precursor of cephalosporin acylase
Brevundimonas diminuta
当前结构中的状态
| Assembly | 物理组成 | 蛋白状态 | 分子拷贝数 | 共同组分 | 数据核对 |
|---|---|---|---|---|---|
| 1 | 蛋白单体 | 单体 | 蛋白 1 | water × 1 | 与蛋白数一致 |
数据库中的同蛋白其他状态
查看构建体与数据证据
| UniProt名称 | G7AC_BREDI |
| Isoform | — |
| PDB实体 | 1 |
| 链与序列区间 | 作者链 A； PDB构建体 1–689； UniProt 30–718 |
1keh
Precursor structure of cephalosporin acylase
1. 蛋白身份与相关结构 Protein Identity & Related Structures
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 | 1keh |
| 沉积日期 deposition_date | 2001-11-16 |
| 结构标题 title | Precursor structure of cephalosporin acylase |
| 关键词 keywords | cephalosporin acylase, precursor, glutaryl-7-ACA, HYDROLASE; 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。
1keh__assembly_1__model_1
Assembly 1 · Model 1 · CRYSOL 4.1.3-1-20251215 (887e7ef)
1keh__assembly_1__model_1 | I(q)
1keh__assembly_1__model_1 | P(r) · Pending
| Rg（Guinier） | 26.67 Å |
| Rg（电子密度） | 25.65 Å |
| 总 Rg | 26.47 Å |
| 原子数 | 5374 |
| 残基数 | 683 |
| 排除体积 | 94051 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 (2)
6. 折叠分类 (SCOP + CATH) 5 domains
SCOP 2.08 (1 domains)
| 结构域编号 domain_id | d1keha_ |
| 类 Class class | d — Alpha and beta proteins (a+b) |
| 折叠类型 Fold fold | d.153 — Ntn hydrolase-like |
| 超家族 Superfamily superfamily | d.153.1 — N-terminal nucleophile aminohydrolases (Ntn hydrolases) |
| 家族 Family family | d.153.1.2 — Penicillin acylase, catalytic domain |
CATH v4.4 (4 domains)
| 结构域编号 domain_id | 1kehA01 |
| 类 Class class | 3 — Alpha Beta |
| 架构 Architecture architecture | 60 — 4-Layer Sandwich |
| 拓扑 Topology topology | 20 — Glutamine Phosphoribosylpyrophosphate, subunit 1, domain 1 |
| 同源超家族 H-superfamily homologous superfamily | 10 — Aminohydrolase, N-terminal nucleophile (Ntn) domain |
| 结构域编号 domain_id | 1kehA02 |
| 类 Class class | 1 — Mainly Alpha |
| 架构 Architecture architecture | 10 — Orthogonal Bundle |
| 拓扑 Topology topology | 439 — Penicillin Amidohydrolase; domain 1 |
| 同源超家族 H-superfamily homologous superfamily | 10 — Penicillin Amidohydrolase, domain 1 |
| 结构域编号 domain_id | 1kehA03 |
| 类 Class class | 2 — Mainly Beta |
| 架构 Architecture architecture | 30 — Roll |
| 拓扑 Topology topology | 120 — Penicillin G acylase, beta-roll domain |
| 同源超家族 H-superfamily homologous superfamily | 10 — Aminohydrolase, N-terminal nucleophile (Ntn) domain, beta-sheet knob region |
| 结构域编号 domain_id | 1kehA04 |
| 类 Class class | 1 — Mainly Alpha |
| 架构 Architecture architecture | 10 — Orthogonal Bundle |
| 拓扑 Topology topology | 1400 — Penicillin amidase (Acylase) alpha subunit, N-terminal domain |
| 同源超家族 H-superfamily homologous superfamily | 10 — Aminohydrolase, alpha-helical knob region |