6hmy

Cholera toxin classical B-pentamer in complex with fucosyl-GM1

Method: X-RAY DIFFRACTION

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

Cholera enterotoxin B-subunit

Vibrio cholerae

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	其他组合	同源多聚体	蛋白 5 其他聚合物 5	;alpha-L-fucopyranose-(1-2)-beta-D-galactopyranose-(1-3)-2-acetamido-2-deoxy-beta-D-galactopyranose-(1-4)-[N-acetyl-alpha-neuraminic acid-(2-3)]beta-D-galactopyranose-(1-4)-beta-D-glucopyranose ; × 3 ;alpha-L-fucopyranose-(1-2)-beta-D-galactopyranose-(1-3)-2-acetamido-2-deoxy-beta-D-galactopyranose-(1-4)-[N-acetyl-alpha-neuraminic acid-(2-3)]beta-D-galactopyranose-(1-4)-beta-D-glucopyranose ; × 1 ;alpha-L-fucopyranose-(1-2)-beta-D-galactopyranose-(1-3)-2-acetamido-2-deoxy-beta-D-galactopyranose-(1-4)-[N-acetyl-alpha-neuraminic acid-(2-3)]beta-D-galactopyranose-(1-4)-alpha-D-glucopyranose ; × 1 CALCIUM ION × 5 BICINE × 5 water × 5	与蛋白数一致
2	其他组合	同源多聚体	蛋白 5 其他聚合物 5	;alpha-L-fucopyranose-(1-2)-beta-D-galactopyranose-(1-3)-2-acetamido-2-deoxy-beta-D-galactopyranose-(1-4)-[N-acetyl-alpha-neuraminic acid-(2-3)]beta-D-galactopyranose-(1-4)-beta-D-glucopyranose ; × 3 ;alpha-L-fucopyranose-(1-2)-beta-D-galactopyranose-(1-3)-2-acetamido-2-deoxy-beta-D-galactopyranose-(1-4)-[N-acetyl-alpha-neuraminic acid-(2-3)]beta-D-galactopyranose-(1-4)-beta-D-glucopyranose ; × 1 ;alpha-L-fucopyranose-(1-2)-beta-D-galactopyranose-(1-3)-2-acetamido-2-deoxy-beta-D-galactopyranose-(1-4)-[N-acetyl-alpha-neuraminic acid-(2-3)]beta-D-galactopyranose-(1-4)-alpha-D-glucopyranose ; × 1 CALCIUM ION × 5 BICINE × 5 alpha-L-fucopyranose × 2 water × 5	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	Q57193_VIBCL
Isoform	—
PDB实体	1
链与序列区间	作者链 A； PDB构建体 1–103； UniProt 22–124 作者链 B； PDB构建体 1–103； UniProt 22–124 作者链 C； PDB构建体 1–103； UniProt 22–124 作者链 D； PDB构建体 1–103； UniProt 22–124 作者链 E； PDB构建体 1–103； UniProt 22–124 作者链 F； PDB构建体 1–103； UniProt 22–124 作者链 G； PDB构建体 1–103； UniProt 22–124 作者链 H； PDB构建体 1–103； UniProt 22–124 作者链 I； PDB构建体 1–103； UniProt 22–124 作者链 J； PDB构建体 1–103； UniProt 22–124

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	6hmy
沉积日期 deposition_date	2018-09-13
结构标题 title	Cholera toxin classical B-pentamer in complex with fucosyl-GM1
关键词 keywords	Toxin, cholera toxin, lectin, complex, fucosyl-GM1, protein-carbohydrate interactions, X-ray crystal structure; TOXIN
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。

6hmy__assembly_2__model_1

Assembly 2 · Model 1 · CRYSOL 4.1.3-1-20251215 (887e7ef)

下载该曲线 .dat

6hmy__assembly_2__model_1 | I(q)

