8j90

Cryo-EM structure of DDM1-nucleosome complex

Method: ELECTRON MICROSCOPY

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

Histone H3.1

Arabidopsis thaliana

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein–DNA	Heteromer	Protein 9 DNA 2	Histone H4 × 2 （P59259） HTA6 × 2 （Q9FJE8） HTB9 × 2 （O23629） DNA (169-MER) × 1 DNA (169-MER) × 1 ATP-dependent DNA helicase DDM1 × 1 （Q9XFH4）	Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	H31_ARATH
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 4–139； UniProt 1–136 Author chain E； PDBConstruct 4–139； UniProt 1–136

Histone H4

Arabidopsis thaliana

UniProt P59259

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein–DNA	Heteromer	Protein 9 DNA 2	Histone H3.1 × 2 （P59226） HTA6 × 2 （Q9FJE8） HTB9 × 2 （O23629） DNA (169-MER) × 1 DNA (169-MER) × 1 ATP-dependent DNA helicase DDM1 × 1 （Q9XFH4）	Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	H4_ARATH
Isoform	—
PDB entities	2
Chains and sequence ranges	Author chain B； PDBConstruct 4–106； UniProt 1–103 Author chain F； PDBConstruct 4–106； UniProt 1–103

HTA6

Arabidopsis thaliana

UniProt Q9FJE8

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein–DNA	Heteromer	Protein 9 DNA 2	Histone H3.1 × 2 （P59226） Histone H4 × 2 （P59259） HTB9 × 2 （O23629） DNA (169-MER) × 1 DNA (169-MER) × 1 ATP-dependent DNA helicase DDM1 × 1 （Q9XFH4）	Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	H2A7_ARATH
Isoform	—
PDB entities	3
Chains and sequence ranges	Author chain C； PDBConstruct 4–153； UniProt 1–150 Author chain G； PDBConstruct 4–153； UniProt 1–150

HTB9

Arabidopsis thaliana

UniProt O23629

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein–DNA	Heteromer	Protein 9 DNA 2	Histone H3.1 × 2 （P59226） Histone H4 × 2 （P59259） HTA6 × 2 （Q9FJE8） DNA (169-MER) × 1 DNA (169-MER) × 1 ATP-dependent DNA helicase DDM1 × 1 （Q9XFH4）	Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	H2B6_ARATH
Isoform	—
PDB entities	4
Chains and sequence ranges	Author chain D； PDBConstruct 4–153； UniProt 1–150 Author chain H； PDBConstruct 4–153； UniProt 1–150

ATP-dependent DNA helicase DDM1

Arabidopsis thaliana

UniProt Q9XFH4

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein–DNA	Heteromer	Protein 9 DNA 2	Histone H3.1 × 2 （P59226） Histone H4 × 2 （P59259） HTA6 × 2 （Q9FJE8） HTB9 × 2 （O23629） DNA (169-MER) × 1 DNA (169-MER) × 1	Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	DDM1_ARATH
Isoform	—
PDB entities	7
Chains and sequence ranges	Author chain K； PDBConstruct 4–767； UniProt 1–764

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	8j90
Deposition date deposition_date	2023-05-02
Structure title title	Cryo-EM structure of DDM1-nucleosome complex
Keywords keywords	Chromatin, Epigenetics, Histon variant, chromatin remodeler, NUCLEAR PROTEIN; NUCLEAR PROTEIN
Experimental Method method	ELECTRON MICROSCOPY

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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.

8j90__assembly_1__model_1

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

Download this curve (.dat)

8j90__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

8j90__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	43.93 Å
Rg (electron density)	42.98 Å
Total Rg	43.35 Å
Atom count	13881
Residues	1390
Excluded volume	233990 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`8j90__assembly_1__model_1`	11-meric （11）	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 (7)

Entity 1 Entity 1 polymer

Description description	Histone H3.1
Molecular weight formula_weight	15583.2 kDa
Source method src_method	man
Copy count entity_count	2

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,E
Atom count atom_count	13881

GSHMARTKQTARKSTGGKAPRKQLATKAARKSAPATGGVKKPHRFRPGTVALREIRKYQKSTELLIRKLPFQRLVREIAQDFKTDLRFQSSAVAALQEAAEAYLVGLFEDTNLCAIHAKRVTIMPKDIQLARRIRGERA

Source Source

Source organism organism	Arabidopsis thaliana
Common name common_name	thale cress
NCBI taxonomy ID ncbi_taxonomy_id	3702
Host organism host_organism	Escherichia coli

Entity 2 Entity 2 polymer

Description description	Histone H4
Molecular weight formula_weight	11718.7 kDa
Source method src_method	man
Copy count entity_count	2

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	B,F

GSHMSGRGKGGKGLGKGGAKRHRKVLRDNIQGITKPAIRRLARRGGVKRISGLIYEETRGVLKIFLENVIRDAVTYTEHARRKTVTAMDVVYALKRQGRTLYGFGG

Source Source

Source organism organism	Arabidopsis thaliana
Common name common_name	thale cress
NCBI taxonomy ID ncbi_taxonomy_id	3702
Host organism host_organism	Escherichia coli

Entity 3 Entity 3 polymer

Description description	HTA6
Molecular weight formula_weight	16280.2 kDa
Source method src_method	man
Copy count entity_count	2

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	C,G

GSHMESTGKVKKAFGGRKPPGAPKTKSVSKSMKAGLQFPVGRITRFLKKGRYAQRLGGGAPVYMAAVLEYLAAEVLELAGNAARDNKKSRIIPRHLLLAIRNDEELGKLLSGVTIAHGGVLPNINSVLLPKKSATKPAEEKATKSPVKSPKKA

