SAXSdb — 1g8m

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1. 结构基本信息 1. Structure Basics

条目编号 entry_id	1g8m
沉积日期 deposition_date	2000-11-17
结构标题 title	;CRYSTAL STRUCTURE OF AVIAN ATIC, A BIFUNCTIONAL TRANSFORMYLASE AND CYCLOHYDROLASE ENZYME IN PURINE BIOSYNTHESIS AT 1.75 ANG. RESOLUTION ;
关键词 keywords	;Homodimer, 2 functional domains; IMPCH domain = alpha/beta/alpha; AICAR Tfase = 2 alpha/beta/alpha domains, 1 alpha + beta domain, transferase, hydrolase ;; transferase, hydrolase
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	34.38 Å
回转半径 Rg (电子) rg_electron	33.84 Å
零角强度 I(0) i0	264120000.00
分子量 molecular_weight	129570.0 kDa
排除体积 excluded_volume	161440 Å³
包络体积 envelope_volume	199200 Å³
水化壳体积 shell_volume	48709 Å³
包络直径 envelope_diameter	112.8 Å
壳层 Rg shell_rg	40.95 Å
包络 Rg envelope_rg	33.84 Å
形状 Rg shape_rg	33.82 Å
总 Rg total_rg	34.38 Å
总原子数 total_atoms	9040
残基数 n_residues	1160
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	112.1 Å
Rg (实空间) rg_real	34.41 Å
Rg 误差 (实空间) rg_real_error	0.78 Å
I(0) (实空间) i0_real	2.6410e+08
I(0) 误差 (实空间) i0_real_error	4.1410e+06
Rg (倒空间) rg_reciprocal	34.40 Å
I(0) (倒空间) i0_reciprocal	264100000.0000
解质量估计 total_estimate	0.8879
解质量评级 solution_quality	GOOD a GOOD solution
P(r) 峰数 n_peaks	2
主峰位置 r_peak_primary	36.6 Å
偏度 Skewness skewness	0.364
峰度 Kurtosis kurtosis	-0.503
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	80960000.0000
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: 0.871; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.995; Smooth: 0.931

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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 (4)

Entity 1 polymer

描述 description	AICAR TRANSFORMYLASE-IMP CYCLOHYDROLASE
分子量 formula_weight	64966.7 kDa
EC 编号 ec_number	2.1.2.3, 3.5.4.10
突变 mutation	MET REPLACED BY SE-MET (MSE)
来源方法 src_method	man
拷贝数 entity_count	2

聚合体 Polymer

聚合体类型 type	polypeptide(L)
链编号 strand_id	A,B
原子数 atom_count	9795

MAARQQLALLSVSEKAGLVEFARSLNALGLGLIASGGTATALRDAGLPVRDVSDLTGFPEMLGGRVKTLHPAVHAGILARNIPEDNADMNKQDFSLVRVVVCNLYPFVKTVSSPGVTVPEAVEKIDIGGVALLRAAAKNHARVTVVCDPADYSSVAKEMAASKDKDTSVETRRHLALKAFTHTAQYDAAISDYFRKEYSKGVSQLPLRYGMNPHQSPAQLYTTRPKLPLTVVNGSPGFINLCDALNAWQLVKELKQALGIPAAASFKHVSPAGAAVGIPLSEEEAQVCMVHDLHKTLTPLASAYARSRGADRMSSFGDFIALSDICDVPTAKIISREVSDGVVAPGYEEEALKILSKKKNGGYCVLQMDPNYEPDDNEIRTLYGLQLMQKRNNAVIDRSLFKNIVTKNKTLPESAVRDLIVASIAVKYTQSNSVCYAKDGQVIGIGAGQQSRIHCTRLAGDKANSWWLRHHPRVLSMKFKAGVKRAEVSNAIDQYVTGTIGEDEDLVKWQAMFEEVPAQLTEAEKKQWIAKLTAVSLSSDAFFPFRDNVDRAKRIGVQFIVAPSGSAADEVVIEACNELGITLIHTNLRLFHH

来源 Source

来源生物 organism	Gallus gallus
通用名 common_name	chicken
NCBI 分类编号 ncbi_taxonomy_id	9031
宿主生物 host_organism	Escherichia coli

Entity 2 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	2

Entity 3 non-polymer

描述 description	GUANOSINE-5'-MONOPHOSPHATE
分子量 formula_weight	363.2 kDa
来源方法 src_method	syn
拷贝数 entity_count	1

Entity 4 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	744

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6. 折叠分类 (SCOP + CATH) 12 domains

SCOP 2.08 (4 domains)

结构域编号 domain_id	d1g8ma1
类 Class class	c — Alpha and beta proteins (a/b)
折叠类型 Fold fold	c.24 — Methylglyoxal synthase-like
超家族 Superfamily superfamily	c.24.1 — Methylglyoxal synthase-like
家族 Family family	c.24.1.3 — Inosicase

