6HTS image
Entry Detail
PDB ID:
6HTS
EMDB ID:
Title:
Cryo-EM structure of the human INO80 complex bound to nucleosome
Biological Source:
Host Organism:
PDB Version:
Deposition Date:
2018-10-04
Release Date:
2018-11-07
Method Details:
Experimental Method:
Resolution:
4.80 Å
Aggregation State:
PARTICLE
Reconstruction Method:
SINGLE PARTICLE
Macromolecular Entities
Polymer Type:polypeptide(L)
Description:RuvB-like 1
Chain IDs:A, C, E
Chain Length:456
Number of Molecules:3
Biological Source:Homo sapiens
Polymer Type:polypeptide(L)
Description:RuvB-like 2
Chain IDs:B, D, F
Chain Length:463
Number of Molecules:3
Biological Source:Homo sapiens
Polymer Type:polypeptide(L)
Description:Chromatin-remodeling ATPase INO80
Chain IDs:G
Chain Length:1290
Number of Molecules:1
Biological Source:Homo sapiens
Polymer Type:polypeptide(L)
Description:Actin-related protein 5
Chain IDs:H
Chain Length:607
Number of Molecules:1
Biological Source:Homo sapiens
Polymer Type:polypeptide(L)
Description:Histone H3.1
Chain IDs:I, M
Chain Length:136
Number of Molecules:2
Biological Source:Homo sapiens
Polymer Type:polypeptide(L)
Description:Histone H4
Chain IDs:J, N
Chain Length:103
Number of Molecules:2
Biological Source:Homo sapiens
Polymer Type:polypeptide(L)
Description:Histone H2A type 1-B/E
Chain IDs:K, O
Chain Length:130
Number of Molecules:2
Biological Source:Homo sapiens
Polymer Type:polypeptide(L)
Description:Histone H2B type 1-J
Chain IDs:L, P
Chain Length:126
Number of Molecules:2
Biological Source:Homo sapiens
Polymer Type:polypeptide(L)
Description:INO80 complex subunit B
Chain IDs:Q (auth: R)
Chain Length:356
Number of Molecules:1
Biological Source:Homo sapiens
Polymer Type:polydeoxyribonucleotide
Description:DNA (150-MER)
Chain IDs:R (auth: X)
Chain Length:228
Number of Molecules:1
Biological Source:synthetic construct
Polymer Type:polydeoxyribonucleotide
Description:DNA (150-MER)
Chain IDs:S (auth: Y)
Chain Length:228
Number of Molecules:1
Biological Source:synthetic construct
Primary Citation
Structure and regulation of the human INO80-nucleosome complex.
Nature 556 391 395 (2018)
PMID: 29643506 DOI: 10.1038/s41586-018-0021-6

Abstact

Access to DNA within nucleosomes is required for a variety of processes in cells including transcription, replication and repair. Consequently, cells encode multiple systems that remodel nucleosomes. These complexes can be simple, involving one or a few protein subunits, or more complicated multi-subunit machines 1 . Biochemical studies2-4 have placed the motor domains of several chromatin remodellers in the superhelical location 2 region of the nucleosome. Structural studies of yeast Chd1 and Snf2-a subunit in the complex with the capacity to remodel the structure of chromatin (RSC)-in complex with nucleosomes5-7 have provided insights into the basic mechanism of nucleosome sliding performed by these complexes. However, how larger, multi-subunit remodelling complexes such as INO80 interact with nucleosomes and how remodellers carry out functions such as nucleosome sliding 8 , histone exchange 9 and nucleosome spacing10-12 remain poorly understood. Although some remodellers work as monomers 13 , others work as highly cooperative dimers11, 14, 15. Here we present the structure of the human INO80 chromatin remodeller with a bound nucleosome, which reveals that INO80 interacts with nucleosomes in a previously undescribed manner: the motor domains are located on the DNA at the entry point to the nucleosome, rather than at superhelical location 2. The ARP5-IES6 module of INO80 makes additional contacts on the opposite side of the nucleosome. This arrangement enables the histone H3 tails of the nucleosome to have a role in the regulation of the activities of the INO80 motor domain-unlike in other characterized remodellers, for which H4 tails have been shown to regulate the motor domains.

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