3RZ3

Human Cdc34 E2 in complex with CC0651 inhibitor


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.3 Å
  • R-Value Free: 0.258 
  • R-Value Work: 0.221 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

An allosteric inhibitor of the human cdc34 ubiquitin conjugating enzyme

Ceccarelli, D.F.Tang, X.Pelletier, B.Orlicky, S.Xie, W.Plantevin, V.Neculai, D.Chou, Y.C.Ogunjimi, A.Al-Hakim, A.Varelas, X.Koszela, J.Wasney, G.A.Vedadi, M.Dhe-Paganon, S.Cox, S.Xu, S.Lopez-Girona, A.Mercurio, F.Wrana, J.Durocher, D.Meloche, S.Webb, D.R.Tyers, M.Sicheri, F.

(2011) Cell 145: 1075-1087

  • DOI: 10.1016/j.cell.2011.05.039

  • PubMed Abstract: 
  • In the ubiquitin-proteasome system (UPS), E2 enzymes mediate the conjugation of ubiquitin to substrates and thereby control protein stability and interactions. The E2 enzyme hCdc34 catalyzes the ubiquitination of hundreds of proteins in conjunction w ...

    In the ubiquitin-proteasome system (UPS), E2 enzymes mediate the conjugation of ubiquitin to substrates and thereby control protein stability and interactions. The E2 enzyme hCdc34 catalyzes the ubiquitination of hundreds of proteins in conjunction with the cullin-RING (CRL) superfamily of E3 enzymes. We identified a small molecule termed CC0651 that selectively inhibits hCdc34. Structure determination revealed that CC0651 inserts into a cryptic binding pocket on hCdc34 distant from the catalytic site, causing subtle but wholesale displacement of E2 secondary structural elements. CC0651 analogs inhibited proliferation of human cancer cell lines and caused accumulation of the SCF(Skp2) substrate p27(Kip1). CC0651 does not affect hCdc34 interactions with E1 or E3 enzymes or the formation of the ubiquitin thioester but instead interferes with the discharge of ubiquitin to acceptor lysine residues. E2 enzymes are thus susceptible to noncatalytic site inhibition and may represent a viable class of drug target in the UPS.


    Organizational Affiliation

    Center for Systems Biology, Samuel Lunenfeld Research Institute, Mount Sinai Hospital, Toronto, Ontario M5G1X5, Canada.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Ubiquitin-conjugating enzyme E2 R1
A, B, C, D
183Homo sapiensMutation(s): 0 
Gene Names: CDC34 (UBCH3, UBE2R1)
EC: 2.3.2.23
Find proteins for P49427 (Homo sapiens)
Go to Gene View: CDC34
Go to UniProtKB:  P49427
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
U94
Query on U94

Download SDF File 
Download CCD File 
A, B, C, D
4,5-dideoxy-5-(3',5'-dichlorobiphenyl-4-yl)-4-[(methoxyacetyl)amino]-L-arabinonic acid
C20 H21 Cl2 N O6
NTCBTNCWNRCBGX-YTQUADARSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
U94IC50: 1720 nM BINDINGMOAD
U94IC50: 1720 nM PDBBIND
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.3 Å
  • R-Value Free: 0.258 
  • R-Value Work: 0.221 
  • Space Group: F 2 2 2
Unit Cell:
Length (Å)Angle (°)
a = 121.797α = 90.00
b = 139.525β = 90.00
c = 216.059γ = 90.00
Software Package:
Software NamePurpose
SCALEPACKdata scaling
AMoREphasing
REFMACrefinement
HKL-2000data reduction
ADSCdata collection

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2011-07-06
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance