6kiw

Cryo-EM structure of human MLL3-ubNCP complex (4.0 angstrom)

Method: ELECTRON MICROSCOPY
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1. Protein Identity and Related Structures Protein Identity & Related Structures

Histone H3

Xenopus laevis

UniProt A0A310TTQ1

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein–DNA Heteromer Protein 13 DNA 2 Histone H4 × 2 (P62799) Histone H2A × 2 (Q6AZJ8) Histone H2B 1.1 × 2 (P02281) DNA (144-MER) × 1 DNA (145-MER) × 1 Histone-lysine N-methyltransferase 2C × 1 (Q8NEZ4) Retinoblastoma-binding protein 5 × 1 (Q15291) Ubiquitin × 1 (P62979) WD repeat-containing protein 5 × 1 (P61964) Set1/Ash2 histone methyltransferase complex subunit ASH2 × 1 (Q9UBL3) ZINC ION × 1 Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence
UniProt name A0A310TTQ1_XENLA
Isoform —
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 1–135; UniProt 2–136 Author chain E; PDBConstruct 1–135; UniProt 2–136

Histone H4

Xenopus laevis

UniProt P62799

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein–DNA Heteromer Protein 13 DNA 2 Histone H3 × 2 (A0A310TTQ1) Histone H2A × 2 (Q6AZJ8) Histone H2B 1.1 × 2 (P02281) DNA (144-MER) × 1 DNA (145-MER) × 1 Histone-lysine N-methyltransferase 2C × 1 (Q8NEZ4) Retinoblastoma-binding protein 5 × 1 (Q15291) Ubiquitin × 1 (P62979) WD repeat-containing protein 5 × 1 (P61964) Set1/Ash2 histone methyltransferase complex subunit ASH2 × 1 (Q9UBL3) ZINC ION × 1 Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence
UniProt name H4_XENLA
Isoform —
PDB entities 2
Chains and sequence ranges Author chain B; PDBConstruct 1–102; UniProt 2–103 Author chain F; PDBConstruct 1–102; UniProt 2–103

Histone H2A

Xenopus laevis

UniProt Q6AZJ8

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein–DNA Heteromer Protein 13 DNA 2 Histone H3 × 2 (A0A310TTQ1) Histone H4 × 2 (P62799) Histone H2B 1.1 × 2 (P02281) DNA (144-MER) × 1 DNA (145-MER) × 1 Histone-lysine N-methyltransferase 2C × 1 (Q8NEZ4) Retinoblastoma-binding protein 5 × 1 (Q15291) Ubiquitin × 1 (P62979) WD repeat-containing protein 5 × 1 (P61964) Set1/Ash2 histone methyltransferase complex subunit ASH2 × 1 (Q9UBL3) ZINC ION × 1 Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence
UniProt name Q6AZJ8_XENLA
Isoform —
PDB entities 3
Chains and sequence ranges Author chain C; PDBConstruct 1–129; UniProt 2–130 Author chain G; PDBConstruct 1–129; UniProt 2–130

Histone H2B 1.1

Xenopus laevis

UniProt P02281

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein–DNA Heteromer Protein 13 DNA 2 Histone H3 × 2 (A0A310TTQ1) Histone H4 × 2 (P62799) Histone H2A × 2 (Q6AZJ8) DNA (144-MER) × 1 DNA (145-MER) × 1 Histone-lysine N-methyltransferase 2C × 1 (Q8NEZ4) Retinoblastoma-binding protein 5 × 1 (Q15291) Ubiquitin × 1 (P62979) WD repeat-containing protein 5 × 1 (P61964) Set1/Ash2 histone methyltransferase complex subunit ASH2 × 1 (Q9UBL3) ZINC ION × 1 Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence
UniProt name H2B11_XENLA
Isoform —
PDB entities 4
Chains and sequence ranges Author chain D; PDBConstruct 1–122; UniProt 5–126 Author chain H; PDBConstruct 1–122; UniProt 5–126

Histone-lysine N-methyltransferase 2C

Homo sapiens

UniProt Q8NEZ4

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein–DNA Heteromer Protein 13 DNA 2 Histone H3 × 2 (A0A310TTQ1) Histone H4 × 2 (P62799) Histone H2A × 2 (Q6AZJ8) Histone H2B 1.1 × 2 (P02281) DNA (144-MER) × 1 DNA (145-MER) × 1 Retinoblastoma-binding protein 5 × 1 (Q15291) Ubiquitin × 1 (P62979) WD repeat-containing protein 5 × 1 (P61964) Set1/Ash2 histone methyltransferase complex subunit ASH2 × 1 (Q9UBL3) ZINC ION × 1 Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence
UniProt name KMT2C_HUMAN
Isoform —
PDB entities 7
Chains and sequence ranges Author chain K; PDBConstruct 1–205; UniProt 4707–4911

Retinoblastoma-binding protein 5

Homo sapiens

UniProt Q15291

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein–DNA Heteromer Protein 13 DNA 2 Histone H3 × 2 (A0A310TTQ1) Histone H4 × 2 (P62799) Histone H2A × 2 (Q6AZJ8) Histone H2B 1.1 × 2 (P02281) DNA (144-MER) × 1 DNA (145-MER) × 1 Histone-lysine N-methyltransferase 2C × 1 (Q8NEZ4) Ubiquitin × 1 (P62979) WD repeat-containing protein 5 × 1 (P61964) Set1/Ash2 histone methyltransferase complex subunit ASH2 × 1 (Q9UBL3) ZINC ION × 1 Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence
UniProt name RBBP5_HUMAN
Isoform —
PDB entities 8
Chains and sequence ranges Author chain N; PDBConstruct 1–538; UniProt 1–538

Ubiquitin

Homo sapiens

UniProt P62979

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein–DNA Heteromer Protein 13 DNA 2 Histone H3 × 2 (A0A310TTQ1) Histone H4 × 2 (P62799) Histone H2A × 2 (Q6AZJ8) Histone H2B 1.1 × 2 (P02281) DNA (144-MER) × 1 DNA (145-MER) × 1 Histone-lysine N-methyltransferase 2C × 1 (Q8NEZ4) Retinoblastoma-binding protein 5 × 1 (Q15291) WD repeat-containing protein 5 × 1 (P61964) Set1/Ash2 histone methyltransferase complex subunit ASH2 × 1 (Q9UBL3) ZINC ION × 1 Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence
UniProt name RS27A_HUMAN
Isoform —
PDB entities 9
Chains and sequence ranges Author chain O; PDBConstruct 1–76; UniProt 1–76

WD repeat-containing protein 5

Homo sapiens

UniProt P61964

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein–DNA Heteromer Protein 13 DNA 2 Histone H3 × 2 (A0A310TTQ1) Histone H4 × 2 (P62799) Histone H2A × 2 (Q6AZJ8) Histone H2B 1.1 × 2 (P02281) DNA (144-MER) × 1 DNA (145-MER) × 1 Histone-lysine N-methyltransferase 2C × 1 (Q8NEZ4) Retinoblastoma-binding protein 5 × 1 (Q15291) Ubiquitin × 1 (P62979) Set1/Ash2 histone methyltransferase complex subunit ASH2 × 1 (Q9UBL3) ZINC ION × 1 Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence
UniProt name WDR5_HUMAN
Isoform —
PDB entities 10
Chains and sequence ranges Author chain R; PDBConstruct 1–334; UniProt 1–334

Set1/Ash2 histone methyltransferase complex subunit ASH2

Homo sapiens

UniProt Q9UBL3

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein–DNA Heteromer Protein 13 DNA 2 Histone H3 × 2 (A0A310TTQ1) Histone H4 × 2 (P62799) Histone H2A × 2 (Q6AZJ8) Histone H2B 1.1 × 2 (P02281) DNA (144-MER) × 1 DNA (145-MER) × 1 Histone-lysine N-methyltransferase 2C × 1 (Q8NEZ4) Retinoblastoma-binding protein 5 × 1 (Q15291) Ubiquitin × 1 (P62979) WD repeat-containing protein 5 × 1 (P61964) ZINC ION × 1 Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence
UniProt name ASH2L_HUMAN
Isoform —
PDB entities 11
Chains and sequence ranges Author chain T; PDBConstruct 1–534; UniProt 95–628

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_id6kiw
Deposition date deposition_date2019-07-20
Structure title titleCryo-EM structure of human MLL3-ubNCP complex (4.0 angstrom)
Keywords keywordshistone modification, nucleosome, MLL, TRANSCRIPTION, TRANSCRIPTION-DNA complex; TRANSCRIPTION/DNA
Experimental Method methodELECTRON 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.

6kiw__assembly_1__model_1

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

Download this curve (.dat)

6kiw__assembly_1__model_1 | I(q)

10-2 10-1 106 107 108 109 q (1/Angstrom) I(q)
100 plotted points; both axes use logarithmic scales.

6kiw__assembly_1__model_1 | P(r) · Pending

The new assembly/model P(r) has not been calculated yet This placeholder does not display legacy data r (Angstrom) P(r)
P(r) will be calculated and displayed separately for the same assembly/model.
Rg(Guinier)49.19 Å
Rg (electron density)48.25 Å
Total Rg48.52 Å
Atom count20225
Residues2098
Excluded volume341480 ų
Maximum q0.500 Å⁻¹
Assembly Model Structure unit Oligomeric description Status CRYSOL Actions
1 1 6kiw__assembly_1__model_1 pentadecameric (15) 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 (12)

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6. Fold Classification (SCOP + CATH) 12 domains

CATH v4.4 (12 domains)

Domain ID domain_id6kiwA00
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology20 — Histone, subunit A
Homologous superfamily homologous superfamily10 — Histone, subunit A
Domain ID domain_id6kiwB00
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology20 — Histone, subunit A
Homologous superfamily homologous superfamily10 — Histone, subunit A
Domain ID domain_id6kiwC00
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology20 — Histone, subunit A
Homologous superfamily homologous superfamily10 — Histone, subunit A
Domain ID domain_id6kiwD00
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology20 — Histone, subunit A
Homologous superfamily homologous superfamily10 — Histone, subunit A
Domain ID domain_id6kiwE00
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology20 — Histone, subunit A
Homologous superfamily homologous superfamily10 — Histone, subunit A
Domain ID domain_id6kiwF00
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology20 — Histone, subunit A
Homologous superfamily homologous superfamily10 — Histone, subunit A
Domain ID domain_id6kiwG00
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology20 — Histone, subunit A
Homologous superfamily homologous superfamily10 — Histone, subunit A
Domain ID domain_id6kiwH00
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology20 — Histone, subunit A
Homologous superfamily homologous superfamily10 — Histone, subunit A
Domain ID domain_id6kiwK01
Class class2 — Mainly Beta
Architecture architecture170 — Beta Complex
Topology topology270 — Beta-clip-like
Homologous superfamily homologous superfamily10 — SET domain
Domain ID domain_id6kiwN01
Class class2 — Mainly Beta
Architecture architecture130 — 7 Propeller
Topology topology10 — Methylamine Dehydrogenase; Chain H
Homologous superfamily homologous superfamily10 — YVTN repeat-like/Quinoprotein amine dehydrogenase
Domain ID domain_id6kiwR00
Class class2 — Mainly Beta
Architecture architecture130 — 7 Propeller
Topology topology10 — Methylamine Dehydrogenase; Chain H
Homologous superfamily homologous superfamily10 — YVTN repeat-like/Quinoprotein amine dehydrogenase
Domain ID domain_id6kiwT00
Class class2 — Mainly Beta
Architecture architecture60 — Sandwich
Topology topology120 — Jelly Rolls
Homologous superfamily homologous superfamily920 — SPRY domain
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7. Citations (1)