3A6N

The nucleosome containing a testis-specific histone variant, human H3T


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.7 Å
  • R-Value Free: 0.264 
  • R-Value Work: 0.228 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structural basis of instability of the nucleosome containing a testis-specific histone variant, human H3T

Tachiwana, H.Kagawa, W.Osakabe, A.Kawaguchi, K.Shiga, T.Hayashi-Takanaka, Y.Kimura, H.Kurumizaka, H.

(2010) Proc.Natl.Acad.Sci.USA 107: 10454-10459

  • DOI: 10.1073/pnas.1003064107
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • A histone H3 variant, H3T, is highly expressed in the testis, suggesting that it may play an important role in the chromatin reorganization required for meiosis and/or spermatogenesis. In the present study, we found that the nucleosome containing hum ...

    A histone H3 variant, H3T, is highly expressed in the testis, suggesting that it may play an important role in the chromatin reorganization required for meiosis and/or spermatogenesis. In the present study, we found that the nucleosome containing human H3T is significantly unstable both in vitro and in vivo, as compared to the conventional nucleosome containing H3.1. The crystal structure of the H3T nucleosome revealed structural differences in the H3T regions on both ends of the central alpha2 helix, as compared to those of H3.1. The H3T-specific residues (Met71 and Val111) are the source of the structural differences observed between H3T and H3.1. A mutational analysis revealed that these residues are responsible for the reduced stability of the H3T-containing nucleosome. These physical and structural properties of the H3T-containing nucleosome may provide the basis of chromatin reorganization during spermatogenesis.


    Organizational Affiliation

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




Macromolecules

Find similar proteins by: Sequence  |  Structure


Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Histone H3.1t
A, E
139Homo sapiensMutation(s): 0 
Gene Names: HIST3H3 (H3FT)
Find proteins for Q16695 (Homo sapiens)
Go to Gene View: HIST3H3
Go to UniProtKB:  Q16695
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Histone H4
B, F
106Homo sapiensMutation(s): 0 
Gene Names: HIST1H4A, HIST1H4B, HIST1H4C, HIST1H4D, HIST1H4E, HIST1H4F, HIST1H4H, HIST1H4I, HIST1H4J, HIST1H4K, HIST1H4L, HIST2H4A, HIST2H4B, HIST4H4 (H4/A, H4FA, H4/I, H4FI, H4/G, H4FG, H4/B, H4FB, H4/J, H4FJ, H4/C, H4FC, H4/H, H4FH, H4/M, H4FM, H4/E, H4FE, H4/D, H4FD, H4/K, H4FK, H4/N, H4F2, H4FN, HIST2H4, H4/O, H4FO)
Find proteins for P62805 (Homo sapiens)
Go to UniProtKB:  P62805
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
Histone H2A type 1-B/E
C, G
133Homo sapiensMutation(s): 0 
Gene Names: HIST1H2AB, HIST1H2AE (H2AFM, H2AFA)
Find proteins for P04908 (Homo sapiens)
Go to Gene View: HIST1H2AB HIST1H2AE
Go to UniProtKB:  P04908
Entity ID: 4
MoleculeChainsSequence LengthOrganismDetails
Histone H2B type 1-J
D, H
129Homo sapiensMutation(s): 0 
Gene Names: HIST1H2BJ (H2BFR)
Find proteins for P06899 (Homo sapiens)
Go to Gene View: HIST1H2BJ
Go to UniProtKB:  P06899
Entity ID: 5
MoleculeChainsLengthOrganism
146-MER DNAI,J146N/A
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
MN
Query on MN

Download SDF File 
Download CCD File 
D, I, J
MANGANESE (II) ION
Mn
WAEMQWOKJMHJLA-UHFFFAOYSA-N
 Ligand Interaction
CL
Query on CL

Download SDF File 
Download CCD File 
A, C, E, G
CHLORIDE ION
Cl
VEXZGXHMUGYJMC-UHFFFAOYSA-M
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.7 Å
  • R-Value Free: 0.264 
  • R-Value Work: 0.228 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 105.476α = 90.00
b = 109.521β = 90.00
c = 181.052γ = 90.00
Software Package:
Software NamePurpose
BSSdata collection
CNSrefinement
HKL-2000data reduction
MOLREPphasing
HKL-2000data scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2010-05-26
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance
  • Version 1.2: 2012-07-18
    Type: Structure summary