Source Source

Source organism organism	Arabidopsis thaliana
Common name common_name	thale cress
NCBI taxonomy ID ncbi_taxonomy_id	3702
Host organism host_organism	Escherichia coli

Entity 4 Entity 4 polymer

Description description	HTB9
Molecular weight formula_weight	16756.7 kDa
Source method src_method	man
Copy count entity_count	2

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	D,H

GSHMAPRAEKKPAEKKPAAEKPVEEKSKAEKAPAEKKPKAGKKLPKEAGAGGDKKKKMKKKSVETYKIYIFKVLKQVHPDIGISSKAMGIMNSFINDIFEKLASESSKLARYNKKPTITSREIQTAVRLVLPGELAKHAVSEGTKAVTKFTSS

Source Source

Source organism organism	Arabidopsis thaliana
Common name common_name	thale cress
NCBI taxonomy ID ncbi_taxonomy_id	3702
Host organism host_organism	Escherichia coli

Entity 5 Entity 5 polymer

Description description	DNA (169-MER)
Molecular weight formula_weight	51922.1 kDa
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polydeoxyribonucleotide
Chain IDs strand_id	I

ATCGGACCCTATCGCGAGCCAGGCCTGAGAATCCGGTGCCGAGGCCGCTCAATTGGTCGTAGACAGCTCTAGCACCGCTTAAACGCACGTACGCGCTGTCCCCCGCGTTTTAACCGCCAAGGGGATTACTCCCTAGTCTCCAGGCACGTGTCAGATATATACATCCGAT

Source Source

Source organism organism	synthetic construct
NCBI taxonomy ID ncbi_taxonomy_id	32630
Host organism host_organism	Escherichia coli

Entity 6 Entity 6 polymer

Description description	DNA (169-MER)
Molecular weight formula_weight	52424.4 kDa
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polydeoxyribonucleotide
Chain IDs strand_id	J

ATCGGATGTATATATCTGACACGTGCCTGGAGACTAGGGAGTAATCCCCTTGGCGGTTAAAACGCGGGGGACAGCGCGTACGTGCGTTTAAGCGGTGCTAGAGCTGTCTACGACCAATTGAGCGGCCTCGGCACCGGATTCTCAGGCCTGGCTCGCGATAGGGTCCGAT

Source Source

Source organism organism	synthetic construct
NCBI taxonomy ID ncbi_taxonomy_id	32630
Host organism host_organism	Escherichia coli

Entity 7 Entity 7 polymer

Description description	ATP-dependent DNA helicase DDM1
Molecular weight formula_weight	87050.1 kDa
EC 编号 ec_number	3.6.4.12
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	K

GPHMVSLRSRKVIPASEMVSDGKTEKDASGDSPTSVLNEEENCEEKSVTVVEEEILLAKNGDSSLISEAMAQEEEQLLKLREDEEKANNAGSAVAPNLNETQFTKLDELLTQTQLYSEFLLEKMEDITINGIESESQKAEPEKTGRGRKRKAASQYNNTKAKRAVAAMISRSKEDGETINSDLTEEETVIKLQNELCPLLTGGQLKSYQLKGVKWLISLWQNGLNGILADQMGLGKTIQTIGFLSHLKGNGLDGPYLVIAPLSTLSNWFNEIARFTPSINAIIYHGDKNQRDELRRKHMPKTVGPKFPIVITSYEVAMNDAKRILRHYPWKYVVIDEGHRLKNHKCKLLRELKHLKMDNKLLLTGTPLQNNLSELWSLLNFILPDIFTSHDEFESWFDFSEKNKNEATKEEEEKRRAQVVSKLHGILRPFILRRMKCDVELSLPRKKEIIMYATMTDHQKKFQEHLVNNTLEAHLGENAIRGQGWKGKLNNLVIQLRKNCNHPDLLQGQIDGSYLYPPVEEIVGQCGKFRLLERLLVRLFANNHKVLIFSQWTKLLDIMDYYFSEKGFEVCRIDGSVKLDERRRQIKDFSDEKSSCSIFLLSTRAGGLGINLTAADTCILYDSDWNPQMDLQAMDRCHRIGQTKPVHVYRLSTAQSIETRVLKRAYSKLKLEHVVIGQGQFHQERAKSSTPLEEEDILALLKEDETAEDKLIQTDISDADLDRLLDRSDLTITAPGETQAAEAFPVKGPGWEVVLPSSGGMLSSLNS

Source Source

Source organism organism	Arabidopsis thaliana
Common name common_name	thale cress
NCBI taxonomy ID ncbi_taxonomy_id	3702
Host organism host_organism	Escherichia coli

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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	—

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

Resolution resolution	4.71 Å
Resolution测定Method resolution_method	—
颗粒数 num_particles	34559

Cryo-EM structure of DDM1-nucleosome complex

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

Histone H3.1

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

Histone H4

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

HTA6

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

HTB9

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

ATP-dependent DNA helicase DDM1

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

8j90__assembly_1__model_1

8j90__assembly_1__model_1 | I(q)

8j90__assembly_1__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

冷冻电镜 EM 3D

5. Entities and Polymers Entities & Polymers (7)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 polymer

Polymer Polymer

Source Source

Entity 3 Entity 3 polymer

Polymer Polymer

Source Source

Entity 4 Entity 4 polymer

Polymer Polymer

Source Source

Entity 5 Entity 5 polymer

Polymer Polymer

Source Source

Entity 6 Entity 6 polymer

Polymer Polymer

Source Source

Entity 7 Entity 7 polymer

Polymer Polymer

Source Source

7. Citations (1)