25ih

Cryo-EM structure of human Nav1.6 in complex with Cn2

Method: ELECTRON MICROSCOPY

▼

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

Sodium channel protein type 8 subunit alpha

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	其他组合	异源复合物	蛋白 3 其他聚合物 3	Sodium channel regulatory subunit beta-1 × 1 （Q07699） Beta-mammal toxin Cn2 × 1 （P01495） ;alpha-D-mannopyranose-(1-2)-alpha-D-mannopyranose-(1-6)-[alpha-D-mannopyranose-(1-3)]alpha-D-mannopyranose-(1-6)-[alpha-D-mannopyranose-(1-2)-alpha-D-mannopyranose-(1-3)]beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-3)-2-acetamido-2-deoxy-beta-D-glucopyranose ; × 1 2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose × 1 ;alpha-D-mannopyranose-(1-2)-alpha-D-mannopyranose-(1-6)-[alpha-D-mannopyranose-(1-2)]alpha-D-mannopyranose-(1-6)-[alpha-D-mannopyranose-(1-2)-alpha-D-mannopyranose-(1-3)]beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-3)-2-acetamido-2-deoxy-beta-D-glucopyranose ; × 1 2-acetamido-2-deoxy-beta-D-glucopyranose × 6 (3beta,14beta,17beta,25R)-3-[4-methoxy-3-(methoxymethyl)butoxy]spirost-5-en × 1 1,2-DIOLEOYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 5 CHOLESTEROL HEMISUCCINATE × 3 CHOLESTEROL × 1 O-[(R)-{[(2R)-2,3-bis(octadecanoyloxy)propyl]oxy}(hydroxy)phosphoryl]-L-serine × 1 1-O-OCTADECYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 1 (5E,17R,20S)-23-amino-20-hydroxy-14,20-dioxo-15,19,21-trioxa-20lambda~5~-phosphatricos-5-en-17-yl hexadecanoate × 1 ;[(2R)-1-octadecanoyloxy-3-[oxidanyl-[(1R,2R,3S,4R,5R,6S)-2,3,6-tris(oxidanyl)-4,5-diphosphonooxy-cyclohexyl]oxy-phospho ryl]oxy-propan-2-yl] (8Z)-icosa-5,8,11,14-tetraenoate ; × 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	SCN8A_HUMAN
Isoform	—
PDB实体	1
链与序列区间	作者链 A； PDB构建体 1–1980； UniProt 1–1980

Sodium channel regulatory subunit beta-1

Homo sapiens

UniProt Q07699

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	异源复合物	蛋白 3 其他聚合物 3	Sodium channel protein type 8 subunit alpha × 1 （Q9UQD0） Beta-mammal toxin Cn2 × 1 （P01495） ;alpha-D-mannopyranose-(1-2)-alpha-D-mannopyranose-(1-6)-[alpha-D-mannopyranose-(1-3)]alpha-D-mannopyranose-(1-6)-[alpha-D-mannopyranose-(1-2)-alpha-D-mannopyranose-(1-3)]beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-3)-2-acetamido-2-deoxy-beta-D-glucopyranose ; × 1 2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose × 1 ;alpha-D-mannopyranose-(1-2)-alpha-D-mannopyranose-(1-6)-[alpha-D-mannopyranose-(1-2)]alpha-D-mannopyranose-(1-6)-[alpha-D-mannopyranose-(1-2)-alpha-D-mannopyranose-(1-3)]beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-3)-2-acetamido-2-deoxy-beta-D-glucopyranose ; × 1 2-acetamido-2-deoxy-beta-D-glucopyranose × 6 (3beta,14beta,17beta,25R)-3-[4-methoxy-3-(methoxymethyl)butoxy]spirost-5-en × 1 1,2-DIOLEOYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 5 CHOLESTEROL HEMISUCCINATE × 3 CHOLESTEROL × 1 O-[(R)-{[(2R)-2,3-bis(octadecanoyloxy)propyl]oxy}(hydroxy)phosphoryl]-L-serine × 1 1-O-OCTADECYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 1 (5E,17R,20S)-23-amino-20-hydroxy-14,20-dioxo-15,19,21-trioxa-20lambda~5~-phosphatricos-5-en-17-yl hexadecanoate × 1 ;[(2R)-1-octadecanoyloxy-3-[oxidanyl-[(1R,2R,3S,4R,5R,6S)-2,3,6-tris(oxidanyl)-4,5-diphosphonooxy-cyclohexyl]oxy-phospho ryl]oxy-propan-2-yl] (8Z)-icosa-5,8,11,14-tetraenoate ; × 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	SCN1B_HUMAN
Isoform	—
PDB实体	2
链与序列区间	作者链 C； PDB构建体 1–218； UniProt 1–218

