SAXSdb — 1qg7

▼

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

STROMAL CELL-DERIVED FACTOR 1 ALPHA

Homo sapiens

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein homooligomer	Homooligomer	Protein 2	SULFATE ION × 3 water × 2	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	SDF1_HUMAN
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–67； UniProt 22–88 Author chain B； PDBConstruct 1–67； UniProt 22–88

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	1qg7
Deposition date deposition_date	1999-04-21
Structure title title	STROMA CELL-DERIVED FACTOR-1ALPHA (SDF-1ALPHA)
Keywords keywords	CXC-CHEMOKINE, CYTOKINE; CYTOKINE
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.

1qg7__assembly_1__model_1

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

Download this curve (.dat)

1qg7__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

1qg7__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	16.19 Å
Rg (electron density)	14.66 Å
Total Rg	15.92 Å
Atom count	1035
Residues	128
Excluded volume	18480 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`1qg7__assembly_1__model_1`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download

▶

4. Crystallography and Experiment 4. Crystallography & Experiment

▶

5. Entities and Polymers Entities & Polymers (3)

Entity 1 Entity 1 polymer

Description description	STROMAL CELL-DERIVED FACTOR 1 ALPHA
Molecular weight formula_weight	7849.3 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	1067

KPVSLSYRCPCRFFESHVARANVKHLKILNTPNCALQIVARLKNNNRQVCIDPKLKWIQEYLEKALN

Source Source

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

Entity 2 Entity 2 non-polymer

Description description	SULFATE ION
Molecular weight formula_weight	96.1 kDa
Source method src_method	syn
Copy count entity_count	3

Entity 3 Entity 3 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	32

▼

6. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

Domain ID domain_id	d1qg7a_
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	d1qg7b_
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 (2 domains)

Domain ID domain_id	1qg7A00
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	1qg7B00
Class class	2 — Mainly Beta
Architecture architecture	40 — Beta Barrel
Topology topology	50 — OB fold (Dihydrolipoamide Acetyltransferase, E2P)
Homologous superfamily homologous superfamily	40 —

▶

Unit-cell length a length_a	38.900 Å
Unit-cell length b length_b	51.200 Å
Unit-cell length c length_c	66.500 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	8

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

Resolution resolution	2.000 Å
Low-resolution limit resolution_low	60.000 Å
R factor r_factor	—
R_work r_work	0.1890
R_free r_free	0.2580

STROMA CELL-DERIVED FACTOR-1ALPHA (SDF-1ALPHA)

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

STROMAL CELL-DERIVED FACTOR 1 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

1qg7__assembly_1__model_1

1qg7__assembly_1__model_1 | I(q)

1qg7__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 (3)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 water

6. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

CATH v4.4 (2 domains)

7. Citations (1)

STROMA CELL-DERIVED FACTOR-1ALPHA (SDF-1ALPHA)

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

STROMAL CELL-DERIVED FACTOR 1 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

1qg7__assembly_1__model_1

1qg7__assembly_1__model_1 | I(q)

1qg7__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 (3)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 water

6. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

CATH v4.4 (2 domains)

7. Citations (1)