1fbx

CRYSTAL STRUCTURE OF ZINC-CONTAINING E.COLI GTP CYCLOHYDROLASE I

Method: X-RAY DIFFRACTION

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1. 蛋白身份与相关结构 Protein Identity & Related Structures

GTP CYCLOHYDROLASE I

Escherichia coli

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	蛋白同源多聚体	同源多聚体	蛋白 10	ZINC ION × 10 CHLORIDE ION × 10 water × 10	与蛋白数一致
2	蛋白同源多聚体	同源多聚体	蛋白 10	ZINC ION × 10 CHLORIDE ION × 10 water × 10	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	GCH1_ECOLI
Isoform	—
PDB实体	1
链与序列区间	作者链 A； PDB构建体 1–221； UniProt 2–222 作者链 B； PDB构建体 1–221； UniProt 2–222 作者链 C； PDB构建体 1–221； UniProt 2–222 作者链 D； PDB构建体 1–221； UniProt 2–222 作者链 E； PDB构建体 1–221； UniProt 2–222 作者链 F； PDB构建体 1–221； UniProt 2–222 作者链 G； PDB构建体 1–221； UniProt 2–222 作者链 H； PDB构建体 1–221； UniProt 2–222 作者链 I； PDB构建体 1–221； UniProt 2–222 作者链 J； PDB构建体 1–221； UniProt 2–222 作者链 K； PDB构建体 1–221； UniProt 2–222 作者链 L； PDB构建体 1–221； UniProt 2–222 作者链 M； PDB构建体 1–221； UniProt 2–222 作者链 N； PDB构建体 1–221； UniProt 2–222 作者链 O； PDB构建体 1–221； UniProt 2–222

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。

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2. 结构基本信息 2. Structure Basics

条目编号 entry_id	1fbx
沉积日期 deposition_date	2000-07-17
结构标题 title	CRYSTAL STRUCTURE OF ZINC-CONTAINING E.COLI GTP CYCLOHYDROLASE I
关键词 keywords	HYDROLASE, ALLOSTERIC ENZYME; HYDROLASE
实验方法 method	X-RAY DIFFRACTION

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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。

1fbx__assembly_1__model_1

Assembly 1 · Model 1 · CRYSOL 4.1.3-1-20251215 (887e7ef)

下载该曲线 .dat

1fbx__assembly_1__model_1 | I(q)

100 个绘图点；横轴和纵轴均采用对数尺度。

1fbx__assembly_1__model_1 | P(r) · Pending

P(r) 将按相同 assembly/model 分别计算和展示。

Rg（Guinier）	38.10 Å
Rg（电子密度）	37.32 Å
总 Rg	37.87 Å
原子数	17340
残基数	2210
排除体积	309950 Å³
最大 q	0.500 Å⁻¹

Assembly	Model	结构单元	聚集说明	状态	CRYSOL	操作
1	1	`1fbx__assembly_1__model_1`	decameric （10）	成功	4.1.3-1-20251215 (887e7ef)	查看下载
2	1	`1fbx__assembly_2__model_1`	decameric （10）	成功	4.1.3-1-20251215 (887e7ef)	查看下载

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4. 晶体学与实验 4. Crystallography & Experiment

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5. 实体与聚合物信息 Entities & Polymers (4)

实体 1 Entity 1 polymer

描述 description	GTP CYCLOHYDROLASE I
分子量 formula_weight	24733.5 kDa
EC 编号 ec_number	3.5.4.16
来源方法 src_method	man
拷贝数 entity_count	15

聚合物 Polymer

聚合物类型 type	polypeptide(L)
链编号 strand_id	A,B,C,D,E,F,G,H,I,J,K,L,M,N,O
原子数 atom_count	26025

PSLSKEAALVHEALVARGLETPLRPPVHEMDNETRKSLIAGHMTEIMQLLNLDLADDSLMETPHRIAKMYVDEIFSGLDYANFPKITLIENKMKVDEMVTVRDITLTSTCEHHFVTIDGKATVAYIPKDSVIGLSKINRIVQFFAQRPQVQERLTQQILIALQTLLGTNNVAVSIDAVHYCVKARGIRDATSATTTTSLGGLFKSSQNTRHEFLRAVRHHN

