SAXSdb — 3wfn

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1. Protein Identity and Related Structures Protein Identity & Related Structures

Calmodulin, Sodium channel protein type 8 subunit alpha

Mus musculus

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Insufficient information	Monomer	Protein 1	water × 1	Consistent with protein count
2	Insufficient information	Monomer	Protein 1	water × 1	Consistent with protein count
3	Insufficient information	Monomer	Protein 1	water × 1	Consistent with protein count
4	Insufficient information	Monomer	Protein 1	water × 1	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	CALM_MOUSE
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain B； PDBConstruct 7–155； UniProt 1–149 Author chain C； PDBConstruct 7–155； UniProt 1–149 Author chain D； PDBConstruct 7–155； UniProt 1–149 Author chain E； PDBConstruct 7–155； UniProt 1–149

Calmodulin, Sodium channel protein type 8 subunit alpha

Mus musculus

UniProt Q9WTU3

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Insufficient information	Monomer	Protein 1	water × 1	Consistent with protein count
2	Insufficient information	Monomer	Protein 1	water × 1	Consistent with protein count
3	Insufficient information	Monomer	Protein 1	water × 1	Consistent with protein count
4	Insufficient information	Monomer	Protein 1	water × 1	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	SCN8A_MOUSE
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain B； PDBConstruct 161–182； UniProt 1893–1914 Author chain C； PDBConstruct 161–182； UniProt 1893–1914 Author chain D； PDBConstruct 161–182； UniProt 1893–1914 Author chain E； PDBConstruct 161–182； UniProt 1893–1914

The page prioritizes protein identity, the current assembly, associated components, oligomeric state and cross-PDB links. Chain mapping and sequence ranges are retained as data evidence. Internal IDs, import timestamps and assembly operation expressions are maintenance fields and are not shown here.

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2. Structure Basics 2. Structure Basics

Entry ID entry_id	3wfn
Deposition date deposition_date	2013-07-23
Structure title title	Crystal Structure of Nav1.6 IQ motif in complex with apo-CaM
Keywords keywords	EF-hand motif, Calcium binding protein, IQ motif, METAL BINDING PROTEIN; METAL BINDING PROTEIN
Experimental Method method	X-RAY DIFFRACTION

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3. Official assembly/model SAXS Official SAXS Profiles

This page reads only the latest assembly calculations. Every curve maps to an explicit PDB entry, official biological assembly and coordinate model.

3wfn__assembly_4__model_1

Assembly 4 · Model 1 · CRYSOL 4.1.3-1-20251215 (887e7ef)

Download this curve (.dat)

3wfn__assembly_4__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

3wfn__assembly_4__model_1 | P(r) · Pending

P(r) will be calculated and displayed separately for the same assembly/model.

Rg（Guinier）	20.47 Å
Rg (electron density)	19.71 Å
Total Rg	20.32 Å
Atom count	1326
Residues	166
Excluded volume	23111 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`3wfn__assembly_1__model_1`	monomeric （1）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`3wfn__assembly_2__model_1`	monomeric （1）	Success	4.1.3-1-20251215 (887e7ef)	View Download
3	1	`3wfn__assembly_3__model_1`	monomeric （1）	Success	4.1.3-1-20251215 (887e7ef)	View Download
4	1	`3wfn__assembly_4__model_1`	monomeric （1）	Success	4.1.3-1-20251215 (887e7ef)	View Download

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4. Crystallography and Experiment 4. Crystallography & Experiment

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5. Entities and Polymers Entities & Polymers (2)

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Unit-cell length a length_a	72.830 Å
Unit-cell length b length_b	50.752 Å
Unit-cell length c length_c	150.666 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	91.48 °
Unit-cell angle γ angle_gamma	90.00 °
Molecules per unit cell Z z_pdb	8

Space group space_group	P 1 21 1
Space-group number int_tables_number	4
Crystal system crystal_system	—

Resolution resolution	1.950 Å
Low-resolution limit resolution_low	48.095 Å
R factor r_factor	0.2011
R_work r_work	0.2003
R_free r_free	0.2367

Description description	Calmodulin, Sodium channel protein type 8 subunit alpha
Molecular weight formula_weight	20481.6 kDa
Source method src_method	man
Copy count entity_count	4

Polymer type type	polypeptide(L)
Chain IDs strand_id	B,C,D,E
Atom count atom_count	5694

Crystal Structure of Nav1.6 IQ motif in complex with apo-CaM

1. Protein Identity and Related Structures Protein Identity & Related Structures

Calmodulin, Sodium channel protein type 8 subunit alpha

State in the Current Structure

Other States of the Same Protein in the Database

Calmodulin, Sodium channel protein type 8 subunit alpha

State in the Current Structure

Other States of the Same Protein in the Database

2. Structure Basics 2. Structure Basics

3. Official assembly/model SAXS Official SAXS Profiles

3wfn__assembly_4__model_1

3wfn__assembly_4__model_1 | I(q)

3wfn__assembly_4__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

Refinement Refinement

Diffraction experiment Diffraction

5. Entities and Polymers Entities & Polymers (2)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 water

7. Citations (1)

Source organism organism	Mus musculus
Common name common_name	mouse
NCBI taxonomy ID ncbi_taxonomy_id	10090
Host organism host_organism	Escherichia coli

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	595

Crystal Structure of Nav1.6 IQ motif in complex with apo-CaM

1. Protein Identity and Related Structures Protein Identity & Related Structures

Calmodulin, Sodium channel protein type 8 subunit alpha

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

Calmodulin, Sodium channel protein type 8 subunit alpha

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

2. Structure Basics 2. Structure Basics

3. Official assembly/model SAXS Official SAXS Profiles

3wfn__assembly_4__model_1

3wfn__assembly_4__model_1 | I(q)

3wfn__assembly_4__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

Refinement Refinement

Diffraction experiment Diffraction

5. Entities and Polymers Entities & Polymers (2)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 water

7. Citations (1)