4XBF

Structure of LSD1:CoREST in complex with ssRNA

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.80 Å
  • R-Value Free: 0.227 
  • R-Value Work: 0.201 
  • R-Value Observed: 0.202 

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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: https://doi.org/10.1261/rna.057265.116
  • Primary Citation of Related Structures:  
    4XBF

  • 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 from histone 3 at lysine positions 4 and 9 (H3K4/9) ...

    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

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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Lysine-specific histone demethylase 1AA666Homo sapiensMutation(s): 0 
Gene Names: KDM1A, AOF2, KDM1, KIAA0601, LSD1
EC: 1 (PDB Primary Data), 1.14.99.66 (UniProt)
UniProt & NIH Common Fund Data Resources
Find proteins for O60341 (Homo sapiens)
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Go to UniProtKB:  O60341
PHAROS:  O60341
Entity Groups  
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UniProt GroupO60341
Protein Feature View
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  • Reference Sequence
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
REST corepressor 1B133Homo sapiensMutation(s): 0 
Gene Names: RCOR1, KIAA0071, RCOR
UniProt & NIH Common Fund Data Resources
Find proteins for Q9UKL0 (Homo sapiens)
Explore Q9UKL0 
Go to UniProtKB:  Q9UKL0
PHAROS:  Q9UKL0
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UniProt GroupQ9UKL0
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  • Reference Sequence

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Entity ID: 3
MoleculeChainsLengthOrganismImage
RNA (5'-R(*UP*UP*AP*GP*G)-3')C [auth D]5Homo sapiens
Protein Feature View
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  • Reference Sequence
Small Molecules
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.80 Å
  • R-Value Free: 0.227 
  • R-Value Work: 0.201 
  • R-Value Observed: 0.202 
  • Space Group: I 2 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 121.073α = 90
b = 178.411β = 90
c = 234.676γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
HKL-2000data reduction
Cootmodel building

Structure Validation

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Entry History & Funding Information

Deposition Data

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

Revision History  (Full details and data files)

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