4XBF

Structure of LSD1:CoREST in complex with ssRNA


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.803 Å
  • R-Value Free: 0.227 
  • R-Value Work: 0.201 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

G-quadruplex RNA binding and recognition by the lysine-specific histone demethylase-1 enzyme.

Hirschi, A.Martin, W.J.Luka, Z.Loukachevitch, L.V.Reiter, N.J.

(2016) RNA 22: 1250-1260

  • DOI: 10.1261/rna.057265.116

  • PubMed Abstract: 
  • Lysine-specific histone demethylase 1 (LSD1) is an essential epigenetic regulator in metazoans and requires the co-repressor element-1 silencing transcription factor (CoREST) to efficiently catalyze the removal of mono- and dimethyl functional groups ...

    Lysine-specific histone demethylase 1 (LSD1) is an essential epigenetic regulator in metazoans and requires the co-repressor element-1 silencing transcription factor (CoREST) to efficiently catalyze the removal of mono- and dimethyl functional groups from histone 3 at lysine positions 4 and 9 (H3K4/9). LSD1 interacts with over 60 regulatory proteins and also associates with lncRNAs (TERRA, HOTAIR), suggesting a regulatory role for RNA in LSD1 function. We report that a stacked, intramolecular G-quadruplex (GQ) forming TERRA RNA (GG[UUAGGG]8UUA) binds tightly to the functional LSD1-CoREST complex (Kd ≈ 96 nM), in contrast to a single GQ RNA unit ([UUAGGG]4U), a GQ DNA ([TTAGGG]4T), or an unstructured single-stranded RNA. Stabilization of a parallel-stranded GQ RNA structure by monovalent potassium ions (K(+)) is required for high affinity binding to the LSD1-CoREST complex. These data indicate that LSD1 can distinguish between RNA and DNA as well as structured versus unstructured nucleotide motifs. Further, cross-linking mass spectrometry identified the primary location of GQ RNA binding within the SWIRM/amine oxidase domain (AOD) of LSD1. An ssRNA binding region adjacent to this GQ binding site was also identified via X-ray crystallography. This RNA binding interface is consistent with kinetic assays, demonstrating that a GQ-forming RNA can serve as a noncompetitive inhibitor of LSD1-catalyzed demethylation. The identification of a GQ RNA binding site coupled with kinetic data suggests that structured RNAs can function as regulatory molecules in LSD1-mediated mechanisms.


    Organizational Affiliation

    Department of Biochemistry, Vanderbilt University Medical Center, Nashville, Tennessee 37232-0146, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure


Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Lysine-specific histone demethylase 1A
A
666Homo sapiensMutation(s): 0 
Gene Names: KDM1A (AOF2, KDM1, KIAA0601, LSD1)
EC: 1.-.-.-
Find proteins for O60341 (Homo sapiens)
Go to Gene View: KDM1A
Go to UniProtKB:  O60341
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
REST corepressor 1
B
133Homo sapiensMutation(s): 0 
Gene Names: RCOR1 (KIAA0071, RCOR)
Find proteins for Q9UKL0 (Homo sapiens)
Go to Gene View: RCOR1
Go to UniProtKB:  Q9UKL0
Entity ID: 3
MoleculeChainsLengthOrganism
RNA (5'-R(*UP*UP*AP*GP*G)-3')D5Homo sapiens
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

Download SDF File 
Download CCD File 
A
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
FAD
Query on FAD

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Download CCD File 
A
FLAVIN-ADENINE DINUCLEOTIDE
C27 H33 N9 O15 P2
VWWQXMAJTJZDQX-UYBVJOGSSA-N
 Ligand Interaction
GOL
Query on GOL

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Download CCD File 
A
GLYCEROL
GLYCERIN; PROPANE-1,2,3-TRIOL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.803 Å
  • R-Value Free: 0.227 
  • R-Value Work: 0.201 
  • Space Group: I 2 2 2
Unit Cell:
Length (Å)Angle (°)
a = 121.073α = 90.00
b = 178.411β = 90.00
c = 234.676γ = 90.00
Software Package:
Software NamePurpose
HKL-2000data reduction
PHENIXrefinement
Cootmodel building

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
American Cancer SocietyUnited StatesIRG-58-009-54

Revision History 

  • Version 1.0: 2016-04-27
    Type: Initial release
  • Version 1.1: 2017-05-03
    Type: Data collection, Database references