3kqg

Trimeric Structure of Langerin

Method: X-RAY DIFFRACTION

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

C-type lectin domain family 4 member K

Homo sapiens

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 3	CALCIUM ION × 3 water × 3	与蛋白数一致
2	蛋白同源多聚体	同源多聚体	蛋白 3	CALCIUM ION × 3 water × 3	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	CLC4K_HUMAN
Isoform	—
PDB实体	1
链与序列区间	作者链 A； PDB构建体 1–182； UniProt 147–328 作者链 B； PDB构建体 1–182； UniProt 147–328 作者链 C； PDB构建体 1–182； UniProt 147–328 作者链 D； PDB构建体 1–182； UniProt 147–328 作者链 E； PDB构建体 1–182； UniProt 147–328 作者链 F； PDB构建体 1–182； UniProt 147–328

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	3kqg
沉积日期 deposition_date	2009-11-17
结构标题 title	Trimeric Structure of Langerin
关键词 keywords	trimer, neck and CRD, Coiled coil, Lectin, IMMUNE SYSTEM; IMMUNE SYSTEM
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。

3kqg__assembly_2__model_1

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

下载该曲线 .dat

3kqg__assembly_2__model_1 | I(q)

100 个绘图点；横轴和纵轴均采用对数尺度。

3kqg__assembly_2__model_1 | P(r) · Pending

P(r) 将按相同 assembly/model 分别计算和展示。

Rg（Guinier）	26.47 Å
Rg（电子密度）	25.30 Å
总 Rg	26.27 Å
原子数	3880
残基数	480
排除体积	68980 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	`3kqg__assembly_1__model_1`	trimeric （3）	成功	4.1.3-1-20251215 (887e7ef)	查看下载
2	1	`3kqg__assembly_2__model_1`	trimeric （3）	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 (3)

实体 1 Entity 1 polymer

描述 description	C-type lectin domain family 4 member K
分子量 formula_weight	20632.2 kDa
突变 mutation	V147A,V278A
来源方法 src_method	man
拷贝数 entity_count	6

聚合物 Polymer

聚合物类型 type	polypeptide(L)
链编号 strand_id	A,B,C,D,E,F
原子数 atom_count	8237

ASTLNAQIPELKSDLEKASALNTKIRALQGSLENMSKLLKRQNDILQVVSQGWKYFKGNFYYFSLIPKTWYSAEQFCVSRNSHLTSVTSESEQEFLYKTAGGLIYWIGLTKAGMEGDWSWVDDTPFNKVQSARFWIPGEPNNAGNNEHCGNIKAPSLQAWNDAPCDKTFLFICKRPYVPSEP

来源 Source

来源生物 organism	Homo sapiens
通用名 common_name	human
NCBI 分类编号 ncbi_taxonomy_id	9606
宿主生物 host_organism	Escherichia coli

实体 2 Entity 2 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	6

实体 3 Entity 3 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	407

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6. 折叠分类 (SCOP + CATH) 24 domains

SCOP 2.08 (12 domains)

结构域编号 domain_id	d3kqga1
类 Class class	d — Alpha and beta proteins (a+b)
折叠类型 Fold fold	d.169 — C-type lectin-like
超家族 Superfamily superfamily	d.169.1 — C-type lectin-like
家族 Family family	d.169.1.0 — automated matches

结构域编号 domain_id	d3kqga2
类 Class class	h — Coiled coil proteins
折叠类型 Fold fold	h.1 — Parallel coiled-coil
超家族 Superfamily superfamily	h.1.1 — Triple coiled coil domain of C-type lectins
家族 Family family	h.1.1.1 — Triple coiled coil domain of C-type lectins

结构域编号 domain_id	d3kqgb1
类 Class class	d — Alpha and beta proteins (a+b)
折叠类型 Fold fold	d.169 — C-type lectin-like
超家族 Superfamily superfamily	d.169.1 — C-type lectin-like
家族 Family family	d.169.1.0 — automated matches

