1gkq
D-Hydantoinase (Dihydropyrimidinase) from Thermus sp. in space group P212121
1. 蛋白身份与相关结构 Protein Identity & Related Structures
当前条目没有可用的 UniProt 蛋白身份。
七张关系表仍保留该条目的 assembly 与组成信息，但缺少统一蛋白身份时，不能可靠建立跨 PDB 的同蛋白链接。
当前条目的 assembly 组成
| Assembly | 物理组成 | 蛋白状态 | 蛋白 / DNA / RNA / 其他聚合物 | 数据核对 |
|---|---|---|---|---|
| 1 | 蛋白同源多聚体 | 同源多聚体 | 4 / 0 / 0 / 0 | 与蛋白数一致 |
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。
2. 结构基本信息 2. Structure Basics
| 条目编号 entry_id | 1gkq |
| 沉积日期 deposition_date | 2001-08-20 |
| 结构标题 title | D-Hydantoinase (Dihydropyrimidinase) from Thermus sp. in space group P212121 |
| 关键词 keywords | HYDROLASE, HYDANTOINASE, DIHYDROPYRIMIDINASE, CYCLIC AMIDASE; HYDROLASE |
| 实验方法 method | X-RAY DIFFRACTION |
3. Official assembly/model 理论 SAXS Official SAXS Profiles
页面只读取最新 assembly 计算结果。每一条曲线都对应明确的 PDB、official biological assembly 和 coordinate model。
1gkq__assembly_1__model_1
Assembly 1 · Model 1 · CRYSOL 4.1.3-1-20251215 (887e7ef)
1gkq__assembly_1__model_1 | I(q)
1gkq__assembly_1__model_1 | P(r) · Pending
| Rg（Guinier） | 37.59 Å |
| Rg（电子密度） | 36.86 Å |
| 总 Rg | 37.29 Å |
| 原子数 | 14312 |
| 残基数 | 1828 |
| 排除体积 | 254640 ų |
| 最大 q | 0.500 Å⁻¹ |
4. 晶体学与实验 4. Crystallography & Experiment
5. 实体与聚合物信息 Entities & Polymers (3)
6. 折叠分类 (SCOP + CATH) 16 domains
SCOP 2.08 (8 domains)
| 结构域编号 domain_id | d1gkqa1 |
| 类 Class class | b — All beta proteins |
| 折叠类型 Fold fold | b.92 — Composite domain of metallo-dependent hydrolases |
| 超家族 Superfamily superfamily | b.92.1 — Composite domain of metallo-dependent hydrolases |
| 家族 Family family | b.92.1.3 — Hydantoinase (dihydropyrimidinase) |
| 结构域编号 domain_id | d1gkqa2 |
| 类 Class class | c — Alpha and beta proteins (a/b) |
| 折叠类型 Fold fold | c.1 — TIM beta/alpha-barrel |
| 超家族 Superfamily superfamily | c.1.9 — Metallo-dependent hydrolases |
| 家族 Family family | c.1.9.6 — Hydantoinase (dihydropyrimidinase), catalytic domain |
| 结构域编号 domain_id | d1gkqb1 |
| 类 Class class | b — All beta proteins |
| 折叠类型 Fold fold | b.92 — Composite domain of metallo-dependent hydrolases |
| 超家族 Superfamily superfamily | b.92.1 — Composite domain of metallo-dependent hydrolases |
| 家族 Family family | b.92.1.3 — Hydantoinase (dihydropyrimidinase) |
| 结构域编号 domain_id | d1gkqb2 |
| 类 Class class | c — Alpha and beta proteins (a/b) |
| 折叠类型 Fold fold | c.1 — TIM beta/alpha-barrel |
| 超家族 Superfamily superfamily | c.1.9 — Metallo-dependent hydrolases |
| 家族 Family family | c.1.9.6 — Hydantoinase (dihydropyrimidinase), catalytic domain |
| 结构域编号 domain_id | d1gkqc1 |
| 类 Class class | b — All beta proteins |
| 折叠类型 Fold fold | b.92 — Composite domain of metallo-dependent hydrolases |
| 超家族 Superfamily superfamily | b.92.1 — Composite domain of metallo-dependent hydrolases |
| 家族 Family family | b.92.1.3 — Hydantoinase (dihydropyrimidinase) |
| 结构域编号 domain_id | d1gkqc2 |