来源 Source

来源生物 organism	Escherichia coli
NCBI 分类编号 ncbi_taxonomy_id	562
宿主生物 host_organism	Escherichia coli

实体 2 Entity 2 non-polymer

描述 description	ZINC ION
分子量 formula_weight	65.4 kDa
来源方法 src_method	syn
拷贝数 entity_count	15

实体 3 Entity 3 non-polymer

描述 description	CHLORIDE ION
分子量 formula_weight	35.5 kDa
来源方法 src_method	syn
拷贝数 entity_count	15

实体 4 Entity 4 water

描述 description	water
分子量 formula_weight	18.0 kDa
来源方法 src_method	nat
拷贝数 entity_count	15

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6. 折叠分类 (SCOP + CATH) 45 domains

SCOP 2.08 (15 domains)

结构域编号 domain_id	d1fbxa_
类 Class class	d — Alpha and beta proteins (a+b)
折叠类型 Fold fold	d.96 — T-fold
超家族 Superfamily superfamily	d.96.1 — Tetrahydrobiopterin biosynthesis enzymes-like
家族 Family family	d.96.1.1 — GTP cyclohydrolase I

结构域编号 domain_id	d1fbxb_
类 Class class	d — Alpha and beta proteins (a+b)
折叠类型 Fold fold	d.96 — T-fold
超家族 Superfamily superfamily	d.96.1 — Tetrahydrobiopterin biosynthesis enzymes-like
家族 Family family	d.96.1.1 — GTP cyclohydrolase I

结构域编号 domain_id	d1fbxc_
类 Class class	d — Alpha and beta proteins (a+b)
折叠类型 Fold fold	d.96 — T-fold
超家族 Superfamily superfamily	d.96.1 — Tetrahydrobiopterin biosynthesis enzymes-like
家族 Family family	d.96.1.1 — GTP cyclohydrolase I

结构域编号 domain_id	d1fbxd_
类 Class class	d — Alpha and beta proteins (a+b)
折叠类型 Fold fold	d.96 — T-fold
超家族 Superfamily superfamily	d.96.1 — Tetrahydrobiopterin biosynthesis enzymes-like
家族 Family family	d.96.1.1 — GTP cyclohydrolase I

结构域编号 domain_id	d1fbxe_
类 Class class	d — Alpha and beta proteins (a+b)
折叠类型 Fold fold	d.96 — T-fold
超家族 Superfamily superfamily	d.96.1 — Tetrahydrobiopterin biosynthesis enzymes-like
家族 Family family	d.96.1.1 — GTP cyclohydrolase I

结构域编号 domain_id	d1fbxf_
类 Class class	d — Alpha and beta proteins (a+b)
折叠类型 Fold fold	d.96 — T-fold
超家族 Superfamily superfamily	d.96.1 — Tetrahydrobiopterin biosynthesis enzymes-like
家族 Family family	d.96.1.1 — GTP cyclohydrolase I

结构域编号 domain_id	d1fbxg_
类 Class class	d — Alpha and beta proteins (a+b)
折叠类型 Fold fold	d.96 — T-fold
超家族 Superfamily superfamily	d.96.1 — Tetrahydrobiopterin biosynthesis enzymes-like
家族 Family family	d.96.1.1 — GTP cyclohydrolase I

结构域编号 domain_id	d1fbxh_
类 Class class	d — Alpha and beta proteins (a+b)
折叠类型 Fold fold	d.96 — T-fold
超家族 Superfamily superfamily	d.96.1 — Tetrahydrobiopterin biosynthesis enzymes-like
家族 Family family	d.96.1.1 — GTP cyclohydrolase I

结构域编号 domain_id	d1fbxi_
类 Class class	d — Alpha and beta proteins (a+b)
折叠类型 Fold fold	d.96 — T-fold
超家族 Superfamily superfamily	d.96.1 — Tetrahydrobiopterin biosynthesis enzymes-like
家族 Family family	d.96.1.1 — GTP cyclohydrolase I

结构域编号 domain_id	d1fbxj_
类 Class class	d — Alpha and beta proteins (a+b)
折叠类型 Fold fold	d.96 — T-fold
超家族 Superfamily superfamily	d.96.1 — Tetrahydrobiopterin biosynthesis enzymes-like
家族 Family family	d.96.1.1 — GTP cyclohydrolase I