100 个绘图点；横轴和纵轴均采用对数尺度。

6hmy__assembly_2__model_1 | P(r) · Pending

P(r) 将按相同 assembly/model 分别计算和展示。

Rg（Guinier）	25.29 Å
Rg（电子密度）	23.99 Å
总 Rg	24.78 Å
原子数	4542
残基数	515
排除体积	81263 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	`6hmy__assembly_1__model_1`	pentameric （5）	成功	4.1.3-1-20251215 (887e7ef)	查看下载
2	1	`6hmy__assembly_2__model_1`	pentameric （5）	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 (8)

实体 1 Entity 1 polymer

描述 description	Cholera enterotoxin B-subunit
分子量 formula_weight	11623.3 kDa
来源方法 src_method	man
拷贝数 entity_count	10

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
原子数 atom_count	10879

TPQNITDLCAEYHNTQIHTLNDKIFSYTESLAGKREMAIITFKNGATFQVEVPGSQHIDSQKKAIERMKDTLRIAYLTEAKVEKLCVWNNKTPHAIAAISMAN

来源 Source

来源生物 organism	Vibrio cholerae
NCBI 分类编号 ncbi_taxonomy_id	666
宿主生物 host_organism	Escherichia coli BL21(DE3)

实体 2 Entity 2 branched

描述 description	;alpha-L-fucopyranose-(1-2)-beta-D-galactopyranose-(1-3)-2-acetamido-2-deoxy-beta-D-galactopyranose-(1-4)-[N-acetyl-alpha-neuraminic acid-(2-3)]beta-D-galactopyranose-(1-4)-beta-D-glucopyranose ;
分子量 formula_weight	1145.0 kDa
来源方法 src_method	man
拷贝数 entity_count	6

实体 3 Entity 3 branched

描述 description	;alpha-L-fucopyranose-(1-2)-beta-D-galactopyranose-(1-3)-2-acetamido-2-deoxy-beta-D-galactopyranose-(1-4)-[N-acetyl-alpha-neuraminic acid-(2-3)]beta-D-galactopyranose-(1-4)-beta-D-glucopyranose ;
分子量 formula_weight	1145.0 kDa
来源方法 src_method	man
拷贝数 entity_count	2

实体 4 Entity 4 branched

描述 description	;alpha-L-fucopyranose-(1-2)-beta-D-galactopyranose-(1-3)-2-acetamido-2-deoxy-beta-D-galactopyranose-(1-4)-[N-acetyl-alpha-neuraminic acid-(2-3)]beta-D-galactopyranose-(1-4)-alpha-D-glucopyranose ;
分子量 formula_weight	1145.0 kDa
来源方法 src_method	man
拷贝数 entity_count	2

实体 5 Entity 5 non-polymer

描述 description	CALCIUM ION
分子量 formula_weight	40.1 kDa
来源方法 src_method	syn
拷贝数 entity_count	10

实体 6 Entity 6 non-polymer

描述 description	BICINE
分子量 formula_weight	163.2 kDa
来源方法 src_method	syn
拷贝数 entity_count	10

实体 7 Entity 7 non-polymer

描述 description	alpha-L-fucopyranose
分子量 formula_weight	164.2 kDa
来源方法 src_method	man
拷贝数 entity_count	2

实体 8 Entity 8 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	797

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6. 折叠分类 (SCOP + CATH) 20 domains

SCOP 2.08 (10 domains)

结构域编号 domain_id	d6hmya_
类 Class class	b — All beta proteins
折叠类型 Fold fold	b.40 — OB-fold
超家族 Superfamily superfamily	b.40.2 — Bacterial enterotoxins
家族 Family family	b.40.2.1 — Bacterial AB5 toxins, B-subunits

结构域编号 domain_id	d6hmyb_
类 Class class	b — All beta proteins
折叠类型 Fold fold	b.40 — OB-fold
超家族 Superfamily superfamily	b.40.2 — Bacterial enterotoxins
家族 Family family	b.40.2.1 — Bacterial AB5 toxins, B-subunits