| 类 Class class | c — Alpha and beta proteins (a/b) |
| 折叠类型 Fold fold | c.1 — TIM beta/alpha-barrel |
| 超家族 Superfamily superfamily | c.1.9 — Metallo-dependent hydrolases |
| 家族 Family family | c.1.9.6 — Hydantoinase (dihydropyrimidinase), catalytic domain |
| 结构域编号 domain_id | d1gkqd1 |
| 类 Class class | b — All beta proteins |
| 折叠类型 Fold fold | b.92 — Composite domain of metallo-dependent hydrolases |
| 超家族 Superfamily superfamily | b.92.1 — Composite domain of metallo-dependent hydrolases |
| 家族 Family family | b.92.1.3 — Hydantoinase (dihydropyrimidinase) |
| 结构域编号 domain_id | d1gkqd2 |
| 类 Class class | c — Alpha and beta proteins (a/b) |
| 折叠类型 Fold fold | c.1 — TIM beta/alpha-barrel |
| 超家族 Superfamily superfamily | c.1.9 — Metallo-dependent hydrolases |
| 家族 Family family | c.1.9.6 — Hydantoinase (dihydropyrimidinase), catalytic domain |
CATH v4.4 (8 domains)
| 结构域编号 domain_id | 1gkqA01 |
| 类 Class class | 2 — Mainly Beta |
| 架构 Architecture architecture | 30 — Roll |
| 拓扑 Topology topology | 40 — Urease, subunit C; domain 1 |
| 同源超家族 H-superfamily homologous superfamily | 10 — Urease, subunit C, domain 1 |
| 结构域编号 domain_id | 1gkqA02 |
| 类 Class class | 3 — Alpha Beta |
| 架构 Architecture architecture | 20 — Alpha-Beta Barrel |
| 拓扑 Topology topology | 20 — TIM Barrel |
| 同源超家族 H-superfamily homologous superfamily | 140 — Metal-dependent hydrolases |
| 结构域编号 domain_id | 1gkqB01 |
| 类 Class class | 2 — Mainly Beta |
| 架构 Architecture architecture | 30 — Roll |
| 拓扑 Topology topology | 40 — Urease, subunit C; domain 1 |
| 同源超家族 H-superfamily homologous superfamily | 10 — Urease, subunit C, domain 1 |
| 结构域编号 domain_id | 1gkqB02 |
| 类 Class class | 3 — Alpha Beta |
| 架构 Architecture architecture | 20 — Alpha-Beta Barrel |
| 拓扑 Topology topology | 20 — TIM Barrel |
| 同源超家族 H-superfamily homologous superfamily | 140 — Metal-dependent hydrolases |
| 结构域编号 domain_id | 1gkqC01 |
| 类 Class class | 2 — Mainly Beta |
| 架构 Architecture architecture | 30 — Roll |
| 拓扑 Topology topology | 40 — Urease, subunit C; domain 1 |
| 同源超家族 H-superfamily homologous superfamily | 10 — Urease, subunit C, domain 1 |
| 结构域编号 domain_id | 1gkqC02 |
| 类 Class class | 3 — Alpha Beta |
| 架构 Architecture architecture | 20 — Alpha-Beta Barrel |
| 拓扑 Topology topology | 20 — TIM Barrel |
| 同源超家族 H-superfamily homologous superfamily | 140 — Metal-dependent hydrolases |
| 结构域编号 domain_id | 1gkqD01 |
| 类 Class class | 2 — Mainly Beta |
| 架构 Architecture architecture | 30 — Roll |
| 拓扑 Topology topology | 40 — Urease, subunit C; domain 1 |
| 同源超家族 H-superfamily homologous superfamily | 10 — Urease, subunit C, domain 1 |
| 结构域编号 domain_id | 1gkqD02 |
| 类 Class class | 3 — Alpha Beta |
| 架构 Architecture architecture | 20 — Alpha-Beta Barrel |
| 拓扑 Topology topology | 20 — TIM Barrel |
| 同源超家族 H-superfamily homologous superfamily | 140 — Metal-dependent hydrolases |