Beta-mammal toxin Cn2

Centruroides noxius

UniProt P01495

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	异源复合物	蛋白 3 其他聚合物 3	Sodium channel protein type 8 subunit alpha × 1 （Q9UQD0） Sodium channel regulatory subunit beta-1 × 1 （Q07699） ;alpha-D-mannopyranose-(1-2)-alpha-D-mannopyranose-(1-6)-[alpha-D-mannopyranose-(1-3)]alpha-D-mannopyranose-(1-6)-[alpha-D-mannopyranose-(1-2)-alpha-D-mannopyranose-(1-3)]beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-3)-2-acetamido-2-deoxy-beta-D-glucopyranose ; × 1 2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose × 1 ;alpha-D-mannopyranose-(1-2)-alpha-D-mannopyranose-(1-6)-[alpha-D-mannopyranose-(1-2)]alpha-D-mannopyranose-(1-6)-[alpha-D-mannopyranose-(1-2)-alpha-D-mannopyranose-(1-3)]beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-3)-2-acetamido-2-deoxy-beta-D-glucopyranose ; × 1 2-acetamido-2-deoxy-beta-D-glucopyranose × 6 (3beta,14beta,17beta,25R)-3-[4-methoxy-3-(methoxymethyl)butoxy]spirost-5-en × 1 1,2-DIOLEOYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 5 CHOLESTEROL HEMISUCCINATE × 3 CHOLESTEROL × 1 O-[(R)-{[(2R)-2,3-bis(octadecanoyloxy)propyl]oxy}(hydroxy)phosphoryl]-L-serine × 1 1-O-OCTADECYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 1 (5E,17R,20S)-23-amino-20-hydroxy-14,20-dioxo-15,19,21-trioxa-20lambda~5~-phosphatricos-5-en-17-yl hexadecanoate × 1 ;[(2R)-1-octadecanoyloxy-3-[oxidanyl-[(1R,2R,3S,4R,5R,6S)-2,3,6-tris(oxidanyl)-4,5-diphosphonooxy-cyclohexyl]oxy-phospho ryl]oxy-propan-2-yl] (8Z)-icosa-5,8,11,14-tetraenoate ; × 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	SCX2_CENNO
Isoform	—
PDB实体	3
链与序列区间	作者链 D； PDB构建体 1–66； UniProt 17–82

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	25ih
沉积日期 deposition_date	2026-04-06
结构标题 title	Cryo-EM structure of human Nav1.6 in complex with Cn2
关键词 keywords	Nav1.6, voltage gated sodium channel, cryo-EM, toxin, Cn2, TRANSPORT PROTEIN-TOXIN complex, MEMBRANE PROTEIN; MEMBRANE PROTEIN
实验方法 method	ELECTRON MICROSCOPY

▼

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。

25ih__assembly_1__model_1

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

下载该曲线 .dat

25ih__assembly_1__model_1 | I(q)

100 个绘图点；横轴和纵轴均采用对数尺度。

25ih__assembly_1__model_1 | P(r) · Pending

P(r) 将按相同 assembly/model 分别计算和展示。

Rg（Guinier）	41.27 Å
Rg（电子密度）	40.48 Å
总 Rg	40.70 Å
原子数	12733
残基数	1467
排除体积	233840 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	`25ih__assembly_1__model_1`	trimeric （3）	成功	4.1.3-1-20251215 (887e7ef)	查看下载

