 Å
总 Rg total_rg	38.52 Å
总原子数 total_atoms	11740
残基数 n_residues	1564
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	124.9 Å
Rg (实空间) rg_real	38.25 Å
Rg 误差 (实空间) rg_real_error	0.93 Å
I(0) (实空间) i0_real	4.2660e+08
I(0) 误差 (实空间) i0_real_error	6.7420e+06
Rg (倒空间) rg_reciprocal	38.29 Å
I(0) (倒空间) i0_reciprocal	426600000.0000
解质量估计 total_estimate	0.8976
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	39.6 Å
偏度 Skewness skewness	0.217
峰度 Kurtosis kurtosis	-0.662
角度范围 angular_range	— – 0.2050 Å⁻¹
当前正则化参数 α current_alpha	0.0000
最高正则化参数 α highest_alpha	212300000.0000
实空间数据点数 n_real_points	42
GNOM 版本 gnom_version	4.1.3
质量判据 quality_criteria	AN1: 0.000; Oscil: 0.909; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.993; Smooth: 0.945

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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 (7)

Entity 1 polymer

描述 description	Acetyl-CoA acetyltransferase
分子量 formula_weight	41549.0 kDa
EC 编号 ec_number	2.3.1.9
突变 mutation	V34A
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	12953

MASKPTLKEVVIVSATRTPIGSFLGSLSLLPATKLGSIAIQGAIEKAGIPKEEVKEAYMGNVLQGGEGQAPTRQAVLGAGLPISTPCTTINKVCASGMKAIMMASQSLMCGHQDVMVAGGMESMSNVPYVMNRGSTPYGGVKLEDLIVKDGLTDVYNKIHMGSCAENTAKKLNIARNEQDAYAINSYTRSKAAWEAGKFGNEVIPVTVTVKGQPDVVVKEDEEYKRVDFSKVPKLKTVFQKENGTVTAANASTLNDGAAALVLMTADAAKRLNVTPLARIVAFADAAVEPIDFPIAPVYAASMVLKDVGLKKEDIAMWEVNEAFSLVVLANIKMLEIDPQKVNINGGAVSLGHPIGMSGARIVGHLTHALKQGEYGLASICNGGGGASAMLIQKL

来源 Source

来源生物 organism	Homo sapiens
通用名 common_name	human
NCBI 分类编号 ncbi_taxonomy_id	9606
宿主生物 host_organism	Escherichia coli

Entity 2 non-polymer

描述 description	CHLORIDE ION
分子量 formula_weight	35.5 kDa
来源方法 src_method	syn
拷贝数 entity_count	4

Entity 3 non-polymer

描述 description	POTASSIUM ION
分子量 formula_weight	39.1 kDa
来源方法 src_method	syn
拷贝数 entity_count	4

Entity 4 non-polymer

描述 description	COENZYME A
分子量 formula_weight	767.5 kDa
来源方法 src_method	syn
拷贝数 entity_count	4

Entity 5 non-polymer

描述 description	2-(N-MORPHOLINO)-ETHANESULFONIC ACID
分子量 formula_weight	195.2 kDa
来源方法 src_method	syn
拷贝数 entity_count	1

Entity 6 non-polymer

描述 description	GLYCEROL
分子量 formula_weight	92.1 kDa
来源方法 src_method	syn
拷贝数 entity_count	1

Entity 7 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	1100

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6. 折叠分类 (SCOP + CATH) 8 domains

CATH v4.4 (8 domains)

结构域编号 domain_id	2ibwA01
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	2ibwA02
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	2ibwB01
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	2ibwB02
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	2ibwC01
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	2ibwC02
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	2ibwD01
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	2ibwD02
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 (1)

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晶胞边长 a length_a	76.143 Å
晶胞边长 b length_b	107.577 Å
晶胞边长 c length_c	101.954 Å
晶胞夹角 α angle_alpha	90.00 °
晶胞夹角 β angle_beta	102.89 °
晶胞夹角 γ angle_gamma	90.00 °
晶胞分子数 Z z_pdb	8

空间群 space_group	P 1 21 1
空间群编号 int_tables_number	4
晶系 crystal_system	—

分辨率 resolution	1.900 Å
最低分辨率 resolution_low	48.220 Å
R 因子 r_factor	0.1553
R_work r_work	0.1533
R_free r_free	0.1945

fit	/app/data/saxs_computation/ib/2ibw/2ibw.fit
pddf	/app/data/pr_computation/ib/2ibw/2ibw.pr.out
profile	/app/data/saxs_computation/ib/2ibw/2ibw.dat

;Crystallographic and kinetic studies of human mitochondrial acetoacetyl-CoA thiolase (T2): the importance of potassium and chloride for its structure and function ;

SAXS 散射曲线 SAXS Profile

P(r) 距离分布 P(r) Distribution