SAXSdb — 1pos

▼

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

PORCINE PANCREATIC SPASMOLYTIC POLYPEPTIDE

Sus scrofa

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein monomer	Monomer	Protein 1	No other associated polymer	Consistent with protein count
2	Protein monomer	Monomer	Protein 1	No other associated polymer	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	TFF2_PIG
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 2–106； UniProt 23–127 Author chain B； PDBConstruct 2–106； UniProt 23–127

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.

▼

2. Structure Basics 2. Structure Basics

Entry ID entry_id	1pos
Deposition date deposition_date	1993-10-08
Structure title title	CRYSTAL STRUCTURE OF A NOVEL DISULFIDE-LINKED "TREFOIL" MOTIF FOUND IN A LARGE FAMILY OF PUTATIVE GROWTH FACTORS
Keywords keywords	GROWTH FACTOR; GROWTH FACTOR
Experimental Method method	X-RAY DIFFRACTION

▼

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.

1pos__assembly_1__model_1

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

Download this curve (.dat)

1pos__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

1pos__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	15.24 Å
Rg (electron density)	14.97 Å
Total Rg	15.32 Å
Atom count	1
Residues	0
Excluded volume	13817 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`1pos__assembly_1__model_1`	monomeric （1）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`1pos__assembly_2__model_1`	monomeric （1）	Success	4.1.3-1-20251215 (887e7ef)	View Download

▶

4. Crystallography and Experiment 4. Crystallography & Experiment

▶

5. Entities and Polymers Entities & Polymers (1)

▼

6. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (4 domains)

Domain ID domain_id	d1posa1
Class class	g — Small proteins
Fold Fold fold	g.16 — Trefoil/Plexin domain-like
Superfamily Superfamily superfamily	g.16.1 — Trefoil
Family Family family	g.16.1.1 — Trefoil

Domain ID domain_id	d1posa2
Class class	g — Small proteins
Fold Fold fold	g.16 — Trefoil/Plexin domain-like
Superfamily Superfamily superfamily	g.16.1 — Trefoil
Family Family family	g.16.1.1 — Trefoil

Domain ID domain_id	d1posb1
Class class	g — Small proteins
Fold Fold fold	g.16 — Trefoil/Plexin domain-like
Superfamily Superfamily superfamily	g.16.1 — Trefoil
Family Family family	g.16.1.1 — Trefoil

Domain ID domain_id	d1posb2
Class class	g — Small proteins
Fold Fold fold	g.16 — Trefoil/Plexin domain-like
Superfamily Superfamily superfamily	g.16.1 — Trefoil
Family Family family	g.16.1.1 — Trefoil

▶

Unit-cell length a length_a	181.680 Å
Unit-cell length b length_b	54.690 Å
Unit-cell length c length_c	72.790 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	I 21 21 21
Space-group number int_tables_number	24
Crystal system crystal_system	—

Resolution resolution	2.600 Å
Low-resolution limit resolution_low	— Å
R factor r_factor	0.2190
R_work r_work	0.2190
R_free r_free	—

Description description	PORCINE PANCREATIC SPASMOLYTIC POLYPEPTIDE
Molecular weight formula_weight	11735.3 kDa
Source method src_method	man
Copy count entity_count	2

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B
Atom count atom_count	212

CRYSTAL STRUCTURE OF A NOVEL DISULFIDE-LINKED "TREFOIL" MOTIF FOUND IN A LARGE FAMILY OF PUTATIVE GROWTH FACTORS

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

PORCINE PANCREATIC SPASMOLYTIC POLYPEPTIDE

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

1pos__assembly_1__model_1

1pos__assembly_1__model_1 | I(q)

1pos__assembly_1__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

Refinement Refinement

5. Entities and Polymers Entities & Polymers (1)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

6. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (4 domains)

7. Citations (2)

Source organism organism	Sus scrofa
Common name common_name	pig
NCBI taxonomy ID ncbi_taxonomy_id	9823

CRYSTAL STRUCTURE OF A NOVEL DISULFIDE-LINKED "TREFOIL" MOTIF FOUND IN A LARGE FAMILY OF PUTATIVE GROWTH FACTORS

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

PORCINE PANCREATIC SPASMOLYTIC POLYPEPTIDE

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

1pos__assembly_1__model_1

1pos__assembly_1__model_1 | I(q)

1pos__assembly_1__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

Refinement Refinement

5. Entities and Polymers Entities & Polymers (1)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

6. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (4 domains)

7. Citations (2)