▶

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

▶

5. 实体与聚合物信息 Entities & Polymers (16)

实体 1 Entity 1 polymer

描述 description	Sodium channel protein type 8 subunit alpha
分子量 formula_weight	225520.6 kDa
来源方法 src_method	man
拷贝数 entity_count	1

聚合物 Polymer

聚合物类型 type	polypeptide(L)
链编号 strand_id	A
原子数 atom_count	12745

MAARLLAPPGPDSFKPFTPESLANIERRIAESKLKKPPKADGSHREDDEDSKPKPNSDLEAGKSLPFIYGDIPQGLVAVPLEDFDPYYLTQKTFVVLNRGKTLFRFSATPALYILSPFNLIRRIAIKILIHSVFSMIIMCTILTNCVFMTFSNPPDWSKNVEYTFTGIYTFESLVKIIARGFCIDGFTFLRDPWNWLDFSVIMMAYITEFVNLGNVSALRTFRVLRALKTISVIPGLKTIVGALIQSVKKLSDVMILTVFCLSVFALIGLQLFMGNLRNKCVVWPINFNESYLENGTKGFDWEEYINNKTNFYTVPGMLEPLLCGNSSDAGQCPEGYQCMKAGRNPNYGYTSFDTFSWAFLALFRLMTQDYWENLYQLTLRAAGKTYMIFFVLVIFVGSFYLVNLILAVVAMAYEEQNQATLEEAEQKEAEFKAMLEQLKKQQEEAQAAAMATSAGTVSEDAIEEEGEEGGGSPRSSSEISKLSSKSAKERRNRRKKRKQKELSEGEEKGDPEKVFKSESEDGMRRKAFRLPDNRIGRKFSIMNQSLLSIPGSPFLSRHNSKSSIFSFRGPGRFRDPGSENEFADDEHSTVEESEGRRDSLFIPIRARERRSSYSGYSGYSQGSRSSRIFPSLRRSVKRNSTVDCNGVVSLIGGPGSHIGGRLLPEATTEVEIKKKGPGSLLVSMDQLASYGRKDRINSIMSVVTNTLVEELEESQRKCPPCWYKFANTFLIWECHPYWIKLKEIVNLIVMDPFVDLAITICIVLNTLFMAMEHHPMTPQFEHVLAVGNLVFTGIFTAEMFLKLIAMDPYYYFQEGWNIFDGFIVSLSLMELSLADVEGLSVLRSFRLLRVFKLAKSWPTLNMLIKIIGNSVGALGNLTLVLAIIVFIFAVVGMQLFGKSYKECVCKINQDCELPRWHMHDFFHSFLIVFRVLCGEWIETMWDCMEVAGQAMCLIVFMMVMVIGNLVVLNLFLALLLSSFSADNLAATDDDGEMNNLQISVIRIKKGVAWTKLKVHAFMQAHFKQREADEVKPLDELYEKKANCIANHTGADIHRNGDFQKNGNGTTSGIGSSVEKYIIDEDHMSFINNPNLTVRVPIAVGESDFENLNTEDVSSESDPEGSKDKLDDTSSSEGSTIDIKPEVEEVPVEQPEEYLDPDACFTEGCVQRFKCCQVNIEEGLGKSWWILRKTCFLIVEHNWFETFIIFMILLSSGALAFEDIYIEQRKTIRTILEYADKVFTYIFILEMLLKWTAYGFVKFFTNAWCWLDFLIVAVSLVSLIANALGYSELGAIKSLRTLRALRPLRALSRFEGMRVVVNALVGAIPSIMNVLLVCLIFWLIFSIMGVNLFAGKYHYCFNETSEIRFEIEDVNNKTECEKLMEGNNTEIRWKNVKINFDNVGAGYLALLQVATFKGWMDIMYAAVDSRKPDEQPKYEDNIYMYIYFVIFIIFGSFFTLNLFIGVIIDNFNQQKKKFGGQDIFMTEEQKKYYNAMKKLGSKKPQKPIPRPLNKIQGIVFDFVTQQAFDIVIMMLICLNMVTMMVETDTQSKQMENILYWINLVFVIFFTCECVLKMFALRHYYFTIGWNIFDFVVVILSIVGMFLADIIEKYFVSPTLFRVIRLARIGRILRLIKGAKGIRTLLFALMMSLPALFNIGLLLFLVMFIFSIFGMSNFAYVKHEAGIDDMFNFETFGNSMICLFQITTSAGWDGLLLPILNRPPDCSLDKEHPGSGFKGDCGNPSVGIFFFVSYIIISFLIVVNMYIAIILENFSVATEESADPLSEDDFETFYEIWEKFDPDATQFIEYCKLADFADALEHPLRVPKPNTIELIAMDLPMVSGDRIHCLDILFAFTKRVLGDSGELDILRQQMEERFVASNPSKVSYEPITTTLRRKQEEVSAVVLQRAYRGHLARRGFICKKTTSNKLENGGTHREKKESTPSTASLPSYDSVTKPEKEKQQRAEEGRRERAKRQKEVRESKC

