8p8g

Nitrogenase MoFe protein from A. vinelandii beta double mutant D353G/D357G

Method: X-RAY DIFFRACTION Dmax: 124.1 Å Quality: GOOD

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

Nitrogenase protein alpha chain

Azotobacter vinelandii DJ

UniProt C1DGZ7

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 蛋白异源复合物 异源复合物 蛋白 × 4 PDB 声明:tetrameric(4) 与蛋白拷贝数一致 链 A; UniProt 3–492 链 C; UniProt 3–492 未记录 Nitrogenase molybdenum-iron protein beta chain × 2 (C1DGZ8) EDO 1,2-ETHANEDIOL × 35 CL CHLORIDE ION × 2 HCA 3-HYDROXY-3-CARBOXY-ADIPIC ACID × 2 ICS iron-sulfur-molybdenum cluster with interstitial carbon × 2 DIO 1,4-DIETHYLENE DIOXIDE × 2 GOL GLYCEROL × 1 1CL FE(8)-S(7) CLUSTER, OXIDIZED × 2 CLF FE(8)-S(7) CLUSTER × 2 NA SODIUM ION × 1 X-RAY DIFFRACTION X-ray结晶条件:VAPOR DIFFUSION, SITTING DROP;pH 5.6;293.15 K;The beta-D353G/D357G MoFe-protein was crystallized anaerobically at 17.5 mg/mL under 100% N2 atmosphere. The protein was spotted as a sitting drop to 96-Well MRC 2-Drop polystyrene Crystallization Plates (SWISSCI) containing 90 uL of crystallization solution in the reservoir. Each drop contained 0.5 uL of protein sample and 0.5 uL of crystallization solution. Crystals were obtained in the crystallization solution containing 10 % w/v Polyethylene glycol 10,000; 2 % v/v 1,4-Dioxane; 100 mM tri-Sodium citrate; pH 5.6, and 1 mM polyoxotungstate [TeW6O24]6- (TEW). Sealed plates were stored inside a Coy anaerobic chamber filled with an atmosphere of N2:H2 97:3 at 20 C. Crystals were soaked in the crystallization solution supplemented with 30% v/v ethylene glycol for a few seconds before freezing in liquid nitrogen. 分辨率 1.55 Å R-free 0.187

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 1 个其他 PDB 条目、2 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 C1DGZ7_AZOVD
Isoform
PDB实体 1
链与序列区间 作者链 A; PDB构建体 11–500; UniProt 3–492 作者链 C; PDB构建体 11–500; UniProt 3–492

Nitrogenase molybdenum-iron protein beta chain

Azotobacter vinelandii DJ

UniProt C1DGZ8

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 蛋白异源复合物 异源复合物 蛋白 × 4 PDB 声明:tetrameric(4) 与蛋白拷贝数一致 链 B; UniProt 1–523 链 D; UniProt 1–523 突变:D353G and D357G Nitrogenase protein alpha chain × 2 (C1DGZ7) EDO 1,2-ETHANEDIOL × 35 CL CHLORIDE ION × 2 HCA 3-HYDROXY-3-CARBOXY-ADIPIC ACID × 2 ICS iron-sulfur-molybdenum cluster with interstitial carbon × 2 DIO 1,4-DIETHYLENE DIOXIDE × 2 GOL GLYCEROL × 1 1CL FE(8)-S(7) CLUSTER, OXIDIZED × 2 CLF FE(8)-S(7) CLUSTER × 2 NA SODIUM ION × 1 X-RAY DIFFRACTION X-ray结晶条件:VAPOR DIFFUSION, SITTING DROP;pH 5.6;293.15 K;The beta-D353G/D357G MoFe-protein was crystallized anaerobically at 17.5 mg/mL under 100% N2 atmosphere. The protein was spotted as a sitting drop to 96-Well MRC 2-Drop polystyrene Crystallization Plates (SWISSCI) containing 90 uL of crystallization solution in the reservoir. Each drop contained 0.5 uL of protein sample and 0.5 uL of crystallization solution. Crystals were obtained in the crystallization solution containing 10 % w/v Polyethylene glycol 10,000; 2 % v/v 1,4-Dioxane; 100 mM tri-Sodium citrate; pH 5.6, and 1 mM polyoxotungstate [TeW6O24]6- (TEW). Sealed plates were stored inside a Coy anaerobic chamber filled with an atmosphere of N2:H2 97:3 at 20 C. Crystals were soaked in the crystallization solution supplemented with 30% v/v ethylene glycol for a few seconds before freezing in liquid nitrogen. 分辨率 1.55 Å R-free 0.187

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 12 个其他 PDB 条目、12 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 C1DGZ8_AZOVD
Isoform
PDB实体 2
链与序列区间 作者链 B; PDB构建体 1–523; UniProt 1–523 作者链 D; PDB构建体 1–523; UniProt 1–523

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 8p8g

P(r) 距离分布 P(r) Distribution

P(r) distribution for 8p8g
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2. 结构基本信息 2. Structure Basics

条目编号 entry_id8p8g
沉积日期 deposition_date2023-06-01
最后修订 last_revision2023-12-13
结构标题 titleNitrogenase MoFe protein from A. vinelandii beta double mutant D353G/D357G
关键词 keywordsMolybdenum nitrogenase, N2-fixation, FeMocofactor, metal binding site, P cluster, NH3 production, OXIDOREDUCTASE; OXIDOREDUCTASE
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_guinier38.46
回转半径 Rg (电子) rg_electron37.84
零角强度 I(0) i0811038000.00
分子量 molecular_weight232020.0 kDa
排除体积 excluded_volume288920 ų
包络体积 envelope_volume333750 ų
水化壳体积 shell_volume70028 ų
包络直径 envelope_diameter125.6
壳层 Rg shell_rg46.28
包络 Rg envelope_rg37.89
形状 Rg shape_rg37.84
总 Rg total_rg38.26
总原子数 total_atoms16163
残基数 n_residues1998
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 dmax124.1
Rg (实空间) rg_real38.35
Rg 误差 (实空间) rg_real_error0.75
I(0) (实空间) i0_real8.1100e+08
I(0) 误差 (实空间) i0_real_error1.3880e+07
Rg (倒空间) rg_reciprocal38.42
I(0) (倒空间) i0_reciprocal811100000.0000
解质量估计 total_estimate0.8968
解质量评级 solution_quality GOOD a GOOD solution
P(r) 峰数 n_peaks0
主峰位置 r_peak_primary
偏度 Skewness skewness0.253
峰度 Kurtosis kurtosis-0.541
角度范围 angular_range— – 0.2050 −1
当前正则化参数 α current_alpha0.0000
最高正则化参数 α highest_alpha266600000.0000
实空间数据点数 n_real_points42
GNOM 版本 gnom_version4.1.3
质量判据 quality_criteria AN1: 0.000; Oscil: 0.903; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.998; Smooth: 0.948

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

6. 实体与聚合物信息 Entities & Polymers (12)

8. 引用文献 (1)

9. 文件与曲线 (10)