1g6x

ULTRA HIGH RESOLUTION STRUCTURE OF BOVINE PANCREATIC TRYPSIN INHIBITOR (BPTI) MUTANT WITH ALTERED BINDING LOOP SEQUENCE

Method: X-RAY DIFFRACTION Dmax: 46.2 Å Quality: GOOD

1. 蛋白身份与相关结构 Protein Identity & Related Structures

PANCREATIC TRYPSIN INHIBITOR

Bos taurus

UniProt P00974

当前结构中的状态

Assembly 聚集状态 构建体 突变与修饰 配体、离子与共同组分 实验方法与环境 结构质量
1 蛋白单体 单体 蛋白 × 1 PDB 声明:monomeric(1) 与蛋白拷贝数一致 链 A; UniProt 36–93 突变:YES SO4 SULFATE ION × 8 EDO 1,2-ETHANEDIOL × 2 X-RAY DIFFRACTION X-ray结晶条件:VAPOR DIFFUSION, HANGING DROP;pH 7.5;292 K;2% PEG 400, 2 M AMMONIUM SULFATE, 0.1 M NA HEPES. A PROTEIN SAMPLE, LYOPHILIZED AFTER HPLC PURIFICATION FROM TFA/ACETONITRILE MIXTURE, WAS DISSOLVED IN WATER TO A CONCENTRATION OF 9 MG/2 UL DROPS OF THE PROTEIN SOLUTION WERE MIXED WITH 2 UL OF RESERVOIR SOLUTION CONTAINING 2% PEG 400, 2 M AMMONIUM SULFATE AND 0.1 M NA HEPES, PH 7.5. THE HANGING DROPLETS WERE EQUILIBRATED AT 19 DEG C THROUGH THE GAS PHASE WITH THE RESERVOIR. PRISMATIC CRYSTALS MEASURING UP TO 0.4 MM GREW WITHIN 12 HOURS. FOR LOW-TEMPERATURE DATA COLLECTION (100 K), THE CRYSTAL WAS CRYOPROTECTED IN THE RESERVOIR SOLUTION SUPPLEMENTED BY 30 % ETHYLENE GLYCOL., VAPOR DIFFUSION, HANGING DROP, temperature 292K 分辨率 0.86 Å R-free 0.140
2 蛋白同源多聚体 同源多聚体 蛋白 × 2 PDB 声明:dimeric(2) 与蛋白拷贝数一致 链 A; UniProt 36–93 突变:YES SO4 SULFATE ION × 16 EDO 1,2-ETHANEDIOL × 4 X-RAY DIFFRACTION X-ray结晶条件:VAPOR DIFFUSION, HANGING DROP;pH 7.5;292 K;2% PEG 400, 2 M AMMONIUM SULFATE, 0.1 M NA HEPES. A PROTEIN SAMPLE, LYOPHILIZED AFTER HPLC PURIFICATION FROM TFA/ACETONITRILE MIXTURE, WAS DISSOLVED IN WATER TO A CONCENTRATION OF 9 MG/2 UL DROPS OF THE PROTEIN SOLUTION WERE MIXED WITH 2 UL OF RESERVOIR SOLUTION CONTAINING 2% PEG 400, 2 M AMMONIUM SULFATE AND 0.1 M NA HEPES, PH 7.5. THE HANGING DROPLETS WERE EQUILIBRATED AT 19 DEG C THROUGH THE GAS PHASE WITH THE RESERVOIR. PRISMATIC CRYSTALS MEASURING UP TO 0.4 MM GREW WITHIN 12 HOURS. FOR LOW-TEMPERATURE DATA COLLECTION (100 K), THE CRYSTAL WAS CRYOPROTECTED IN THE RESERVOIR SOLUTION SUPPLEMENTED BY 30 % ETHYLENE GLYCOL., VAPOR DIFFUSION, HANGING DROP, temperature 292K 分辨率 0.86 Å R-free 0.140

数据库中的同蛋白其他状态

以下每一行都是同一 UniProt 蛋白在另一个 PDB 条目中的 biological assembly, “相对当前条目”直接指出证据层面的不同;没有差异标签表示当前已读取字段一致。