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	Homo sapiens

实体 2 Entity 2 polymer

描述 description	Sodium channel regulatory subunit beta-1
分子量 formula_weight	24732.1 kDa
来源方法 src_method	man
拷贝数 entity_count	1

聚合物 Polymer

聚合物类型 type	polypeptide(L)
链编号 strand_id	C

MGRLLALVVGAALVSSACGGCVEVDSETEAVYGMTFKILCISCKRRSETNAETFTEWTFRQKGTEEFVKILRYENEVLQLEEDERFEGRVVWNGSRGTKDLQDLSIFITNVTYNHSGDYECHVYRLLFFENYEHNTSVVKKIHIEVVDKANRDMASIVSEIMMYVLIVVLTIWLVAEMIYCYKKIAAATETAAQENASEYLAITSESKENCTGVQVAE

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	Homo sapiens

实体 3 Entity 3 polymer

描述 description	Beta-mammal toxin Cn2
分子量 formula_weight	7605.7 kDa
来源方法 src_method	man
拷贝数 entity_count	1

聚合物 Polymer

聚合物类型 type	polypeptide(L)
链编号 strand_id	D

KEGYLVDKNTGCKYECLKLGDNDYCLRECKQQYGKGAGGYCYAFACWCTHLYEQAIVWPLPNKRCSX

来源 Source

来源生物 organism	Centruroides noxius
通用名 common_name	Mexican scorpion
NCBI 分类编号 ncbi_taxonomy_id	6878
宿主生物 host_organism	Centruroides noxius

实体 4 Entity 4 branched

描述 description	;alpha-D-mannopyranose-(1-2)-alpha-D-mannopyranose-(1-6)-[alpha-D-mannopyranose-(1-3)]alpha-D-mannopyranose-(1-6)-[alpha-D-mannopyranose-(1-2)-alpha-D-mannopyranose-(1-3)]beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-3)-2-acetamido-2-deoxy-beta-D-glucopyranose ;
分子量 formula_weight	1559.4 kDa
来源方法 src_method	man
拷贝数 entity_count	1

实体 5 Entity 5 branched

描述 description	2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose
分子量 formula_weight	424.4 kDa
来源方法 src_method	man
拷贝数 entity_count	1

实体 6 Entity 6 branched

描述 description	;alpha-D-mannopyranose-(1-2)-alpha-D-mannopyranose-(1-6)-[alpha-D-mannopyranose-(1-2)]alpha-D-mannopyranose-(1-6)-[alpha-D-mannopyranose-(1-2)-alpha-D-mannopyranose-(1-3)]beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-3)-2-acetamido-2-deoxy-beta-D-glucopyranose ;
分子量 formula_weight	1559.4 kDa
来源方法 src_method	man
拷贝数 entity_count	1

实体 7 Entity 7 non-polymer

描述 description	2-acetamido-2-deoxy-beta-D-glucopyranose
分子量 formula_weight	221.2 kDa
来源方法 src_method	syn
拷贝数 entity_count	6

