7K5Y

Cryo-EM structure of a chromatosome containing human linker histone H1.4


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 2.76 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

Distinct Structures and Dynamics of Chromatosomes with Different Human Linker Histone Isoforms.

Zhou, B.R.Feng, H.Kale, S.Fox, T.Khant, H.de Val, N.Ghirlando, R.Panchenko, A.R.Bai, Y.

(2021) Mol Cell 81: 166-182.e6

  • DOI: https://doi.org/10.1016/j.molcel.2020.10.038
  • Primary Citation of Related Structures:  
    7K5X, 7K5Y, 7K60, 7K61, 7K63

  • PubMed Abstract: 

    The repeating structural unit of metazoan chromatin is the chromatosome, a nucleosome bound to a linker histone, H1. There are 11 human H1 isoforms with diverse cellular functions, but how they interact with the nucleosome remains elusive. Here, we determined the cryoelectron microscopy (cryo-EM) structures of chromatosomes containing 197 bp DNA and three different human H1 isoforms, respectively. The globular domains of all three H1 isoforms bound to the nucleosome dyad. However, the flanking/linker DNAs displayed substantial distinct dynamic conformations. Nuclear magnetic resonance (NMR) and H1 tail-swapping cryo-EM experiments revealed that the C-terminal tails of the H1 isoforms mainly controlled the flanking DNA orientations. We also observed partial ordering of the core histone H2A C-terminal and H3 N-terminal tails in the chromatosomes. Our results provide insights into the structures and dynamics of the chromatosomes and have implications for the structure and function of chromatin.


  • Organizational Affiliation

    Laboratory of Biochemistry and Molecular Biology, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA.


Macromolecules

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Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Histone H3.1
A, E
136Homo sapiensMutation(s): 0 
Gene Names: 
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Find proteins for P68431 (Homo sapiens)
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PHAROS:  P68431
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UniProt GroupP68431
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  • Reference Sequence
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Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
Histone H4
B, F
103Homo sapiensMutation(s): 0 
Gene Names: 
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Find proteins for P62805 (Homo sapiens)
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UniProt GroupP62805
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Entity ID: 3
MoleculeChains Sequence LengthOrganismDetailsImage
Histone H2A type 1-B/E
C, G
130Homo sapiensMutation(s): 0 
Gene Names: HIST1H2ABH2AFMHIST1H2AEH2AFA
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Find proteins for P04908 (Homo sapiens)
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Entity ID: 4
MoleculeChains Sequence LengthOrganismDetailsImage
Histone H2B type 1-J
D, H
126Homo sapiensMutation(s): 0 
Gene Names: HIST1H2BJH2BFR
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GTEx:  ENSG00000124635 
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Entity ID: 7
MoleculeChains Sequence LengthOrganismDetailsImage
scFv20K [auth M],
L [auth N]
270Mus musculusMutation(s): 0 
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Entity ID: 8
MoleculeChains Sequence LengthOrganismDetailsImage
Histone H1.4M [auth U]219Homo sapiensMutation(s): 0 
Gene Names: H1-4H1F4HIST1H1E
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GTEx:  ENSG00000168298 
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Entity ID: 5
MoleculeChains LengthOrganismImage
DNA (197-MER)197Homo sapiens
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Entity ID: 6
MoleculeChains LengthOrganismImage
DNA (197-MER)197Homo sapiens
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Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 2.76 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 
EM Software:
TaskSoftware PackageVersion
RECONSTRUCTIONcryoSPARC2

Structure Validation

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Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Cancer Institute (NIH/NCI)United StatesIntramural Research Program

Revision History  (Full details and data files)

  • Version 1.0: 2020-11-25
    Type: Initial release
  • Version 1.1: 2020-12-09
    Changes: Database references
  • Version 1.2: 2021-01-20
    Changes: Database references
  • Version 1.3: 2024-03-06
    Changes: Data collection, Database references