3WAA

The nucleosome containing human H2A.Z.2


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.20 Å
  • R-Value Free: 0.271 
  • R-Value Work: 0.217 
  • R-Value Observed: 0.220 

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Literature

Structural polymorphism in the L1 loop regions of human H2A.Z.1 and H2A.Z.2

Horikoshi, N.Sato, K.Shimada, K.Arimura, Y.Osakabe, A.Tachiwana, H.Hayashi-Takanaka, Y.Iwasaki, W.Kagawa, W.Harata, M.Kimura, H.Kurumizaka, H.

(2013) Acta Crystallogr D Biol Crystallogr 69: 2431-2439

  • DOI: 10.1107/S090744491302252X
  • Primary Citation of Related Structures:  
    3WA9, 3WAA

  • PubMed Abstract: 
  • The histone H2A.Z variant is widely conserved among eukaryotes. Two isoforms, H2A.Z.1 and H2A.Z.2, have been identified in vertebrates and may have distinct functions in cell growth and gene expression. However, no structural differences between H2A.Z.1 ...

    The histone H2A.Z variant is widely conserved among eukaryotes. Two isoforms, H2A.Z.1 and H2A.Z.2, have been identified in vertebrates and may have distinct functions in cell growth and gene expression. However, no structural differences between H2A.Z.1 and H2A.Z.2 have been reported. In the present study, the crystal structures of nucleosomes containing human H2A.Z.1 and H2A.Z.2 were determined. The structures of the L1 loop regions were found to clearly differ between H2A.Z.1 and H2A.Z.2, although their amino-acid sequences in this region are identical. This structural polymorphism may have been induced by a substitution that evolutionally occurred at the position of amino acid 38 and by the flexible nature of the L1 loops of H2A.Z.1 and H2A.Z.2. It was also found that in living cells nucleosomal H2A.Z.1 exchanges more rapidly than H2A.Z.2. A mutational analysis revealed that the amino-acid difference at position 38 is at least partially responsible for the distinctive dynamics of H2A.Z.1 and H2A.Z.2. These findings provide important new information for understanding the differences in the regulation and functions of H2A.Z.1 and H2A.Z.2 in cells.


    Organizational Affiliation

    Laboratory of Structural Biology, Graduate School of Advanced Science and Engineering, Waseda University, 2-2 Wakamatsu-cho, Shinjuku-ku, Tokyo 162-8480, Japan.



Macromolecules

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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Histone H3.1 AE139Homo sapiensMutation(s): 0 
Gene Names: 
Find proteins for P68431 (Homo sapiens)
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Go to UniProtKB:  P68431
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PHAROS:  P68431
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  • Reference Sequence
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Histone H4 BF106Homo sapiensMutation(s): 0 
Gene Names: 
Find proteins for P62805 (Homo sapiens)
Explore P62805 
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PHAROS:  P62805
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
Histone H2A.V CG131Homo sapiensMutation(s): 0 
Gene Names: H2A.Z.2H2AZ2H2AFVH2AV
Find proteins for Q71UI9 (Homo sapiens)
Explore Q71UI9 
Go to UniProtKB:  Q71UI9
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PHAROS:  Q71UI9
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  • Reference Sequence
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Entity ID: 4
MoleculeChainsSequence LengthOrganismDetailsImage
Histone H2B type 1-J DH129Homo sapiensMutation(s): 0 
Gene Names: H2BH2BC11H2BFRHIST1H2BJ
Find proteins for P06899 (Homo sapiens)
Explore P06899 
Go to UniProtKB:  P06899
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PHAROS:  P06899
Protein Feature View
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  • Reference Sequence
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Entity ID: 5
MoleculeChainsLengthOrganismImage
DNA (146-MER)I, J146N/A
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.20 Å
  • R-Value Free: 0.271 
  • R-Value Work: 0.217 
  • R-Value Observed: 0.220 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 105.359α = 90
b = 109.842β = 90
c = 182.992γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
PDB_EXTRACTdata extraction
BSSdata collection
HKL-2000data reduction
HKL-2000data scaling
PHASERphasing

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2013-12-18
    Type: Initial release