结构域编号 domain_id	d1fbxk_
类 Class class	d — Alpha and beta proteins (a+b)
折叠类型 Fold fold	d.96 — T-fold
超家族 Superfamily superfamily	d.96.1 — Tetrahydrobiopterin biosynthesis enzymes-like
家族 Family family	d.96.1.1 — GTP cyclohydrolase I

结构域编号 domain_id	d1fbxl_
类 Class class	d — Alpha and beta proteins (a+b)
折叠类型 Fold fold	d.96 — T-fold
超家族 Superfamily superfamily	d.96.1 — Tetrahydrobiopterin biosynthesis enzymes-like
家族 Family family	d.96.1.1 — GTP cyclohydrolase I

结构域编号 domain_id	d1fbxm_
类 Class class	d — Alpha and beta proteins (a+b)
折叠类型 Fold fold	d.96 — T-fold
超家族 Superfamily superfamily	d.96.1 — Tetrahydrobiopterin biosynthesis enzymes-like
家族 Family family	d.96.1.1 — GTP cyclohydrolase I

结构域编号 domain_id	d1fbxn_
类 Class class	d — Alpha and beta proteins (a+b)
折叠类型 Fold fold	d.96 — T-fold
超家族 Superfamily superfamily	d.96.1 — Tetrahydrobiopterin biosynthesis enzymes-like
家族 Family family	d.96.1.1 — GTP cyclohydrolase I

结构域编号 domain_id	d1fbxo_
类 Class class	d — Alpha and beta proteins (a+b)
折叠类型 Fold fold	d.96 — T-fold
超家族 Superfamily superfamily	d.96.1 — Tetrahydrobiopterin biosynthesis enzymes-like
家族 Family family	d.96.1.1 — GTP cyclohydrolase I

CATH v4.4 (30 domains)

结构域编号 domain_id	1fbxA01
类 Class class	1 — Mainly Alpha
架构 Architecture architecture	10 — Orthogonal Bundle
拓扑 Topology topology	286 — GTP Cyclohydrolase I; Chain A, domain 1
同源超家族 H-superfamily homologous superfamily	10 — GTP cyclohydrolase I, N-terminal domain

结构域编号 domain_id	1fbxA02
类 Class class	3 — Alpha Beta
架构 Architecture architecture	30 — 2-Layer Sandwich
拓扑 Topology topology	1130 — GTP Cyclohydrolase I, domain 2
同源超家族 H-superfamily homologous superfamily	10 — GTP cyclohydrolase I, C-terminal domain/NADPH-dependent 7-cyano-7-deazaguanine reductase, N-terminal domain

结构域编号 domain_id	1fbxB01
类 Class class	1 — Mainly Alpha
架构 Architecture architecture	10 — Orthogonal Bundle
拓扑 Topology topology	286 — GTP Cyclohydrolase I; Chain A, domain 1
同源超家族 H-superfamily homologous superfamily	10 — GTP cyclohydrolase I, N-terminal domain

结构域编号 domain_id	1fbxB02
类 Class class	3 — Alpha Beta
架构 Architecture architecture	30 — 2-Layer Sandwich
拓扑 Topology topology	1130 — GTP Cyclohydrolase I, domain 2
同源超家族 H-superfamily homologous superfamily	10 — GTP cyclohydrolase I, C-terminal domain/NADPH-dependent 7-cyano-7-deazaguanine reductase, N-terminal domain

结构域编号 domain_id	1fbxC01
类 Class class	1 — Mainly Alpha
架构 Architecture architecture	10 — Orthogonal Bundle
拓扑 Topology topology	286 — GTP Cyclohydrolase I; Chain A, domain 1
同源超家族 H-superfamily homologous superfamily	10 — GTP cyclohydrolase I, N-terminal domain

结构域编号 domain_id	1fbxC02
类 Class class	3 — Alpha Beta
架构 Architecture architecture	30 — 2-Layer Sandwich
拓扑 Topology topology	1130 — GTP Cyclohydrolase I, domain 2
同源超家族 H-superfamily homologous superfamily	10 — GTP cyclohydrolase I, C-terminal domain/NADPH-dependent 7-cyano-7-deazaguanine reductase, N-terminal domain