结构域编号 domain_id	d3kqgb2
类 Class class	h — Coiled coil proteins
折叠类型 Fold fold	h.1 — Parallel coiled-coil
超家族 Superfamily superfamily	h.1.1 — Triple coiled coil domain of C-type lectins
家族 Family family	h.1.1.1 — Triple coiled coil domain of C-type lectins

结构域编号 domain_id	d3kqgc1
类 Class class	d — Alpha and beta proteins (a+b)
折叠类型 Fold fold	d.169 — C-type lectin-like
超家族 Superfamily superfamily	d.169.1 — C-type lectin-like
家族 Family family	d.169.1.0 — automated matches

结构域编号 domain_id	d3kqgc2
类 Class class	h — Coiled coil proteins
折叠类型 Fold fold	h.1 — Parallel coiled-coil
超家族 Superfamily superfamily	h.1.1 — Triple coiled coil domain of C-type lectins
家族 Family family	h.1.1.1 — Triple coiled coil domain of C-type lectins

结构域编号 domain_id	d3kqgd1
类 Class class	d — Alpha and beta proteins (a+b)
折叠类型 Fold fold	d.169 — C-type lectin-like
超家族 Superfamily superfamily	d.169.1 — C-type lectin-like
家族 Family family	d.169.1.0 — automated matches

结构域编号 domain_id	d3kqgd2
类 Class class	h — Coiled coil proteins
折叠类型 Fold fold	h.1 — Parallel coiled-coil
超家族 Superfamily superfamily	h.1.1 — Triple coiled coil domain of C-type lectins
家族 Family family	h.1.1.1 — Triple coiled coil domain of C-type lectins

结构域编号 domain_id	d3kqge1
类 Class class	d — Alpha and beta proteins (a+b)
折叠类型 Fold fold	d.169 — C-type lectin-like
超家族 Superfamily superfamily	d.169.1 — C-type lectin-like
家族 Family family	d.169.1.0 — automated matches

结构域编号 domain_id	d3kqge2
类 Class class	h — Coiled coil proteins
折叠类型 Fold fold	h.1 — Parallel coiled-coil
超家族 Superfamily superfamily	h.1.1 — Triple coiled coil domain of C-type lectins
家族 Family family	h.1.1.1 — Triple coiled coil domain of C-type lectins

结构域编号 domain_id	d3kqgf1
类 Class class	d — Alpha and beta proteins (a+b)
折叠类型 Fold fold	d.169 — C-type lectin-like
超家族 Superfamily superfamily	d.169.1 — C-type lectin-like
家族 Family family	d.169.1.0 — automated matches

结构域编号 domain_id	d3kqgf2
类 Class class	h — Coiled coil proteins
折叠类型 Fold fold	h.1 — Parallel coiled-coil
超家族 Superfamily superfamily	h.1.1 — Triple coiled coil domain of C-type lectins
家族 Family family	h.1.1.1 — Triple coiled coil domain of C-type lectins

CATH v4.4 (12 domains)

结构域编号 domain_id	3kqgA01
类 Class class	1 — Mainly Alpha
架构 Architecture architecture	20 — Up-down Bundle
拓扑 Topology topology	5 — Single alpha-helices involved in coiled-coils or other helix-helix interfaces
同源超家族 H-superfamily homologous superfamily	170 —

结构域编号 domain_id	3kqgA02
类 Class class	3 — Alpha Beta
架构 Architecture architecture	10 — Roll
拓扑 Topology topology	100 — Mannose-Binding Protein A; Chain A
同源超家族 H-superfamily homologous superfamily	10 — Mannose-Binding Protein A, subunit A

结构域编号 domain_id	3kqgB01
类 Class class	1 — Mainly Alpha
架构 Architecture architecture	20 — Up-down Bundle
拓扑 Topology topology	5 — Single alpha-helices involved in coiled-coils or other helix-helix interfaces
同源超家族 H-superfamily homologous superfamily	170 —

结构域编号 domain_id	3kqgB02
类 Class class	3 — Alpha Beta
架构 Architecture architecture	10 — Roll
拓扑 Topology topology	100 — Mannose-Binding Protein A; Chain A
同源超家族 H-superfamily homologous superfamily	10 — Mannose-Binding Protein A, subunit A

