1ef0
CRYSTAL STRUCTURE OF PI-SCEI MINIPRECURSOR
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 | 2 / 0 / 0 / 0 | 与蛋白数一致 |
| 2 | 蛋白同源多聚体 | 同源多聚体 | 2 / 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 | 1ef0 |
| 沉积日期 deposition_date | 2000-02-04 |
| 结构标题 title | CRYSTAL STRUCTURE OF PI-SCEI MINIPRECURSOR |
| 关键词 keywords | endonuclease, protein splicing, mini-precursor, 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。
1ef0__assembly_2__model_1
Assembly 2 · Model 1 · CRYSOL 4.1.3-1-20251215 (887e7ef)
1ef0__assembly_2__model_1 | I(q)
1ef0__assembly_2__model_1 | P(r) · Pending
| Rg（Guinier） | 33.25 Å |
| Rg（电子密度） | 32.82 Å |
| 总 Rg | 33.30 Å |
| 原子数 | 6442 |
| 残基数 | 819 |
| 排除体积 | 114730 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) 11 domains
SCOP 2.08 (6 domains)
| 结构域编号 domain_id | d1ef0a1 |
| 类 Class class | b — All beta proteins |
| 折叠类型 Fold fold | b.86 — Hedgehog/intein (Hint) domain |
| 超家族 Superfamily superfamily | b.86.1 — Hedgehog/intein (Hint) domain |
| 家族 Family family | b.86.1.2 — Intein (protein splicing domain) |
| 结构域编号 domain_id | d1ef0a2 |
| 类 Class class | d — Alpha and beta proteins (a+b) |
| 折叠类型 Fold fold | d.95 — Homing endonuclease-like |
| 超家族 Superfamily superfamily | d.95.2 — Homing endonucleases |
| 家族 Family family | d.95.2.2 — Intein endonuclease |
| 结构域编号 domain_id | d1ef0a3 |
| 类 Class class | d — Alpha and beta proteins (a+b) |
| 折叠类型 Fold fold | d.95 — Homing endonuclease-like |
| 超家族 Superfamily superfamily | d.95.2 — Homing endonucleases |
| 家族 Family family | d.95.2.2 — Intein endonuclease |
| 结构域编号 domain_id | d1ef0b1 |
| 类 Class class | b — All beta proteins |
| 折叠类型 Fold fold | b.86 — Hedgehog/intein (Hint) domain |
| 超家族 Superfamily superfamily | b.86.1 — Hedgehog/intein (Hint) domain |
| 家族 Family family | b.86.1.2 — Intein (protein splicing domain) |
| 结构域编号 domain_id | d1ef0b2 |
| 类 Class class | d — Alpha and beta proteins (a+b) |
| 折叠类型 Fold fold | d.95 — Homing endonuclease-like |
| 超家族 Superfamily superfamily | d.95.2 — Homing endonucleases |
| 家族 Family family | d.95.2.2 — Intein endonuclease |
| 结构域编号 domain_id | d1ef0b3 |
| 类 Class class | d — Alpha and beta proteins (a+b) |
| 折叠类型 Fold fold | d.95 — Homing endonuclease-like |
| 超家族 Superfamily superfamily | d.95.2 — Homing endonucleases |
| 家族 Family family | d.95.2.2 — Intein endonuclease |
CATH v4.4 (5 domains)
| 结构域编号 domain_id | 1ef0A01 |
| 类 Class class | 2 — Mainly Beta |
| 架构 Architecture architecture | 170 — Beta Complex |
| 拓扑 Topology topology | 16 — Endonuclease - Pi-scei; Chain A, domain 1 |
| 同源超家族 H-superfamily homologous superfamily | 10 — Hedgehog/Intein (Hint) domain |
| 结构域编号 domain_id | 1ef0A02 |
| 类 Class class | 3 — Alpha Beta |
| 架构 Architecture architecture | 10 — Roll |
| 拓扑 Topology topology | 28 — Endonuclease I-creI |
| 同源超家族 H-superfamily homologous superfamily | 10 — Homing endonucleases |
| 结构域编号 domain_id | 1ef0A03 |
| 类 Class class | 3 — Alpha Beta |
| 架构 Architecture architecture | 10 — Roll |
| 拓扑 Topology topology | 28 — Endonuclease I-creI |
| 同源超家族 H-superfamily homologous superfamily | 10 — Homing endonucleases |
| 结构域编号 domain_id | 1ef0B01 |
| 类 Class class | 2 — Mainly Beta |
| 架构 Architecture architecture | 170 — Beta Complex |
| 拓扑 Topology topology | 16 — Endonuclease - Pi-scei; Chain A, domain 1 |
| 同源超家族 H-superfamily homologous superfamily | 10 — Hedgehog/Intein (Hint) domain |
| 结构域编号 domain_id | 1ef0B02 |
| 类 Class class | 3 — Alpha Beta |
| 架构 Architecture architecture | 10 — Roll |
| 拓扑 Topology topology | 28 — Endonuclease I-creI |
| 同源超家族 H-superfamily homologous superfamily | 10 — Homing endonucleases |