Escherichia coli
| 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–DNA | 同源多聚体 | 蛋白 2 DNA 2 | ;DNA (5'-D(*GP*AP*AP*T*TP*GP*TP*GP*AP*GP*CP*GP*CP*TP*CP*AP*CP*AP*AP*TP*T)-3') ; × 2 2-nitrophenyl beta-D-fucopyranoside × 2 water × 2 | 与全部聚合物一致 |
| 2 | 蛋白单体 | 单体 | 蛋白 1 | 2-nitrophenyl beta-D-fucopyranoside × 1 water × 1 | 与蛋白数一致 |
| UniProt名称 | LACI_ECOLI |
| Isoform | — |
| PDB实体 | 2 |
| 链与序列区间 | 作者链 A； PDB构建体 1–333； UniProt 1–333 作者链 B； PDB构建体 1–333； UniProt 1–333 作者链 C； PDB构建体 1–333； UniProt 1–333 |
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。
| 条目编号 entry_id | 1efa |
| 沉积日期 deposition_date | 2000-02-07 |
| 结构标题 title | CRYSTAL STRUCTURE OF THE LAC REPRESSOR DIMER BOUND TO OPERATOR AND THE ANTI-INDUCER ONPF |
| 关键词 keywords | protein-dna complex, helix-turn-helix, gene regulation, molecular switch, TRANSCRIPTION-DNA COMPLEX; TRANSCRIPTION/DNA |
| 实验方法 method | X-RAY DIFFRACTION |
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。
Assembly 1 · Model 1 · CRYSOL 4.1.3-1-20251215 (887e7ef)
| Rg（Guinier） | 30.98 Å |
| Rg（电子密度） | 29.63 Å |
| 总 Rg | 30.28 Å |
| 原子数 | 5611 |
| 残基数 | 692 |
| 排除体积 | 97561 ų |
| 最大 q | 0.500 Å⁻¹ |
| 结构域编号 domain_id | d1efaa1 |
| 类 Class class | a — All alpha proteins |
| 折叠类型 Fold fold | a.35 — lambda repressor-like DNA-binding domains |
| 超家族 Superfamily superfamily | a.35.1 — lambda repressor-like DNA-binding domains |
| 家族 Family family | a.35.1.5 — GalR/LacI-like bacterial regulator |
| 结构域编号 domain_id | d1efaa2 |
| 类 Class class | c — Alpha and beta proteins (a/b) |
| 折叠类型 Fold fold | c.93 — Periplasmic binding protein-like I |
| 超家族 Superfamily superfamily | c.93.1 — Periplasmic binding protein-like I |
| 家族 Family family | c.93.1.1 — L-arabinose binding protein-like |
| 结构域编号 domain_id | d1efab1 |
| 类 Class class | a — All alpha proteins |
| 折叠类型 Fold fold | a.35 — lambda repressor-like DNA-binding domains |
| 超家族 Superfamily superfamily | a.35.1 — lambda repressor-like DNA-binding domains |
| 家族 Family family | a.35.1.5 — GalR/LacI-like bacterial regulator |
| 结构域编号 domain_id | d1efab2 |
| 类 Class class | c — Alpha and beta proteins (a/b) |
| 折叠类型 Fold fold | c.93 — Periplasmic binding protein-like I |
| 超家族 Superfamily superfamily | c.93.1 — Periplasmic binding protein-like I |
| 家族 Family family | c.93.1.1 — L-arabinose binding protein-like |
| 结构域编号 domain_id | d1efac1 |
| 类 Class class | a — All alpha proteins |
| 折叠类型 Fold fold | a.35 — lambda repressor-like DNA-binding domains |
| 超家族 Superfamily superfamily | a.35.1 — lambda repressor-like DNA-binding domains |
| 家族 Family family | a.35.1.5 — GalR/LacI-like bacterial regulator |
| 结构域编号 domain_id | d1efac2 |
| 类 Class class | c — Alpha and beta proteins (a/b) |
| 折叠类型 Fold fold | c.93 — Periplasmic binding protein-like I |
| 超家族 Superfamily superfamily | c.93.1 — Periplasmic binding protein-like I |
| 家族 Family family | c.93.1.1 — L-arabinose binding protein-like |
| 结构域编号 domain_id | 1efaA01 |
| 类 Class class | 1 — Mainly Alpha |
| 架构 Architecture architecture | 10 — Orthogonal Bundle |
| 拓扑 Topology topology | 260 — 434 Repressor (Amino-terminal Domain) |
| 同源超家族 H-superfamily homologous superfamily | 40 — lambda repressor-like DNA-binding domains |
| 结构域编号 domain_id | 1efaA02 |
| 类 Class class | 3 — Alpha Beta |
| 架构 Architecture architecture | 40 — 3-Layer(aba) Sandwich |
| 拓扑 Topology topology | 50 — Rossmann fold |
| 同源超家族 H-superfamily homologous superfamily | 2300 — Response regulator |
| 结构域编号 domain_id | 1efaA03 |
| 类 Class class | 3 — Alpha Beta |
| 架构 Architecture architecture | 40 — 3-Layer(aba) Sandwich |
| 拓扑 Topology topology | 50 — Rossmann fold |
| 同源超家族 H-superfamily homologous superfamily | 2300 — Response regulator |
| 结构域编号 domain_id | 1efaB01 |
| 类 Class class | 1 — Mainly Alpha |
| 架构 Architecture architecture | 10 — Orthogonal Bundle |
| 拓扑 Topology topology | 260 — 434 Repressor (Amino-terminal Domain) |
| 同源超家族 H-superfamily homologous superfamily | 40 — lambda repressor-like DNA-binding domains |
| 结构域编号 domain_id | 1efaB02 |
| 类 Class class | 3 — Alpha Beta |
| 架构 Architecture architecture | 40 — 3-Layer(aba) Sandwich |
| 拓扑 Topology topology | 50 — Rossmann fold |
| 同源超家族 H-superfamily homologous superfamily | 2300 — Response regulator |
| 结构域编号 domain_id | 1efaB03 |
| 类 Class class | 3 — Alpha Beta |
| 架构 Architecture architecture | 40 — 3-Layer(aba) Sandwich |
| 拓扑 Topology topology | 50 — Rossmann fold |
| 同源超家族 H-superfamily homologous superfamily | 2300 — Response regulator |
| 结构域编号 domain_id | 1efaC01 |
| 类 Class class | 3 — Alpha Beta |
| 架构 Architecture architecture | 40 — 3-Layer(aba) Sandwich |
| 拓扑 Topology topology | 50 — Rossmann fold |
| 同源超家族 H-superfamily homologous superfamily | 2300 — Response regulator |
| 结构域编号 domain_id | 1efaC02 |
| 类 Class class | 3 — Alpha Beta |
| 架构 Architecture architecture | 40 — 3-Layer(aba) Sandwich |
| 拓扑 Topology topology | 50 — Rossmann fold |
| 同源超家族 H-superfamily homologous superfamily | 2300 — Response regulator |