SAXSdb — 1pfn

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

PF4-M2 CHIMERA

Homo sapiens

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein homooligomer	Homooligomer	Protein 4	No other associated polymer	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	PLF4_HUMAN
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 6–68； UniProt 39–101 Author chain B； PDBConstruct 6–68； UniProt 39–101 Author chain C； PDBConstruct 6–68； UniProt 39–101 Author chain D； PDBConstruct 6–68； UniProt 39–101

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	1pfn
Deposition date deposition_date	1995-07-18
Structure title title	PF4-M2 CHIMERIC MUTANT WITH THE FIRST 10 N-TERMINAL RESIDUES OF R-PF4 REPLACED BY THE N-TERMINAL RESIDUES OF THE IL8 SEQUENCE. MODELS 16-27 OF A 27-MODEL SET.
Keywords keywords	CYTOKINE; CYTOKINE
Experimental Method method	SOLUTION NMR

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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.

1pfn__assembly_1__model_3

Assembly 1 · Model 3 · CRYSOL 4.1.3-1-20251215 (887e7ef)

Download this curve (.dat)

1pfn__assembly_1__model_3 | I(q)

100 plotted points; both axes use logarithmic scales.

1pfn__assembly_1__model_3 | P(r) · Pending

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

Rg（Guinier）	19.86 Å
Rg (electron density)	18.70 Å
Total Rg	19.93 Å
Atom count	4460
Residues	272
Excluded volume	38894 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`1pfn__assembly_1__model_1`	tetrameric （4）	Success	4.1.3-1-20251215 (887e7ef)	View Download
1	2	`1pfn__assembly_1__model_2`	tetrameric （4）	Success	4.1.3-1-20251215 (887e7ef)	View Download
1	3	`1pfn__assembly_1__model_3`	tetrameric （4）	Success	4.1.3-1-20251215 (887e7ef)	View Download
1	4	`1pfn__assembly_1__model_4`	tetrameric （4）	Success	4.1.3-1-20251215 (887e7ef)	View Download
1	5	`1pfn__assembly_1__model_5`	tetrameric （4）	Success	4.1.3-1-20251215 (887e7ef)	View Download
1	6	`1pfn__assembly_1__model_6`	tetrameric （4）	Success	4.1.3-1-20251215 (887e7ef)	View Download
1	7	`1pfn__assembly_1__model_7`	tetrameric （4）	Success	4.1.3-1-20251215 (887e7ef)	View Download
1	8	`1pfn__assembly_1__model_8`	tetrameric （4）	Success	4.1.3-1-20251215 (887e7ef)	View Download
1	9	`1pfn__assembly_1__model_9`	tetrameric （4）	Success	4.1.3-1-20251215 (887e7ef)	View Download
1	10	`1pfn__assembly_1__model_10`	tetrameric （4）	Success	4.1.3-1-20251215 (887e7ef)	View Download
1	11	`1pfn__assembly_1__model_11`	tetrameric （4）	Success	4.1.3-1-20251215 (887e7ef)	View Download
1	12	`1pfn__assembly_1__model_12`	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 (1)

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6. Fold Classification (SCOP + CATH) 8 domains

SCOP 2.08 (4 domains)

Domain ID domain_id	d1pfna_
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.9 — IL8-like
Superfamily Superfamily superfamily	d.9.1 — Interleukin 8-like chemokines
Family Family family	d.9.1.1 — Interleukin 8-like chemokines

Domain ID domain_id	d1pfnb_
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.9 — IL8-like
Superfamily Superfamily superfamily	d.9.1 — Interleukin 8-like chemokines
Family Family family	d.9.1.1 — Interleukin 8-like chemokines

Domain ID domain_id	d1pfnc_
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.9 — IL8-like
Superfamily Superfamily superfamily	d.9.1 — Interleukin 8-like chemokines
Family Family family	d.9.1.1 — Interleukin 8-like chemokines

Domain ID domain_id	d1pfnd_
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.9 — IL8-like
Superfamily Superfamily superfamily	d.9.1 — Interleukin 8-like chemokines
Family Family family	d.9.1.1 — Interleukin 8-like chemokines

CATH v4.4 (4 domains)

Domain ID domain_id	1pfnA00
Class class	2 — Mainly Beta
Architecture architecture	40 — Beta Barrel
Topology topology	50 — OB fold (Dihydrolipoamide Acetyltransferase, E2P)
Homologous superfamily homologous superfamily	40 —

Domain ID domain_id	1pfnB00
Class class	2 — Mainly Beta
Architecture architecture	40 — Beta Barrel
Topology topology	50 — OB fold (Dihydrolipoamide Acetyltransferase, E2P)
Homologous superfamily homologous superfamily	40 —

Domain ID domain_id	1pfnC00
Class class	2 — Mainly Beta
Architecture architecture	40 — Beta Barrel
Topology topology	50 — OB fold (Dihydrolipoamide Acetyltransferase, E2P)
Homologous superfamily homologous superfamily	40 —

Domain ID domain_id	1pfnD00
Class class	2 — Mainly Beta
Architecture architecture	40 — Beta Barrel
Topology topology	50 — OB fold (Dihydrolipoamide Acetyltransferase, E2P)
Homologous superfamily homologous superfamily	40 —

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Unit-cell length a length_a	1.000 Å
Unit-cell length b length_b	1.000 Å
Unit-cell length c length_c	1.000 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	1

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

Description description	PF4-M2 CHIMERA
Molecular weight formula_weight	7628.2 kDa
Source method src_method	man
Copy count entity_count	4

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B,C,D
Atom count atom_count	53520

Source organism organism	Homo sapiens
Common name common_name	human
NCBI taxonomy ID ncbi_taxonomy_id	9606
Host organism host_organism	Escherichia coli

PF4-M2 CHIMERIC MUTANT WITH THE FIRST 10 N-TERMINAL RESIDUES OF R-PF4 REPLACED BY THE N-TERMINAL RESIDUES OF THE IL8 SEQUENCE. MODELS 16-27 OF A 27-MODEL SET.

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

PF4-M2 CHIMERA

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

1pfn__assembly_1__model_3

1pfn__assembly_1__model_3 | I(q)

1pfn__assembly_1__model_3 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

5. Entities and Polymers Entities & Polymers (1)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

6. Fold Classification (SCOP + CATH) 8 domains

SCOP 2.08 (4 domains)

CATH v4.4 (4 domains)

7. Citations (2)

PF4-M2 CHIMERIC MUTANT WITH THE FIRST 10 N-TERMINAL RESIDUES OF R-PF4 REPLACED BY THE N-TERMINAL RESIDUES OF THE IL8 SEQUENCE. MODELS 16-27 OF A 27-MODEL SET.

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

PF4-M2 CHIMERA

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

1pfn__assembly_1__model_3

1pfn__assembly_1__model_3 | I(q)

1pfn__assembly_1__model_3 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

5. Entities and Polymers Entities & Polymers (1)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

6. Fold Classification (SCOP + CATH) 8 domains

SCOP 2.08 (4 domains)

CATH v4.4 (4 domains)

7. Citations (2)