3buk

Crystal Structure of the Neurotrophin-3 and p75NTR Symmetrical Complex

Method: X-RAY DIFFRACTION

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

Neurotrophin-3

Homo sapiens

UniProt P20783

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 4	Tumor necrosis factor receptor superfamily member 16 × 2 （P07174） 2-acetamido-2-deoxy-beta-D-glucopyranose × 2 water × 4	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	NT3_HUMAN
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–119； UniProt 139–257 Author chain B； PDBConstruct 1–119； UniProt 139–257

Tumor necrosis factor receptor superfamily member 16

Rattus norvegicus

UniProt P07174

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 4	Neurotrophin-3 × 2 （P20783） 2-acetamido-2-deoxy-beta-D-glucopyranose × 2 water × 4	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	TNR16_RAT
Isoform	—
PDB entities	2
Chains and sequence ranges	Author chain C； PDBConstruct 1–161； UniProt 29–189 Author chain D； PDBConstruct 1–161； UniProt 29–189

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	3buk
Deposition date deposition_date	2008-01-02
Structure title title	Crystal Structure of the Neurotrophin-3 and p75NTR Symmetrical Complex
Keywords keywords	;Ligand-receptor complex, BETA-sheet, Neurotrophin-3, p75NTR, Cleavage on pair of basic residues, Glycoprotein, Growth factor, Secreted, Apoptosis, Developmental protein, Differentiation, Membrane, Neurogenesis, Transmembrane, SIGNALING PROTEIN ;; SIGNALING 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.

3buk__assembly_1__model_1

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

Download this curve (.dat)

3buk__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

3buk__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	30.16 Å
Rg (electron density)	29.58 Å
Total Rg	30.18 Å
Atom count	4108
Residues	540
Excluded volume	71286 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`3buk__assembly_1__model_1`	tetrameric （4）	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 (4)

Entity 1 Entity 1 polymer

Description description	Neurotrophin-3
Molecular weight formula_weight	13649.4 kDa
Source method src_method	man
Copy count entity_count	2

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B
Atom count atom_count	4251

YAEHKSHRGEYSVCDSESLWVTDKSSAIDIRGHQVTVLGEIKTGNSPVKQYFYETRCKEARPVKNGCRGIDDKHWNSQCKTSQTYVRALTSENNKLVGWRWIRIDTSCVCALSRKIGRT

Source Source

Source organism organism	Homo sapiens
Common name common_name	human
Host organism host_organism	Escherichia coli

Entity 2 Entity 2 polymer

Description description	Tumor necrosis factor receptor superfamily member 16
Molecular weight formula_weight	18059.9 kDa
Source method src_method	man
Copy count entity_count	2

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	C,D

KETCSTGLYTHSGECCKACNLGEGVAQPCGANQTVCEPCLDSVTFSDVVSATEPCKPCTECLGLQSMSAPCVEADDAVCRCAYGYYQDEETGHCEACSVCEVGSGLVFSCQDKQNTVCEECPEGTYSDEANHVDPCLPCTVCEDTERQLRECTPWADAECEHHHHHH

Source Source

Source organism organism	Rattus norvegicus
Common name common_name	rat
Host organism host_organism	Spodoptera frugiperda

Entity 3 Entity 3 non-polymer

Description description	2-acetamido-2-deoxy-beta-D-glucopyranose
Molecular weight formula_weight	221.2 kDa
Source method src_method	man
Copy count entity_count	2

Entity 4 Entity 4 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	143

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6. Fold Classification (SCOP + CATH) 16 domains

SCOP 2.08 (10 domains)

Domain ID domain_id	d3buka_
Class class	g — Small proteins
Fold Fold fold	g.17 — Cystine-knot cytokines
Superfamily Superfamily superfamily	g.17.1 — Cystine-knot cytokines
Family Family family	g.17.1.3 — Neurotrophin

Domain ID domain_id	d3bukb_
Class class	g — Small proteins
Fold Fold fold	g.17 — Cystine-knot cytokines
Superfamily Superfamily superfamily	g.17.1 — Cystine-knot cytokines
Family Family family	g.17.1.3 — Neurotrophin

Domain ID domain_id	d3bukc1
Class class	g — Small proteins
Fold Fold fold	g.24 — TNF receptor-like
Superfamily Superfamily superfamily	g.24.1 — TNF receptor-like
Family Family family	g.24.1.1 — TNF receptor-like

Domain ID domain_id	d3bukc2
Class class	g — Small proteins
Fold Fold fold	g.24 — TNF receptor-like
Superfamily Superfamily superfamily	g.24.1 — TNF receptor-like
Family Family family	g.24.1.1 — TNF receptor-like

Domain ID domain_id	d3bukc3
Class class	g — Small proteins
Fold Fold fold	g.24 — TNF receptor-like
Superfamily Superfamily superfamily	g.24.1 — TNF receptor-like
Family Family family	g.24.1.1 — TNF receptor-like