结构域编号 domain_id	1fbxD01
类 Class class	1 — Mainly Alpha
架构 Architecture architecture	10 — Orthogonal Bundle
拓扑 Topology topology	286 — GTP Cyclohydrolase I; Chain A, domain 1
同源超家族 H-superfamily homologous superfamily	10 — GTP cyclohydrolase I, N-terminal domain

结构域编号 domain_id	1fbxD02
类 Class class	3 — Alpha Beta
架构 Architecture architecture	30 — 2-Layer Sandwich
拓扑 Topology topology	1130 — GTP Cyclohydrolase I, domain 2
同源超家族 H-superfamily homologous superfamily	10 — GTP cyclohydrolase I, C-terminal domain/NADPH-dependent 7-cyano-7-deazaguanine reductase, N-terminal domain

结构域编号 domain_id	1fbxE01
类 Class class	1 — Mainly Alpha
架构 Architecture architecture	10 — Orthogonal Bundle
拓扑 Topology topology	286 — GTP Cyclohydrolase I; Chain A, domain 1
同源超家族 H-superfamily homologous superfamily	10 — GTP cyclohydrolase I, N-terminal domain

结构域编号 domain_id	1fbxE02
类 Class class	3 — Alpha Beta
架构 Architecture architecture	30 — 2-Layer Sandwich
拓扑 Topology topology	1130 — GTP Cyclohydrolase I, domain 2
同源超家族 H-superfamily homologous superfamily	10 — GTP cyclohydrolase I, C-terminal domain/NADPH-dependent 7-cyano-7-deazaguanine reductase, N-terminal domain

结构域编号 domain_id	1fbxF01
类 Class class	1 — Mainly Alpha
架构 Architecture architecture	10 — Orthogonal Bundle
拓扑 Topology topology	286 — GTP Cyclohydrolase I; Chain A, domain 1
同源超家族 H-superfamily homologous superfamily	10 — GTP cyclohydrolase I, N-terminal domain

结构域编号 domain_id	1fbxF02
类 Class class	3 — Alpha Beta
架构 Architecture architecture	30 — 2-Layer Sandwich
拓扑 Topology topology	1130 — GTP Cyclohydrolase I, domain 2
同源超家族 H-superfamily homologous superfamily	10 — GTP cyclohydrolase I, C-terminal domain/NADPH-dependent 7-cyano-7-deazaguanine reductase, N-terminal domain

结构域编号 domain_id	1fbxG01
类 Class class	1 — Mainly Alpha
架构 Architecture architecture	10 — Orthogonal Bundle
拓扑 Topology topology	286 — GTP Cyclohydrolase I; Chain A, domain 1
同源超家族 H-superfamily homologous superfamily	10 — GTP cyclohydrolase I, N-terminal domain

结构域编号 domain_id	1fbxG02
类 Class class	3 — Alpha Beta
架构 Architecture architecture	30 — 2-Layer Sandwich
拓扑 Topology topology	1130 — GTP Cyclohydrolase I, domain 2
同源超家族 H-superfamily homologous superfamily	10 — GTP cyclohydrolase I, C-terminal domain/NADPH-dependent 7-cyano-7-deazaguanine reductase, N-terminal domain

结构域编号 domain_id	1fbxH01
类 Class class	1 — Mainly Alpha
架构 Architecture architecture	10 — Orthogonal Bundle
拓扑 Topology topology	286 — GTP Cyclohydrolase I; Chain A, domain 1
同源超家族 H-superfamily homologous superfamily	10 — GTP cyclohydrolase I, N-terminal domain

结构域编号 domain_id	1fbxH02
类 Class class	3 — Alpha Beta
架构 Architecture architecture	30 — 2-Layer Sandwich
拓扑 Topology topology	1130 — GTP Cyclohydrolase I, domain 2
同源超家族 H-superfamily homologous superfamily	10 — GTP cyclohydrolase I, C-terminal domain/NADPH-dependent 7-cyano-7-deazaguanine reductase, N-terminal domain

结构域编号 domain_id	1fbxI01
类 Class class	1 — Mainly Alpha
架构 Architecture architecture	10 — Orthogonal Bundle
拓扑 Topology topology	286 — GTP Cyclohydrolase I; Chain A, domain 1
同源超家族 H-superfamily homologous superfamily	10 — GTP cyclohydrolase I, N-terminal domain

