Dihydrofolate reductase
Escherichia coli K-12
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 | 蛋白异源复合物 | 异源复合物 | 蛋白 2 | Nanobody × 1 water × 2 | 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 | DYR_ECOLI |
| Isoform | — |
| PDB实体 | 1 |
| 链与序列区间 | 作者链 A； PDB构建体 1–159； UniProt 1–159 |
3k74
Disruption of protein dynamics by an allosteric effector antibody
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 | 3k74 |
| 沉积日期 deposition_date | 2009-10-12 |
| 结构标题 title | Disruption of protein dynamics by an allosteric effector antibody |
| 关键词 keywords | ;Immunoglobulin, protein-nanobody complex, Antibiotic resistance, Methotrexate resistance, NADP, One-carbon metabolism, Oxidoreductase, Trimethoprim resistance ;; OXIDOREDUCTASE |
| 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。
3k74__assembly_1__model_1
Assembly 1 · Model 1 · CRYSOL 4.1.3-1-20251215 (887e7ef)
3k74__assembly_1__model_1 | I(q)
3k74__assembly_1__model_1 | P(r) · Pending
| Rg（Guinier） | 21.65 Å |
| Rg（电子密度） | 20.74 Å |
| 总 Rg | 21.62 Å |
| 原子数 | 2149 |
| 残基数 | 274 |
| 排除体积 | 38034 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) 4 domains
SCOP 2.08 (2 domains)
| 结构域编号 domain_id | d3k74a_ |
| 类 Class class | c — Alpha and beta proteins (a/b) |
| 折叠类型 Fold fold | c.71 — Dihydrofolate reductase-like |
| 超家族 Superfamily superfamily | c.71.1 — Dihydrofolate reductase-like |
| 家族 Family family | c.71.1.1 — Dihydrofolate reductases |
| 结构域编号 domain_id | d3k74b_ |
| 类 Class class | b — All beta proteins |
| 折叠类型 Fold fold | b.1 — Immunoglobulin-like beta-sandwich |
| 超家族 Superfamily superfamily | b.1.1 — Immunoglobulin |
| 家族 Family family | b.1.1.1 — V set domains (antibody variable domain-like) |
CATH v4.4 (2 domains)
| 结构域编号 domain_id | 3k74A00 |
| 类 Class class | 3 — Alpha Beta |
| 架构 Architecture architecture | 40 — 3-Layer(aba) Sandwich |
| 拓扑 Topology topology | 430 — Dihydrofolate Reductase, subunit A |
| 同源超家族 H-superfamily homologous superfamily | 10 — Dihydrofolate Reductase, subunit A |
| 结构域编号 domain_id | 3k74B00 |
| 类 Class class | 2 — Mainly Beta |
| 架构 Architecture architecture | 60 — Sandwich |
| 拓扑 Topology topology | 40 — Immunoglobulin-like |
| 同源超家族 H-superfamily homologous superfamily | 10 — Immunoglobulins |