5WVO

Crystal structure of DNMT1 RFTS domain in complex with K18/K23 mono-ubiquitylated histone H3


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.997 Å
  • R-Value Free: 0.239 
  • R-Value Work: 0.196 

wwPDB Validation 3D Report Full Report


This is version 1.0 of the entry. See complete history

Literature

Structure of the Dnmt1 Reader Module Complexed with a Unique Two-Mono-Ubiquitin Mark on Histone H3 Reveals the Basis for DNA Methylation Maintenance

Ishiyama, S.Nishiyama, A.Saeki, Y.Moritsugu, K.Morimoto, D.Yamaguchi, L.Arai, N.Matsumura, R.Kawakami, T.Mishima, Y.Hojo, H.Shimamura, S.Ishikawa, F.Tajima, S.Tanaka, K.Ariyoshi, M.Shirakawa, M.Ikeguchi, M.Kidera, A.Suetake, I.Arita, K.Nakanishi, M.

(2017) Mol. Cell 68: 350-360.e7

  • DOI: 10.1016/j.molcel.2017.09.037

  • PubMed Abstract: 
  • The proper location and timing of Dnmt1 activation are essential for DNA methylation maintenance. We demonstrate here that Dnmt1 utilizes two-mono-ubiquitylated histone H3 as a unique ubiquitin mark for its recruitment to and activation at DNA methyl ...

    The proper location and timing of Dnmt1 activation are essential for DNA methylation maintenance. We demonstrate here that Dnmt1 utilizes two-mono-ubiquitylated histone H3 as a unique ubiquitin mark for its recruitment to and activation at DNA methylation sites. The crystal structure of the replication foci targeting sequence (RFTS) of Dnmt1 in complex with H3-K18Ub/23Ub reveals striking differences to the known ubiquitin-recognition structures. The two ubiquitins are simultaneously bound to the RFTS with a combination of canonical hydrophobic and atypical hydrophilic interactions. The C-lobe of RFTS, together with the K23Ub surface, also recognizes the N-terminal tail of H3. The binding of H3-K18Ub/23Ub results in spatial rearrangement of two lobes in the RFTS, suggesting the opening of its active site. Actually, incubation of Dnmt1 with H3-K18Ub/23Ub increases its catalytic activity in vitro. Our results therefore shed light on the essential role of a unique ubiquitin-binding module in DNA methylation maintenance.


    Organizational Affiliation

    Structure Biology Laboratory, Graduate School of Medical Life Science, Yokohama City University, 1-7-29, Suehiro-cho, Tsurumi-ku, Yokohama, Kanagawa 230-0045, Japan.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Ubiquitin
A, B
76Homo sapiensMutation(s): 1 
Gene Names: RPS27A (UBA80, UBCEP1)
Find proteins for P62979 (Homo sapiens)
Go to Gene View: RPS27A
Go to UniProtKB:  P62979
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
DNA (cytosine-5)-methyltransferase 1
C
250Homo sapiensMutation(s): 0 
Gene Names: DNMT1 (AIM, CXXC9, DNMT)
EC: 2.1.1.37
Find proteins for P26358 (Homo sapiens)
Go to Gene View: DNMT1
Go to UniProtKB:  P26358
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
Histone H3.1
D
37Homo sapiensMutation(s): 2 
Gene Names: H3C1, H3C2, H3C3, H3C4, H3C6, H3C7, H3C8, H3C10, H3C11, H3C12 (H3FA, HIST1H3A, H3FL, HIST1H3B, H3FC HIST1H3C, H3FB, HIST1H3D, H3FD, HIST1H3E, H3FI, HIST1H3F, H3FH, HIST1H3G, H3FK, HIST1H3H, H3FF, HIST1H3I, H3FJ, HIST1H3J)
Find proteins for P68431 (Homo sapiens)
Go to UniProtKB:  P68431
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ZN
Query on ZN

Download SDF File 
Download CCD File 
C
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.997 Å
  • R-Value Free: 0.239 
  • R-Value Work: 0.196 
  • Space Group: C 2 2 21
Unit Cell:
Length (Å)Angle (°)
a = 68.362α = 90.00
b = 198.779β = 90.00
c = 76.904γ = 90.00
Software Package:
Software NamePurpose
HKL-2000data scaling
PHENIXrefinement
HKL-2000data reduction
PHASERphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
JST PRESTOJapan--

Revision History 

  • Version 1.0: 2017-11-15
    Type: Initial release