结构域编号 domain_id	1fbxI02
类 Class class	3 — Alpha Beta
架构 Architecture architecture	30 — 2-Layer Sandwich
拓扑 Topology topology	1130 — GTP Cyclohydrolase I, domain 2
同源超家族 H-superfamily homologous superfamily	10 — GTP cyclohydrolase I, C-terminal domain/NADPH-dependent 7-cyano-7-deazaguanine reductase, N-terminal domain

结构域编号 domain_id	1fbxJ01
类 Class class	1 — Mainly Alpha
架构 Architecture architecture	10 — Orthogonal Bundle
拓扑 Topology topology	286 — GTP Cyclohydrolase I; Chain A, domain 1
同源超家族 H-superfamily homologous superfamily	10 — GTP cyclohydrolase I, N-terminal domain

结构域编号 domain_id	1fbxJ02
类 Class class	3 — Alpha Beta
架构 Architecture architecture	30 — 2-Layer Sandwich
拓扑 Topology topology	1130 — GTP Cyclohydrolase I, domain 2
同源超家族 H-superfamily homologous superfamily	10 — GTP cyclohydrolase I, C-terminal domain/NADPH-dependent 7-cyano-7-deazaguanine reductase, N-terminal domain

结构域编号 domain_id	1fbxK01
类 Class class	1 — Mainly Alpha
架构 Architecture architecture	10 — Orthogonal Bundle
拓扑 Topology topology	286 — GTP Cyclohydrolase I; Chain A, domain 1
同源超家族 H-superfamily homologous superfamily	10 — GTP cyclohydrolase I, N-terminal domain

结构域编号 domain_id	1fbxK02
类 Class class	3 — Alpha Beta
架构 Architecture architecture	30 — 2-Layer Sandwich
拓扑 Topology topology	1130 — GTP Cyclohydrolase I, domain 2
同源超家族 H-superfamily homologous superfamily	10 — GTP cyclohydrolase I, C-terminal domain/NADPH-dependent 7-cyano-7-deazaguanine reductase, N-terminal domain

结构域编号 domain_id	1fbxL01
类 Class class	1 — Mainly Alpha
架构 Architecture architecture	10 — Orthogonal Bundle
拓扑 Topology topology	286 — GTP Cyclohydrolase I; Chain A, domain 1
同源超家族 H-superfamily homologous superfamily	10 — GTP cyclohydrolase I, N-terminal domain

结构域编号 domain_id	1fbxL02
类 Class class	3 — Alpha Beta
架构 Architecture architecture	30 — 2-Layer Sandwich
拓扑 Topology topology	1130 — GTP Cyclohydrolase I, domain 2
同源超家族 H-superfamily homologous superfamily	10 — GTP cyclohydrolase I, C-terminal domain/NADPH-dependent 7-cyano-7-deazaguanine reductase, N-terminal domain

结构域编号 domain_id	1fbxM01
类 Class class	1 — Mainly Alpha
架构 Architecture architecture	10 — Orthogonal Bundle
拓扑 Topology topology	286 — GTP Cyclohydrolase I; Chain A, domain 1
同源超家族 H-superfamily homologous superfamily	10 — GTP cyclohydrolase I, N-terminal domain

结构域编号 domain_id	1fbxM02
类 Class class	3 — Alpha Beta
架构 Architecture architecture	30 — 2-Layer Sandwich
拓扑 Topology topology	1130 — GTP Cyclohydrolase I, domain 2
同源超家族 H-superfamily homologous superfamily	10 — GTP cyclohydrolase I, C-terminal domain/NADPH-dependent 7-cyano-7-deazaguanine reductase, N-terminal domain

结构域编号 domain_id	1fbxN01
类 Class class	1 — Mainly Alpha
架构 Architecture architecture	10 — Orthogonal Bundle
拓扑 Topology topology	286 — GTP Cyclohydrolase I; Chain A, domain 1
同源超家族 H-superfamily homologous superfamily	10 — GTP cyclohydrolase I, N-terminal domain

