2RHI

Crystal structure of the 3-MBT domain from human L3MBTL1 in complex with H1.5K27me2 at 1.66 angstrom

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.66 Å
  • R-Value Free: 0.201 
  • R-Value Work: 0.187 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history. 

Literature

Structural Basis for Lower Lysine Methylation State-Specific Readout by MBT Repeats of L3MBTL1 and an Engineered PHD Finger.

Li, H., Fischle, W., Wang, W., Duncan, E.M., Liang, L., Murakami-Ishibe, S., Allis, C.D., Patel, D.J.

(2007) Mol.Cell 28: 677-691

  • DOI: 10.1016/j.molcel.2007.10.023
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    • Human L3MBTL1, which contains three malignant brain tumor (MBT) repeats, binds monomethylated and dimethylated lysines, but not trimethylated lysines, in several histone sequence contexts. In crystal structures of L3MBTL1 complexes, the monomethyl- a ...

    Human L3MBTL1, which contains three malignant brain tumor (MBT) repeats, binds monomethylated and dimethylated lysines, but not trimethylated lysines, in several histone sequence contexts. In crystal structures of L3MBTL1 complexes, the monomethyl- and dimethyllysines insert into a narrow and deep cavity of aromatic residue-lined pocket 2, while a proline ring inserts into shallower pocket 1. We have also engineered a single Y to E substitution within the aromatic cage of the BPTF PHD finger, resulting in a reversal of binding preference from trimethyl- to dimethyllysine in an H3K4 sequence context. In both the "cavity insertion" (L3MBTL1) and "surface groove" (PHD finger) modes of methyllysine recognition, a carboxylate group both hydrogen bonds and ion pairs to the methylammonium proton. Our structural and binding studies of these two modules provide insights into the molecular principles governing the decoding of lysine methylation states, thereby highlighting a methylation state-specific layer of histone mark readout impacting on epigenetic regulation.

    Organizational Affiliation: 

    Structural Biology Program, Memorial Sloan-Kettering Cancer Center, New York, NY 10021, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Lethal(3)malignant brain tumor-like protein
A
345Homo sapiensMutation(s): 0 
Gene Names: L3MBTL1 (KIAA0681, L3MBT, L3MBTL)
Find proteins for Q9Y468 (Homo sapiens)
Go to Gene View: L3MBTL1
Go to UniProtKB:  Q9Y468
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Histone H1.5
B
5Homo sapiensMutation(s): 0 
Gene Names: HIST1H1B (H1F5)
Find proteins for P16401 (Homo sapiens)
Go to Gene View: HIST1H1B
Go to UniProtKB:  P16401
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
PG4
Query on PG4
Download SDF File 
Download CCD File 
A
TETRAETHYLENE GLYCOL
C8 H18 O5
UWHCKJMYHZGTIT-UHFFFAOYSA-N
 Ligand Interaction
PEG
Query on PEG
Download SDF File 
Download CCD File 
A
DI(HYDROXYETHYL)ETHER
C4 H10 O3
MTHSVFCYNBDYFN-UHFFFAOYSA-N
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
MLY
Query on MLY
B
L-PEPTIDE LINKINGC8 H18 N2 O2LYS
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.66 Å
  • R-Value Free: 0.201 
  • R-Value Work: 0.187 
  • Space Group: P 21 21 2
Unit Cell:
Length (Å)Angle (°)
a = 85.864α = 90.00
b = 93.318β = 90.00
c = 58.640γ = 90.00
Software Package:
Software NamePurpose
CNSrefinement
ADSCdata collection
HKL-2000data reduction
MOLREPphasing
HKL-2000data scaling

Structure Validation

View Full Validation Report or Ramachandran Plots


View more in-depth experimental data

Entry History 

Deposition Data

  • Deposited Date: 2007-10-09 
  • Released Date: 2007-12-11 
  • Deposition Author(s): Li, H., Patel, D.J.

Revision History 

  • Version 1.0: 2007-12-11
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance