1gm9

Crystal structures of penicillin acylase enzyme-substrate complexes: Structural insights into the catalytic mechanism

Method: X-RAY DIFFRACTION Dmax: 85.5 Å Quality: EXCELLENT

SAXS 散射曲线 SAXS Profile

SAXS profile for 1gm9

P(r) 距离分布 P(r) Distribution

P(r) distribution for 1gm9
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1. 结构基本信息 1. Structure Basics

条目编号 entry_id1gm9
沉积日期 deposition_date2001-09-12
结构标题 titleCrystal structures of penicillin acylase enzyme-substrate complexes: Structural insights into the catalytic mechanism
关键词 keywordsANTIBIOTIC RESISTANCE, HYDROLASE; HYDROLASE
实验方法 methodX-RAY DIFFRACTION

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

回转半径 Rg (Guinier) rg_guinier27.58
回转半径 Rg (电子) rg_electron26.47
零角强度 I(0) i0121410000.00
分子量 molecular_weight87009.0 kDa
排除体积 excluded_volume108640 ų
包络体积 envelope_volume125160 ų
水化壳体积 shell_volume37753 ų
包络直径 envelope_diameter92.4
壳层 Rg shell_rg35.33
包络 Rg envelope_rg26.78
形状 Rg shape_rg26.44
总 Rg total_rg27.37
总原子数 total_atoms6147
残基数 n_residues763
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

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

最大尺寸 Dmax dmax85.5
Rg (实空间) rg_real27.42
Rg 误差 (实空间) rg_real_error0.46
I(0) (实空间) i0_real1.2140e+08
I(0) 误差 (实空间) i0_real_error1.7280e+06
Rg (倒空间) rg_reciprocal27.47
I(0) (倒空间) i0_reciprocal121400000.0000
解质量估计 total_estimate0.9043
解质量评级 solution_quality EXCELLENT a EXCELLENT solution
P(r) 峰数 n_peaks2
主峰位置 r_peak_primary35.4
偏度 Skewness skewness0.169
峰度 Kurtosis kurtosis-0.484
角度范围 angular_range— – 0.2900 −1
当前正则化参数 α current_alpha0.0000
最高正则化参数 α highest_alpha35320000.0000
实空间数据点数 n_real_points59
GNOM 版本 gnom_version4.1.3
质量判据 quality_criteria AN1: 0.000; Oscil: 0.930; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.989; Smooth: 0.972

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

5. 实体与聚合体信息 (6)

6. 折叠分类 (SCOP + CATH) 6 domains

SCOP 2.08 (1 domains)

结构域编号 domain_idd1gm9.1
类 Class classd — Alpha and beta proteins (a+b)
折叠类型 Fold foldd.153 — Ntn hydrolase-like
超家族 Superfamily superfamilyd.153.1 — N-terminal nucleophile aminohydrolases (Ntn hydrolases)
家族 Family familyd.153.1.2 — Penicillin acylase, catalytic domain

CATH v4.4 (5 domains)

结构域编号 domain_id1gm9A01
类 Class class1 — Mainly Alpha
架构 Architecture architecture10 — Orthogonal Bundle
拓扑 Topology topology439 — Penicillin Amidohydrolase; domain 1
同源超家族 H-superfamily homologous superfamily10 — Penicillin Amidohydrolase, domain 1
结构域编号 domain_id1gm9A02
类 Class class1 — Mainly Alpha
架构 Architecture architecture10 — Orthogonal Bundle
拓扑 Topology topology287 — Helix Hairpins
同源超家族 H-superfamily homologous superfamily150
结构域编号 domain_id1gm9B01
类 Class class3 — Alpha Beta
架构 Architecture architecture60 — 4-Layer Sandwich
拓扑 Topology topology20 — Glutamine Phosphoribosylpyrophosphate, subunit 1, domain 1
同源超家族 H-superfamily homologous superfamily10 — Aminohydrolase, N-terminal nucleophile (Ntn) domain
结构域编号 domain_id1gm9B02
类 Class class2 — Mainly Beta
架构 Architecture architecture30 — Roll
拓扑 Topology topology120 — Penicillin G acylase, beta-roll domain
同源超家族 H-superfamily homologous superfamily10 — Aminohydrolase, N-terminal nucleophile (Ntn) domain, beta-sheet knob region
结构域编号 domain_id1gm9B03
类 Class class1 — Mainly Alpha
架构 Architecture architecture10 — Orthogonal Bundle
拓扑 Topology topology1400 — Penicillin amidase (Acylase) alpha subunit, N-terminal domain
同源超家族 H-superfamily homologous superfamily10 — Aminohydrolase, alpha-helical knob region

7. 引用文献 (3)

8. 文件与曲线 (10)