结构域编号 domain_id	d1g8ma2
类 Class class	c — Alpha and beta proteins (a/b)
折叠类型 Fold fold	c.97 — Cytidine deaminase-like
超家族 Superfamily superfamily	c.97.1 — Cytidine deaminase-like
家族 Family family	c.97.1.4 — AICAR transformylase domain of bifunctional purine biosynthesis enzyme ATIC

结构域编号 domain_id	d1g8mb1
类 Class class	c — Alpha and beta proteins (a/b)
折叠类型 Fold fold	c.24 — Methylglyoxal synthase-like
超家族 Superfamily superfamily	c.24.1 — Methylglyoxal synthase-like
家族 Family family	c.24.1.3 — Inosicase

结构域编号 domain_id	d1g8mb2
类 Class class	c — Alpha and beta proteins (a/b)
折叠类型 Fold fold	c.97 — Cytidine deaminase-like
超家族 Superfamily superfamily	c.97.1 — Cytidine deaminase-like
家族 Family family	c.97.1.4 — AICAR transformylase domain of bifunctional purine biosynthesis enzyme ATIC

CATH v4.4 (8 domains)

结构域编号 domain_id	1g8mA01
类 Class class	1 — Mainly Alpha
架构 Architecture architecture	10 — Orthogonal Bundle
拓扑 Topology topology	287 — Helix Hairpins
同源超家族 H-superfamily homologous superfamily	440 —

结构域编号 domain_id	1g8mA02
类 Class class	3 — Alpha Beta
架构 Architecture architecture	40 — 3-Layer(aba) Sandwich
拓扑 Topology topology	140 — Cytidine Deaminase; domain 2
同源超家族 H-superfamily homologous superfamily	20 — AICAR transformylase, duplication domain

结构域编号 domain_id	1g8mA03
类 Class class	3 — Alpha Beta
架构 Architecture architecture	40 — 3-Layer(aba) Sandwich
拓扑 Topology topology	140 — Cytidine Deaminase; domain 2
同源超家族 H-superfamily homologous superfamily	20 — AICAR transformylase, duplication domain

结构域编号 domain_id	1g8mA04
类 Class class	3 — Alpha Beta
架构 Architecture architecture	40 — 3-Layer(aba) Sandwich
拓扑 Topology topology	50 — Rossmann fold
同源超家族 H-superfamily homologous superfamily	1380 — Methylglyoxal synthase-like domain

结构域编号 domain_id	1g8mB01
类 Class class	1 — Mainly Alpha
架构 Architecture architecture	10 — Orthogonal Bundle
拓扑 Topology topology	287 — Helix Hairpins
同源超家族 H-superfamily homologous superfamily	440 —

结构域编号 domain_id	1g8mB02
类 Class class	3 — Alpha Beta
架构 Architecture architecture	40 — 3-Layer(aba) Sandwich
拓扑 Topology topology	140 — Cytidine Deaminase; domain 2
同源超家族 H-superfamily homologous superfamily	20 — AICAR transformylase, duplication domain

结构域编号 domain_id	1g8mB03
类 Class class	3 — Alpha Beta
架构 Architecture architecture	40 — 3-Layer(aba) Sandwich
拓扑 Topology topology	140 — Cytidine Deaminase; domain 2
同源超家族 H-superfamily homologous superfamily	20 — AICAR transformylase, duplication domain

结构域编号 domain_id	1g8mB04
类 Class class	3 — Alpha Beta
架构 Architecture architecture	40 — 3-Layer(aba) Sandwich
拓扑 Topology topology	50 — Rossmann fold
同源超家族 H-superfamily homologous superfamily	1380 — Methylglyoxal synthase-like domain

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7. 引用文献 (1)

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晶胞边长 a length_a	65.100 Å
晶胞边长 b length_b	106.000 Å
晶胞边长 c length_c	103.500 Å
晶胞夹角 α angle_alpha	90.00 °
晶胞夹角 β angle_beta	108.00 °
晶胞夹角 γ angle_gamma	90.00 °
晶胞分子数 Z z_pdb	4

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

分辨率 resolution	1.750 Å
最低分辨率 resolution_low	50.000 Å
R 因子 r_factor	—
R_work r_work	0.1996
R_free r_free	0.2164

fit	/app/data/saxs_computation/g8/1g8m/1g8m.fit
pddf	/app/data/pr_computation/g8/1g8m/1g8m.pr.out
profile	/app/data/saxs_computation/g8/1g8m/1g8m.dat

;CRYSTAL STRUCTURE OF AVIAN ATIC, A BIFUNCTIONAL TRANSFORMYLASE AND CYCLOHYDROLASE ENZYME IN PURINE BIOSYNTHESIS AT 1.75 ANG. RESOLUTION ;

SAXS 散射曲线 SAXS Profile

P(r) 距离分布 P(r) Distribution

1. 结构基本信息 1. Structure Basics

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

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

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

晶胞参数 Unit Cell

对称性 Symmetry

精修参数 Refinement

衍射实验 Diffraction