结构域编号 domain_id	d6hmyc_
类 Class class	b — All beta proteins
折叠类型 Fold fold	b.40 — OB-fold
超家族 Superfamily superfamily	b.40.2 — Bacterial enterotoxins
家族 Family family	b.40.2.1 — Bacterial AB5 toxins, B-subunits

结构域编号 domain_id	d6hmyd_
类 Class class	b — All beta proteins
折叠类型 Fold fold	b.40 — OB-fold
超家族 Superfamily superfamily	b.40.2 — Bacterial enterotoxins
家族 Family family	b.40.2.1 — Bacterial AB5 toxins, B-subunits

结构域编号 domain_id	d6hmye_
类 Class class	b — All beta proteins
折叠类型 Fold fold	b.40 — OB-fold
超家族 Superfamily superfamily	b.40.2 — Bacterial enterotoxins
家族 Family family	b.40.2.1 — Bacterial AB5 toxins, B-subunits

结构域编号 domain_id	d6hmyf_
类 Class class	b — All beta proteins
折叠类型 Fold fold	b.40 — OB-fold
超家族 Superfamily superfamily	b.40.2 — Bacterial enterotoxins
家族 Family family	b.40.2.1 — Bacterial AB5 toxins, B-subunits

结构域编号 domain_id	d6hmyg_
类 Class class	b — All beta proteins
折叠类型 Fold fold	b.40 — OB-fold
超家族 Superfamily superfamily	b.40.2 — Bacterial enterotoxins
家族 Family family	b.40.2.1 — Bacterial AB5 toxins, B-subunits

结构域编号 domain_id	d6hmyh_
类 Class class	b — All beta proteins
折叠类型 Fold fold	b.40 — OB-fold
超家族 Superfamily superfamily	b.40.2 — Bacterial enterotoxins
家族 Family family	b.40.2.1 — Bacterial AB5 toxins, B-subunits

结构域编号 domain_id	d6hmyi_
类 Class class	b — All beta proteins
折叠类型 Fold fold	b.40 — OB-fold
超家族 Superfamily superfamily	b.40.2 — Bacterial enterotoxins
家族 Family family	b.40.2.1 — Bacterial AB5 toxins, B-subunits

结构域编号 domain_id	d6hmyj_
类 Class class	b — All beta proteins
折叠类型 Fold fold	b.40 — OB-fold
超家族 Superfamily superfamily	b.40.2 — Bacterial enterotoxins
家族 Family family	b.40.2.1 — Bacterial AB5 toxins, B-subunits

CATH v4.4 (10 domains)

结构域编号 domain_id	6hmyA00
类 Class class	2 — Mainly Beta
架构 Architecture architecture	40 — Beta Barrel
拓扑 Topology topology	50 — OB fold (Dihydrolipoamide Acetyltransferase, E2P)
同源超家族 H-superfamily homologous superfamily	110 —

结构域编号 domain_id	6hmyB00
类 Class class	2 — Mainly Beta
架构 Architecture architecture	40 — Beta Barrel
拓扑 Topology topology	50 — OB fold (Dihydrolipoamide Acetyltransferase, E2P)
同源超家族 H-superfamily homologous superfamily	110 —

结构域编号 domain_id	6hmyC00
类 Class class	2 — Mainly Beta
架构 Architecture architecture	40 — Beta Barrel
拓扑 Topology topology	50 — OB fold (Dihydrolipoamide Acetyltransferase, E2P)
同源超家族 H-superfamily homologous superfamily	110 —

结构域编号 domain_id	6hmyD00
类 Class class	2 — Mainly Beta
架构 Architecture architecture	40 — Beta Barrel
拓扑 Topology topology	50 — OB fold (Dihydrolipoamide Acetyltransferase, E2P)
同源超家族 H-superfamily homologous superfamily	110 —