实体 8 Entity 8 non-polymer

描述 description	(3beta,14beta,17beta,25R)-3-[4-methoxy-3-(methoxymethyl)butoxy]spirost-5-en
分子量 formula_weight	544.8 kDa
来源方法 src_method	syn
拷贝数 entity_count	1

实体 9 Entity 9 non-polymer

描述 description	1,2-DIOLEOYL-SN-GLYCERO-3-PHOSPHOCHOLINE
分子量 formula_weight	787.1 kDa
来源方法 src_method	syn
拷贝数 entity_count	5

实体 10 Entity 10 non-polymer

描述 description	CHOLESTEROL HEMISUCCINATE
分子量 formula_weight	486.7 kDa
来源方法 src_method	syn
拷贝数 entity_count	3

实体 11 Entity 11 non-polymer

描述 description	CHOLESTEROL
分子量 formula_weight	386.7 kDa
来源方法 src_method	syn
拷贝数 entity_count	1

实体 12 Entity 12 non-polymer

描述 description	O-[(R)-{[(2R)-2,3-bis(octadecanoyloxy)propyl]oxy}(hydroxy)phosphoryl]-L-serine
分子量 formula_weight	792.1 kDa
来源方法 src_method	syn
拷贝数 entity_count	1

实体 13 Entity 13 non-polymer

描述 description	1-O-OCTADECYL-SN-GLYCERO-3-PHOSPHOCHOLINE
分子量 formula_weight	510.7 kDa
来源方法 src_method	syn
拷贝数 entity_count	1

实体 14 Entity 14 non-polymer

描述 description	(5E,17R,20S)-23-amino-20-hydroxy-14,20-dioxo-15,19,21-trioxa-20lambda~5~-phosphatricos-5-en-17-yl hexadecanoate
分子量 formula_weight	661.9 kDa
来源方法 src_method	syn
拷贝数 entity_count	1

实体 15 Entity 15 non-polymer

描述 description	;[(2R)-1-octadecanoyloxy-3-[oxidanyl-[(1R,2R,3S,4R,5R,6S)-2,3,6-tris(oxidanyl)-4,5-diphosphonooxy-cyclohexyl]oxy-phospho ryl]oxy-propan-2-yl] (8Z)-icosa-5,8,11,14-tetraenoate ;
分子量 formula_weight	1047.1 kDa
来源方法 src_method	syn
拷贝数 entity_count	1

实体 16 Entity 16 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	12

▶

晶胞边长 a length_a	1.000 Å
晶胞边长 b length_b	1.000 Å
晶胞边长 c length_c	1.000 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	—

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

分辨率 resolution	2.800 Å
最低分辨率 resolution_low	— Å
R 因子 r_factor	—
R_work r_work	—
R_free r_free	—

分辨率 resolution	2.80 Å
分辨率测定方法 resolution_method	—
颗粒数 num_particles	203018

Cryo-EM structure of human Nav1.6 in complex with Cn2

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

Sodium channel protein type 8 subunit alpha

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

Sodium channel regulatory subunit beta-1

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

Beta-mammal toxin Cn2

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

25ih__assembly_1__model_1

25ih__assembly_1__model_1 | I(q)

25ih__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

冷冻电镜 EM 3D

5. 实体与聚合物信息 Entities & Polymers (16)

实体 1 Entity 1 polymer

聚合物 Polymer

来源 Source

实体 2 Entity 2 polymer

聚合物 Polymer

来源 Source

实体 3 Entity 3 polymer

聚合物 Polymer

来源 Source

实体 4 Entity 4 branched

实体 5 Entity 5 branched

实体 6 Entity 6 branched

实体 7 Entity 7 non-polymer

实体 8 Entity 8 non-polymer

实体 9 Entity 9 non-polymer

实体 10 Entity 10 non-polymer

实体 11 Entity 11 non-polymer

实体 12 Entity 12 non-polymer

实体 13 Entity 13 non-polymer

实体 14 Entity 14 non-polymer

实体 15 Entity 15 non-polymer

实体 16 Entity 16 water

7. 引用文献 (1)