SAXSdb — 2bn2

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

NEUROPHYSIN II

OrganismNot specified

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein homooligomer	Homooligomer	Protein 2	PHENYLALANINE × 2 TYROSINE × 2	Consistent with protein count
2	Protein homooligomer	Homooligomer	Protein 2	PHENYLALANINE × 2 TYROSINE × 2	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	NEU2_BOVIN
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–95； UniProt 32–126 Author chain C； PDBConstruct 1–95； UniProt 32–126 Author chain E； PDBConstruct 1–95； UniProt 32–126 Author chain G； PDBConstruct 1–95； UniProt 32–126

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	2bn2
Deposition date deposition_date	1998-12-18
Structure title title	CRYSTAL STRUCTURE OF BOVINE NEUROPHYSIN II COMPLEXED WITH THE VASOPRESSIN ANALOGUE PHE-TYR AMIDE
Keywords keywords	HORMONE PACKAGING, TRANSPORT, PROTEIN-PEPTIDE COMPLEX, HORMONE; HORMONE
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.

2bn2__assembly_2__model_1

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

Download this curve (.dat)

2bn2__assembly_2__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

2bn2__assembly_2__model_1 | P(r) · Pending

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

Rg（Guinier）	15.72 Å
Rg (electron density)	15.39 Å
Total Rg	16.03 Å
Atom count	1136
Residues	158
Excluded volume	19825 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`2bn2__assembly_1__model_1`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`2bn2__assembly_2__model_1`	dimeric （2）	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 (3)

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6. Fold Classification (SCOP + CATH) 8 domains

SCOP 2.08 (4 domains)

Domain ID domain_id	d2bn2a_
Class class	b — All beta proteins
Fold Fold fold	b.9 — Neurophysin II
Superfamily Superfamily superfamily	b.9.1 — Neurophysin II
Family Family family	b.9.1.1 — Neurophysin II

Domain ID domain_id	d2bn2c_
Class class	b — All beta proteins
Fold Fold fold	b.9 — Neurophysin II
Superfamily Superfamily superfamily	b.9.1 — Neurophysin II
Family Family family	b.9.1.1 — Neurophysin II

Domain ID domain_id	d2bn2e_
Class class	b — All beta proteins
Fold Fold fold	b.9 — Neurophysin II
Superfamily Superfamily superfamily	b.9.1 — Neurophysin II
Family Family family	b.9.1.1 — Neurophysin II

Domain ID domain_id	d2bn2g_
Class class	b — All beta proteins
Fold Fold fold	b.9 — Neurophysin II
Superfamily Superfamily superfamily	b.9.1 — Neurophysin II
Family Family family	b.9.1.1 — Neurophysin II

CATH v4.4 (4 domains)

Domain ID domain_id	2bn2A00
Class class	2 — Mainly Beta
Architecture architecture	60 — Sandwich
Topology topology	9 — Neurophysin II; Chain A
Homologous superfamily homologous superfamily	10 — Neurohypophysial hormone domain

Domain ID domain_id	2bn2C00
Class class	2 — Mainly Beta
Architecture architecture	60 — Sandwich
Topology topology	9 — Neurophysin II; Chain A
Homologous superfamily homologous superfamily	10 — Neurohypophysial hormone domain

Domain ID domain_id	2bn2E00
Class class	2 — Mainly Beta
Architecture architecture	60 — Sandwich
Topology topology	9 — Neurophysin II; Chain A
Homologous superfamily homologous superfamily	10 — Neurohypophysial hormone domain

Domain ID domain_id	2bn2G00
Class class	2 — Mainly Beta
Architecture architecture	60 — Sandwich
Topology topology	9 — Neurophysin II; Chain A
Homologous superfamily homologous superfamily	10 — Neurohypophysial hormone domain

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Unit-cell length a length_a	121.670 Å
Unit-cell length b length_b	67.960 Å
Unit-cell length c length_c	62.100 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	90.00 °
Unit-cell angle γ angle_gamma	90.00 °
Molecules per unit cell Z z_pdb	16

Space group space_group	P 21 21 21
Space-group number int_tables_number	19
Crystal system crystal_system	—

Resolution resolution	2.800 Å
Low-resolution limit resolution_low	8.000 Å
R factor r_factor	0.2080
R_work r_work	0.2080
R_free r_free	0.2620

Description description	NEUROPHYSIN II
Molecular weight formula_weight	9890.3 kDa
Source method src_method	nat
Copy count entity_count	4

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,C,E,G
Atom count atom_count	2324

CRYSTAL STRUCTURE OF BOVINE NEUROPHYSIN II COMPLEXED WITH THE VASOPRESSIN ANALOGUE PHE-TYR AMIDE

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

NEUROPHYSIN II

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

2bn2__assembly_2__model_1

2bn2__assembly_2__model_1 | I(q)

2bn2__assembly_2__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 (3)

Entity 1 Entity 1 polymer

Polymer Polymer

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 non-polymer

6. Fold Classification (SCOP + CATH) 8 domains

SCOP 2.08 (4 domains)

CATH v4.4 (4 domains)

7. Citations (4)

Description description	PHENYLALANINE
Molecular weight formula_weight	165.2 kDa
Source method src_method	syn
Copy count entity_count	4

Description description	TYROSINE
Molecular weight formula_weight	181.2 kDa
Source method src_method	syn
Copy count entity_count	4

CRYSTAL STRUCTURE OF BOVINE NEUROPHYSIN II COMPLEXED WITH THE VASOPRESSIN ANALOGUE PHE-TYR AMIDE

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

NEUROPHYSIN II

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

2bn2__assembly_2__model_1

2bn2__assembly_2__model_1 | I(q)

2bn2__assembly_2__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 (3)

Entity 1 Entity 1 polymer

Polymer Polymer

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 non-polymer

6. Fold Classification (SCOP + CATH) 8 domains

SCOP 2.08 (4 domains)

CATH v4.4 (4 domains)

7. Citations (4)