2HIO

HISTONE OCTAMER (CHICKEN), CHROMOSOMAL PROTEIN


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.10 Å
  • R-Value Observed: 0.255 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

The nucleosomal core histone octamer at 3.1 A resolution: a tripartite protein assembly and a left-handed superhelix.

Arents, G.Burlingame, R.W.Wang, B.C.Love, W.E.Moudrianakis, E.N.

(1991) Proc Natl Acad Sci U S A 88: 10148-10152

  • DOI: https://doi.org/10.1073/pnas.88.22.10148
  • Primary Citation of Related Structures:  
    1HIO, 2HIO

  • PubMed Abstract: 

    The structure of the octameric histone core of the nucleosome has been determined by x-ray crystallography to a resolution of 3.1 A. The histone octamer is a tripartite assembly in which a centrally located (H3-H4)2 tetramer is flanked by two H2A-H2B dimers. It has a complex outer surface; depending on the perspective, the structure appears as a wedge or as a flat disk. The disk represents the planar projection of a left-handed proteinaceous superhelix with approximately 28 A pitch. The diameter of the particle is 65 A and the length is 60 A at its maximum and approximately 10 A at its minimum extension; these dimensions are in agreement with those reported earlier by Klug et al. [Klug, A., Rhodes, D., Smith, J., Finch, J. T. & Thomas, J. O. (1980) Nature (London) 287, 509-516]. The folded histone chains are elongated rather than globular and are assembled in a characteristic "handshake" motif. The individual polypeptides share a common central structural element of the helix-loop-helix type, which we name the histone fold.


  • Organizational Affiliation

    Department of Biology, Johns Hopkins University, Baltimore, MD 21218.


Macromolecules
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Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
PROTEIN (HISTONE H2A)128Gallus gallusMutation(s): 0 
UniProt
Find proteins for P02263 (Gallus gallus)
Explore P02263 
Go to UniProtKB:  P02263
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UniProt GroupP02263
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  • Reference Sequence
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Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
PROTEIN (HISTONE H2B)125Gallus gallusMutation(s): 0 
UniProt
Find proteins for P0C1H5 (Gallus gallus)
Explore P0C1H5 
Go to UniProtKB:  P0C1H5
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UniProt GroupP0C1H5
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  • Reference Sequence
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Entity ID: 3
MoleculeChains Sequence LengthOrganismDetailsImage
PROTEIN (HISTONE H3)136Gallus gallusMutation(s): 0 
UniProt
Find proteins for P84229 (Gallus gallus)
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Go to UniProtKB:  P84229
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UniProt GroupP84229
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  • Reference Sequence
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Entity ID: 4
MoleculeChains Sequence LengthOrganismDetailsImage
PROTEIN (HISTONE H4)103Gallus gallusMutation(s): 0 
UniProt
Find proteins for P62801 (Gallus gallus)
Explore P62801 
Go to UniProtKB:  P62801
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UniProt GroupP62801
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.10 Å
  • R-Value Observed: 0.255 
  • Space Group: P 32 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 118.82α = 90
b = 118.82β = 90
c = 102.93γ = 120
Software Package:
Software NamePurpose
PROFFTrefinement

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2000-01-12
    Type: Initial release
  • Version 1.1: 2008-04-26
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Derived calculations, Version format compliance
  • Version 1.3: 2023-12-27
    Changes: Data collection, Database references