共 123 个其他 PDB 条目、264 个 assembly。 打开独立比较页并筛选聚集状态

查看构建体与数据证据
UniProt名称 BPT1_BOVIN
Isoform
PDB实体 1
链与序列区间 作者链 A; PDB构建体 1–58; UniProt 36–93

页面优先展示蛋白身份、当前 assembly、共同组分、聚集状态和跨 PDB 结构链接。 链映射与序列区间收在“数据证据”中;数据库内部编号、导入时间和 assembly 操作表达式仅用于维护,因此不在读者页面展示。

SAXS 散射曲线 SAXS Profile

SAXS profile for 1g6x

P(r) 距离分布 P(r) Distribution

P(r) distribution for 1g6x
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2. 结构基本信息 2. Structure Basics

条目编号 entry_id1g6x
沉积日期 deposition_date2000-11-08
结构标题 titleULTRA HIGH RESOLUTION STRUCTURE OF BOVINE PANCREATIC TRYPSIN INHIBITOR (BPTI) MUTANT WITH ALTERED BINDING LOOP SEQUENCE
关键词 keywordsSERINE PROTEASE INHIBITOR, HYDROLASE INHIBITOR; HYDROLASE INHIBITOR
实验方法 methodX-RAY DIFFRACTION

3. SAXS 参数 (CRYSOL 理论计算) 3. SAXS Parameters (CRYSOL)

回转半径 Rg (Guinier) rg_guinier12.94
回转半径 Rg (电子) rg_electron11.54
零角强度 I(0) i01630750.00
分子量 molecular_weight7306.0 kDa
排除体积 excluded_volume8539 ų
包络体积 envelope_volume10059 ų
水化壳体积 shell_volume7849 ų
包络直径 envelope_diameter43.8
壳层 Rg shell_rg16.65
包络 Rg envelope_rg12.06
形状 Rg shape_rg11.38
总 Rg total_rg13.03
总原子数 total_atoms496
残基数 n_residues58
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

4. P(r) 距离分布 (GNOM 反演) 4. P(r) Analysis (GNOM)

最大尺寸 Dmax dmax46.2
Rg (实空间) rg_real12.94
Rg 误差 (实空间) rg_real_error0.49
I(0) (实空间) i0_real1.6310e+06
I(0) 误差 (实空间) i0_real_error1.9130e+04
Rg (倒空间) rg_reciprocal12.94
I(0) (倒空间) i0_reciprocal1631000.0000
解质量估计 total_estimate0.8517
解质量评级 solution_quality GOOD a GOOD solution
P(r) 峰数 n_peaks2
主峰位置 r_peak_primary14.6
偏度 Skewness skewness0.370
峰度 Kurtosis kurtosis-0.181
角度范围 angular_range— – 0.5000 −1
当前正则化参数 α current_alpha0.0000
最高正则化参数 α highest_alpha298100.0000
实空间数据点数 n_real_points80
GNOM 版本 gnom_version4.1.3
质量判据 quality_criteria AN1: 0.000; Oscil: 0.738; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.889; Smooth: 0.965

5. 晶体学与实验 5. Crystallography & Experiment

6. 实体与聚合物信息 Entities & Polymers (4)

7. 折叠分类 (SCOP + CATH) 2 domains

SCOP 2.08 (1 domains)

结构域编号 domain_idd1g6xa_
类 Class classg — Small proteins
折叠类型 Fold foldg.8 — BPTI-like
超家族 Superfamily superfamilyg.8.1 — BPTI-like
家族 Family familyg.8.1.1 — Small Kunitz-type inhibitors & BPTI-like toxins

CATH v4.4 (1 domains)

结构域编号 domain_id1g6xA00
类 Class class4 — Few Secondary Structures
架构 Architecture architecture10 — Irregular
拓扑 Topology topology410 — Factor Xa Inhibitor
同源超家族 H-superfamily homologous superfamily10 — Pancreatic trypsin inhibitor Kunitz domain

8. 引用文献 (6)

9. 文件与曲线 (10)