SAXSdb — 8cpg

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

High mobility group protein HMG-I/HMG-Y

OrganismNot specified

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein–DNA	Homooligomer	Protein 3 DNA 6	;DNA (5'-D(CPGPTPTPAPAPTPTPAPAPCPG)-3') ; × 6 MAGNESIUM ION × 4 water × 9	Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	HMGA1_HUMAN
Isoform	—
PDB entities	2
Chains and sequence ranges	Author chain G； PDBConstruct 2–10； UniProt 23–31 Author chain H； PDBConstruct 2–10； UniProt 23–31 Author chain I； PDBConstruct 2–10； UniProt 23–31

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	8cpg
Deposition date deposition_date	2023-03-02
Structure title title	Structure of the AT-Hook 1 peptide from the mammalian HMGA protein in complex with DNA
Keywords keywords	Mammalian High Mobility Group protein (HMGA1) AT-hook peptides, DNA BINDING PROTEIN; DNA BINDING 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.

8cpg__assembly_1__model_1

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

Download this curve (.dat)

8cpg__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

8cpg__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	20.63 Å
Rg (electron density)	19.83 Å
Total Rg	20.50 Å
Atom count	1597
Residues	90
Excluded volume	23911 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`8cpg__assembly_1__model_1`	nonameric （9）	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	;DNA (5'-D(CPGPTPTPAPAPTPTPAPAPCPG)-3') ;
Molecular weight formula_weight	3661.4 kDa
Source method src_method	syn
Copy count entity_count	6

Polymer Polymer

Polymer type type	polydeoxyribonucleotide
Chain IDs strand_id	A,B,C,D,E,F
Atom count atom_count	1966

CGTTAATTAACG

Entity 2 Entity 2 polymer

Description description	High mobility group protein HMG-I/HMG-Y
Molecular weight formula_weight	1142.4 kDa
Source method src_method	syn
Copy count entity_count	3

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	G,H,I

XKRGRGRPRK

Entity 3 Entity 3 non-polymer

Description description	MAGNESIUM ION
Molecular weight formula_weight	24.3 kDa
Source method src_method	syn
Copy count entity_count	4

Entity 4 Entity 4 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	361

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Unit-cell length a length_a	43.635 Å
Unit-cell length b length_b	43.635 Å
Unit-cell length c length_c	97.480 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	P 32
Space-group number int_tables_number	145
Crystal system crystal_system	—

Resolution resolution	1.400 Å
Low-resolution limit resolution_low	37.790 Å
R factor r_factor	0.1260
R_work r_work	0.1242
R_free r_free	0.1581

Structure of the AT-Hook 1 peptide from the mammalian HMGA protein in complex with DNA

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

High mobility group protein HMG-I/HMG-Y

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

8cpg__assembly_1__model_1

8cpg__assembly_1__model_1 | I(q)

8cpg__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

Entity 2 Entity 2 polymer

Polymer Polymer

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 water

7. Citations (1)

Structure of the AT-Hook 1 peptide from the mammalian HMGA protein in complex with DNA

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

High mobility group protein HMG-I/HMG-Y

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

8cpg__assembly_1__model_1

8cpg__assembly_1__model_1 | I(q)

8cpg__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

Entity 2 Entity 2 polymer

Polymer Polymer

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 water

7. Citations (1)