结构域编号 domain_id	6hmyE00
类 Class class	2 — Mainly Beta
架构 Architecture architecture	40 — Beta Barrel
拓扑 Topology topology	50 — OB fold (Dihydrolipoamide Acetyltransferase, E2P)
同源超家族 H-superfamily homologous superfamily	110 —

结构域编号 domain_id	6hmyF00
类 Class class	2 — Mainly Beta
架构 Architecture architecture	40 — Beta Barrel
拓扑 Topology topology	50 — OB fold (Dihydrolipoamide Acetyltransferase, E2P)
同源超家族 H-superfamily homologous superfamily	110 —

结构域编号 domain_id	6hmyG00
类 Class class	2 — Mainly Beta
架构 Architecture architecture	40 — Beta Barrel
拓扑 Topology topology	50 — OB fold (Dihydrolipoamide Acetyltransferase, E2P)
同源超家族 H-superfamily homologous superfamily	110 —

结构域编号 domain_id	6hmyH00
类 Class class	2 — Mainly Beta
架构 Architecture architecture	40 — Beta Barrel
拓扑 Topology topology	50 — OB fold (Dihydrolipoamide Acetyltransferase, E2P)
同源超家族 H-superfamily homologous superfamily	110 —

结构域编号 domain_id	6hmyI00
类 Class class	2 — Mainly Beta
架构 Architecture architecture	40 — Beta Barrel
拓扑 Topology topology	50 — OB fold (Dihydrolipoamide Acetyltransferase, E2P)
同源超家族 H-superfamily homologous superfamily	110 —

结构域编号 domain_id	6hmyJ00
类 Class class	2 — Mainly Beta
架构 Architecture architecture	40 — Beta Barrel
拓扑 Topology topology	50 — OB fold (Dihydrolipoamide Acetyltransferase, E2P)
同源超家族 H-superfamily homologous superfamily	110 —

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晶胞边长 a length_a	148.626 Å
晶胞边长 b length_b	74.137 Å
晶胞边长 c length_c	111.245 Å
晶胞夹角 α angle_alpha	90.00 °
晶胞夹角 β angle_beta	105.59 °
晶胞夹角 γ angle_gamma	90.00 °
晶胞分子数 Z z_pdb	40

空间群 space_group	C 1 2 1
空间群编号 int_tables_number	5
晶系 crystal_system	—

分辨率 resolution	1.600 Å
最低分辨率 resolution_low	44.320 Å
R 因子 r_factor	0.1852
R_work r_work	0.1836
R_free r_free	0.2141

Cholera toxin classical B-pentamer in complex with fucosyl-GM1

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

Cholera enterotoxin B-subunit

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

6hmy__assembly_2__model_1

6hmy__assembly_2__model_1 | I(q)

6hmy__assembly_2__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 (8)

实体 1 Entity 1 polymer

聚合物 Polymer

来源 Source

实体 2 Entity 2 branched

实体 3 Entity 3 branched

实体 4 Entity 4 branched

实体 5 Entity 5 non-polymer

实体 6 Entity 6 non-polymer

实体 7 Entity 7 non-polymer

实体 8 Entity 8 water

6. 折叠分类 (SCOP + CATH) 20 domains

SCOP 2.08 (10 domains)

CATH v4.4 (10 domains)

7. 引用文献 (1)

Cholera toxin classical B-pentamer in complex with fucosyl-GM1

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

Cholera enterotoxin B-subunit

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

6hmy__assembly_2__model_1

6hmy__assembly_2__model_1 | I(q)

6hmy__assembly_2__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 (8)

实体 1 Entity 1 polymer

聚合物 Polymer

来源 Source

实体 2 Entity 2 branched

实体 3 Entity 3 branched

实体 4 Entity 4 branched

实体 5 Entity 5 non-polymer

实体 6 Entity 6 non-polymer

实体 7 Entity 7 non-polymer

实体 8 Entity 8 water

6. 折叠分类 (SCOP + CATH) 20 domains

SCOP 2.08 (10 domains)

CATH v4.4 (10 domains)

7. 引用文献 (1)