结构域编号 domain_id	3kqgC01
类 Class class	1 — Mainly Alpha
架构 Architecture architecture	20 — Up-down Bundle
拓扑 Topology topology	5 — Single alpha-helices involved in coiled-coils or other helix-helix interfaces
同源超家族 H-superfamily homologous superfamily	170 —

结构域编号 domain_id	3kqgC02
类 Class class	3 — Alpha Beta
架构 Architecture architecture	10 — Roll
拓扑 Topology topology	100 — Mannose-Binding Protein A; Chain A
同源超家族 H-superfamily homologous superfamily	10 — Mannose-Binding Protein A, subunit A

结构域编号 domain_id	3kqgD01
类 Class class	1 — Mainly Alpha
架构 Architecture architecture	20 — Up-down Bundle
拓扑 Topology topology	5 — Single alpha-helices involved in coiled-coils or other helix-helix interfaces
同源超家族 H-superfamily homologous superfamily	170 —

结构域编号 domain_id	3kqgD02
类 Class class	3 — Alpha Beta
架构 Architecture architecture	10 — Roll
拓扑 Topology topology	100 — Mannose-Binding Protein A; Chain A
同源超家族 H-superfamily homologous superfamily	10 — Mannose-Binding Protein A, subunit A

结构域编号 domain_id	3kqgE01
类 Class class	1 — Mainly Alpha
架构 Architecture architecture	20 — Up-down Bundle
拓扑 Topology topology	5 — Single alpha-helices involved in coiled-coils or other helix-helix interfaces
同源超家族 H-superfamily homologous superfamily	170 —

结构域编号 domain_id	3kqgE02
类 Class class	3 — Alpha Beta
架构 Architecture architecture	10 — Roll
拓扑 Topology topology	100 — Mannose-Binding Protein A; Chain A
同源超家族 H-superfamily homologous superfamily	10 — Mannose-Binding Protein A, subunit A

结构域编号 domain_id	3kqgF01
类 Class class	1 — Mainly Alpha
架构 Architecture architecture	20 — Up-down Bundle
拓扑 Topology topology	5 — Single alpha-helices involved in coiled-coils or other helix-helix interfaces
同源超家族 H-superfamily homologous superfamily	170 —

结构域编号 domain_id	3kqgF02
类 Class class	3 — Alpha Beta
架构 Architecture architecture	10 — Roll
拓扑 Topology topology	100 — Mannose-Binding Protein A; Chain A
同源超家族 H-superfamily homologous superfamily	10 — Mannose-Binding Protein A, subunit A

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晶胞边长 a length_a	80.780 Å
晶胞边长 b length_b	77.460 Å
晶胞边长 c length_c	85.920 Å
晶胞夹角 α angle_alpha	90.00 °
晶胞夹角 β angle_beta	94.42 °
晶胞夹角 γ angle_gamma	90.00 °
晶胞分子数 Z z_pdb	12

空间群 space_group	P 1 21 1
空间群编号 int_tables_number	4
晶系 crystal_system	—

分辨率 resolution	2.300 Å
最低分辨率 resolution_low	47.958 Å
R 因子 r_factor	0.1849
R_work r_work	0.1821
R_free r_free	0.2385

Trimeric Structure of Langerin

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

C-type lectin domain family 4 member K

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

3kqg__assembly_2__model_1

3kqg__assembly_2__model_1 | I(q)

3kqg__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 (3)

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 water

6. 折叠分类 (SCOP + CATH) 24 domains

SCOP 2.08 (12 domains)

CATH v4.4 (12 domains)

7. 引用文献 (1)

Trimeric Structure of Langerin

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

C-type lectin domain family 4 member K

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

3kqg__assembly_2__model_1

3kqg__assembly_2__model_1 | I(q)

3kqg__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 (3)

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 water

6. 折叠分类 (SCOP + CATH) 24 domains

SCOP 2.08 (12 domains)

CATH v4.4 (12 domains)

7. 引用文献 (1)