4YM6

Crystal structure of the human nucleosome containing 6-4PP (outside)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.51 Å
  • R-Value Free: 0.287 
  • R-Value Work: 0.244 
  • R-Value Observed: 0.246 

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Literature

Structural basis of pyrimidine-pyrimidone (6-4) photoproduct recognition by UV-DDB in the nucleosome

Osakabe, A.Tachiwana, H.Kagawa, W.Horikoshi, N.Matsumoto, S.Hasegawa, M.Matsumoto, N.Toga, T.Yamamoto, J.Hanaoka, F.Thoma, N.H.Sugasawa, K.Iwai, S.Kurumizaka, H.

(2015) Sci Rep 5: 16330-16330

  • DOI: 10.1038/srep16330
  • Primary Citation of Related Structures:  
    4YM5, 4YM6

  • PubMed Abstract: 
  • UV-DDB, an initiation factor for the nucleotide excision repair pathway, recognizes 6-4PP lesions through a base flipping mechanism. As genomic DNA is almost entirely accommodated within nucleosomes, the flipping of the 6-4PP bases is supposed to be ...

    UV-DDB, an initiation factor for the nucleotide excision repair pathway, recognizes 6-4PP lesions through a base flipping mechanism. As genomic DNA is almost entirely accommodated within nucleosomes, the flipping of the 6-4PP bases is supposed to be extremely difficult if the lesion occurs in a nucleosome, especially on the strand directly contacting the histone surface. Here we report that UV-DDB binds efficiently to nucleosomal 6-4PPs that are rotationally positioned on the solvent accessible or occluded surface. We determined the crystal structures of nucleosomes containing 6-4PPs in these rotational positions, and found that the 6-4PP DNA regions were flexibly disordered, especially in the strand exposed to the solvent. This characteristic of 6-4PP may facilitate UV-DDB binding to the damaged nucleosome. We present the first atomic-resolution pictures of the detrimental DNA cross-links of neighboring pyrimidine bases within the nucleosome, and provide the mechanistic framework for lesion recognition by UV-DDB in chromatin.


    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 H3.1AE139Homo 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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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Histone H4BF106Homo sapiensMutation(s): 0 
Gene Names: 
Find proteins for P62805 (Homo sapiens)
Explore P62805 
Go to UniProtKB:  P62805
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PHAROS  P62805
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
Histone H2A type 1-B/ECG133Homo sapiensMutation(s): 0 
Gene Names: HIST1H2ABH2AC4H2AFMH2AC8H2AFAHIST1H2AE
Find proteins for P04908 (Homo sapiens)
Explore P04908 
Go to UniProtKB:  P04908
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PHAROS  P04908
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Entity ID: 4
MoleculeChainsSequence LengthOrganismDetailsImage
Histone H2B type 1-JDH129Homo sapiensMutation(s): 0 
Gene Names: HIST1H2BJH2BC11H2BFR
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
145-MER DNAI, J145Homo sapiens
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.51 Å
  • R-Value Free: 0.287 
  • R-Value Work: 0.244 
  • R-Value Observed: 0.246 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 105.713α = 90
b = 109.483β = 90
c = 178.214γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
HKL-2000data collection
HKL-2000data scaling
PHASERphasing
PDB_EXTRACTdata extraction

Structure Validation

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Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Japan Society for the Promotion of ScienceJapan25250023
Ministry of Education, Culture, Sports, Science and TechnologyJapan25131720
Ministry of Education, Culture, Sports, Science and TechnologyJapan25116002

Revision History 

  • Version 1.0: 2015-12-02
    Type: Initial release
  • Version 1.1: 2020-02-05
    Changes: Data collection, Derived calculations