5DX0

Crystal structure of CARM1, sinefungin, and H3 peptide (R17)

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.05 Å
  • R-Value Free: 0.263 
  • R-Value Work: 0.211 
  • R-Value Observed: 0.214 

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Literature

Structural Insights into Ternary Complex Formation of Human CARM1 with Various Substrates.

Boriack-Sjodin, P.A., Jin, L., Jacques, S.L., Drew, A., Sneeringer, C., Scott, M.P., Moyer, M.P., Ribich, S., Moradei, O., Copeland, R.A.

(2016) ACS Chem Biol 11: 763-771

  • DOI: 10.1021/acschembio.5b00773
  • Primary Citation of Related Structures:  
    5DWQ, 5DX0, 5DX1, 5DX8, 5DXA, 5DXJ

  • PubMed Abstract: 

    • Coactivator-associated arginine methyltransferase 1 (CARM1) is a protein arginine N-methyltransferase (PRMT) enzyme that has been implicated in a variety of cancers. CARM1 is known to methylate histone H3 and nonhistone substrates. To date, several crystal structures of CARM1 have been solved, including structures with small molecule inhibitors, but no ternary structures with nucleoside and peptide substrates have been reported ...

    Coactivator-associated arginine methyltransferase 1 (CARM1) is a protein arginine N-methyltransferase (PRMT) enzyme that has been implicated in a variety of cancers. CARM1 is known to methylate histone H3 and nonhistone substrates. To date, several crystal structures of CARM1 have been solved, including structures with small molecule inhibitors, but no ternary structures with nucleoside and peptide substrates have been reported. Here, the crystal structures of human CARM1 with the S-adenosylmethione (SAM) mimic sinefungin and three different peptide sequences from histone H3 and PABP1 are presented, with both nonmethylated and singly methylated arginine residues exemplified. This is the first example of multiple substrate sequences solved in a single PRMT enzyme and demonstrates how the CARM1 binding site is capable of accommodating a variety of peptide sequences while maintaining a core binding mode for the unmethylated and monomethylated substrates. Comparison of these with other PRMT enzyme-peptide structures shows hydrogen bonding patterns that may be thematic of these binding sites.

    Organizational Affiliation: 

    Epizyme, Inc. 400 Technology Square, Cambridge, Massachusetts 02139, United States.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Histone-arginine methyltransferase CARM1A, B, C, D349Homo sapiensMutation(s): 0 
Gene Names: CARM1, PRMT4
EC: 2.1.1 (PDB Primary Data), 2.1.1.125 (PDB Primary Data), 2.1.1.319 (UniProt)
UniProt & NIH Common Fund Data Resources
Find proteins for Q86X55 (Homo sapiens)
Explore Q86X55 
Go to UniProtKB:  Q86X55
PHAROS:  Q86X55
GTEx:  ENSG00000142453 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ86X55
Protein Feature View
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  • Reference Sequence

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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
H3 peptideE [auth F],
F [auth G],
G [auth H],
H [auth I]		20Homo sapiensMutation(s): 2 
Gene Names: H3-3A, H3.3A, H3F3, H3F3A, PP781, H3-3B, H3.3B, H3F3B
UniProt & NIH Common Fund Data Resources
Find proteins for P84243 (Homo sapiens)
Explore P84243 
Go to UniProtKB:  P84243
PHAROS:  P84243
GTEx:  ENSG00000163041 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP84243
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.05 Å
  • R-Value Free: 0.263 
  • R-Value Work: 0.211 
  • R-Value Observed: 0.214 
  • Space Group: P 21 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 75.722α = 90
b = 98.847β = 90
c = 208.67γ = 90
Software Package:
Software NamePurpose
HKL-2000data reduction
SCALEPACKdata scaling
REFMACrefinement
PDB_EXTRACTdata extraction

Structure Validation

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Entry History 

Deposition Data

  • Deposited Date: 2015-09-23 
  • Released Date: 2015-11-25 
    • Deposition Author(s): Boriack-Sjodin, P.A.

Revision History  (Full details and data files)

  • Version 1.0: 2015-11-25
    Type: Initial release
  • Version 1.1: 2016-03-30
    Changes: Database references