结构域编号 domain_id	1fbxN02
类 Class class	3 — Alpha Beta
架构 Architecture architecture	30 — 2-Layer Sandwich
拓扑 Topology topology	1130 — GTP Cyclohydrolase I, domain 2
同源超家族 H-superfamily homologous superfamily	10 — GTP cyclohydrolase I, C-terminal domain/NADPH-dependent 7-cyano-7-deazaguanine reductase, N-terminal domain

结构域编号 domain_id	1fbxO01
类 Class class	1 — Mainly Alpha
架构 Architecture architecture	10 — Orthogonal Bundle
拓扑 Topology topology	286 — GTP Cyclohydrolase I; Chain A, domain 1
同源超家族 H-superfamily homologous superfamily	10 — GTP cyclohydrolase I, N-terminal domain

结构域编号 domain_id	1fbxO02
类 Class class	3 — Alpha Beta
架构 Architecture architecture	30 — 2-Layer Sandwich
拓扑 Topology topology	1130 — GTP Cyclohydrolase I, domain 2
同源超家族 H-superfamily homologous superfamily	10 — GTP cyclohydrolase I, C-terminal domain/NADPH-dependent 7-cyano-7-deazaguanine reductase, N-terminal domain

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晶胞边长 a length_a	227.690 Å
晶胞边长 b length_b	314.190 Å
晶胞边长 c length_c	132.570 Å
晶胞夹角 α angle_alpha	90.00 °
晶胞夹角 β angle_beta	90.00 °
晶胞夹角 γ angle_gamma	90.00 °
晶胞分子数 Z z_pdb	120

空间群 space_group	C 2 2 21
空间群编号 int_tables_number	20
晶系 crystal_system	—

分辨率 resolution	2.800 Å
最低分辨率 resolution_low	14.980 Å
R 因子 r_factor	0.2020
R_work r_work	0.2020
R_free r_free	0.2510

CRYSTAL STRUCTURE OF ZINC-CONTAINING E.COLI GTP CYCLOHYDROLASE I

1. 蛋白身份与相关结构 Protein Identity & Related Structures

GTP CYCLOHYDROLASE I

当前结构中的状态

数据库中的同蛋白其他状态

2. 结构基本信息 2. Structure Basics

3. Official assembly/model 理论 SAXS Official SAXS Profiles

1fbx__assembly_1__model_1

1fbx__assembly_1__model_1 | I(q)

1fbx__assembly_1__model_1 | P(r) · Pending

4. 晶体学与实验 4. Crystallography & Experiment

晶胞参数 Unit Cell

对称性 Symmetry

精修参数 Refinement

衍射实验 Diffraction

5. 实体与聚合物信息 Entities & Polymers (4)

实体 1 Entity 1 polymer

聚合物 Polymer

来源 Source

实体 2 Entity 2 non-polymer

实体 3 Entity 3 non-polymer

实体 4 Entity 4 water

6. 折叠分类 (SCOP + CATH) 45 domains

SCOP 2.08 (15 domains)

CATH v4.4 (30 domains)

7. 引用文献 (1)

CRYSTAL STRUCTURE OF ZINC-CONTAINING E.COLI GTP CYCLOHYDROLASE I

1. 蛋白身份与相关结构 Protein Identity & Related Structures

GTP CYCLOHYDROLASE I

当前结构中的状态

数据库中的同蛋白其他状态

单体

同源二聚体

同源四聚体

其他同源多聚体

异源或核酸复合物

2. 结构基本信息 2. Structure Basics

3. Official assembly/model 理论 SAXS Official SAXS Profiles

1fbx__assembly_1__model_1

1fbx__assembly_1__model_1 | I(q)

1fbx__assembly_1__model_1 | P(r) · Pending

4. 晶体学与实验 4. Crystallography & Experiment

晶胞参数 Unit Cell

对称性 Symmetry

精修参数 Refinement

衍射实验 Diffraction

5. 实体与聚合物信息 Entities & Polymers (4)

实体 1 Entity 1 polymer

聚合物 Polymer

来源 Source

实体 2 Entity 2 non-polymer

实体 3 Entity 3 non-polymer

实体 4 Entity 4 water

6. 折叠分类 (SCOP + CATH) 45 domains

SCOP 2.08 (15 domains)

CATH v4.4 (30 domains)

7. 引用文献 (1)