Domain ID domain_id	d3bukc4
Class class	g — Small proteins
Fold Fold fold	g.24 — TNF receptor-like
Superfamily Superfamily superfamily	g.24.1 — TNF receptor-like
Family Family family	g.24.1.1 — TNF receptor-like

Domain ID domain_id	d3bukd1
Class class	g — Small proteins
Fold Fold fold	g.24 — TNF receptor-like
Superfamily Superfamily superfamily	g.24.1 — TNF receptor-like
Family Family family	g.24.1.1 — TNF receptor-like

Domain ID domain_id	d3bukd2
Class class	g — Small proteins
Fold Fold fold	g.24 — TNF receptor-like
Superfamily Superfamily superfamily	g.24.1 — TNF receptor-like
Family Family family	g.24.1.1 — TNF receptor-like

Domain ID domain_id	d3bukd3
Class class	g — Small proteins
Fold Fold fold	g.24 — TNF receptor-like
Superfamily Superfamily superfamily	g.24.1 — TNF receptor-like
Family Family family	g.24.1.1 — TNF receptor-like

Domain ID domain_id	d3bukd4
Class class	g — Small proteins
Fold Fold fold	g.24 — TNF receptor-like
Superfamily Superfamily superfamily	g.24.1 — TNF receptor-like
Family Family family	g.24.1.1 — TNF receptor-like

CATH v4.4 (6 domains)

Domain ID domain_id	3bukA00
Class class	2 — Mainly Beta
Architecture architecture	10 — Ribbon
Topology topology	90 — Cystine Knot Cytokines, subunit B
Homologous superfamily homologous superfamily	10 — Cystine-knot cytokines

Domain ID domain_id	3bukB00
Class class	2 — Mainly Beta
Architecture architecture	10 — Ribbon
Topology topology	90 — Cystine Knot Cytokines, subunit B
Homologous superfamily homologous superfamily	10 — Cystine-knot cytokines

Domain ID domain_id	3bukC01
Class class	2 — Mainly Beta
Architecture architecture	10 — Ribbon
Topology topology	50 — Tumor Necrosis Factor Receptor, subunit A; domain 2
Homologous superfamily homologous superfamily	10 — Tumor Necrosis Factor Receptor, subunit A, domain 2

Domain ID domain_id	3bukC02
Class class	2 — Mainly Beta
Architecture architecture	10 — Ribbon
Topology topology	50 — Tumor Necrosis Factor Receptor, subunit A; domain 2
Homologous superfamily homologous superfamily	10 — Tumor Necrosis Factor Receptor, subunit A, domain 2

Domain ID domain_id	3bukD01
Class class	2 — Mainly Beta
Architecture architecture	10 — Ribbon
Topology topology	50 — Tumor Necrosis Factor Receptor, subunit A; domain 2
Homologous superfamily homologous superfamily	10 — Tumor Necrosis Factor Receptor, subunit A, domain 2

Domain ID domain_id	3bukD02
Class class	2 — Mainly Beta
Architecture architecture	10 — Ribbon
Topology topology	50 — Tumor Necrosis Factor Receptor, subunit A; domain 2
Homologous superfamily homologous superfamily	10 — Tumor Necrosis Factor Receptor, subunit A, domain 2

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Unit-cell length a length_a	125.800 Å
Unit-cell length b length_b	125.800 Å
Unit-cell length c length_c	133.100 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	90.00 °
Unit-cell angle γ angle_gamma	120.00 °
Molecules per unit cell Z z_pdb	18

Space group space_group	H 3
Space-group number int_tables_number	146
Crystal system crystal_system	—

Resolution resolution	2.600 Å
Low-resolution limit resolution_low	50.000 Å
R factor r_factor	0.2275
R_work r_work	0.2242
R_free r_free	0.2877

Crystal Structure of the Neurotrophin-3 and p75NTR Symmetrical Complex

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

Neurotrophin-3

State in the Current Structure

Other States of the Same Protein in the Database

Tumor necrosis factor receptor superfamily member 16

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

3buk__assembly_1__model_1

3buk__assembly_1__model_1 | I(q)

3buk__assembly_1__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 (4)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 polymer

Polymer Polymer

Source Source

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 water

6. Fold Classification (SCOP + CATH) 16 domains

SCOP 2.08 (10 domains)

CATH v4.4 (6 domains)

7. Citations (1)

Crystal Structure of the Neurotrophin-3 and p75NTR Symmetrical Complex

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

Neurotrophin-3

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

Tumor necrosis factor receptor superfamily member 16

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

3buk__assembly_1__model_1

3buk__assembly_1__model_1 | I(q)

3buk__assembly_1__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 (4)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 polymer

Polymer Polymer

Source Source

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 water

6. Fold Classification (SCOP + CATH) 16 domains

SCOP 2.08 (10 domains)

CATH v4.4 (6 domains)

7. Citations (1)