6NYO

Crystal structure of a human Cdc34-ubiquitin thioester mimetic


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.502 Å
  • R-Value Free: 0.202 
  • R-Value Work: 0.175 

wwPDB Validation 3D Report Full Report


This is version 1.0 of the entry. See complete history

Literature

Structural insights into E1 recognition and the ubiquitin-conjugating activity of the E2 enzyme Cdc34.

Williams, K.M.Qie, S.Atkison, J.H.Salazar-Arango, S.Alan Diehl, J.Olsen, S.K.

(2019) Nat Commun 10: 3296-3296

  • DOI: 10.1038/s41467-019-11061-8
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Ubiquitin (Ub) signaling requires the sequential interactions and activities of three enzymes, E1, E2, and E3. Cdc34 is an E2 that plays a key role in regulating cell cycle progression and requires unique structural elements to function. The molecula ...

    Ubiquitin (Ub) signaling requires the sequential interactions and activities of three enzymes, E1, E2, and E3. Cdc34 is an E2 that plays a key role in regulating cell cycle progression and requires unique structural elements to function. The molecular basis by which Cdc34 engages its E1 and the structural mechanisms by which its unique C-terminal extension functions in Cdc34 activity are unknown. Here, we present crystal structures of Cdc34 alone and in complex with E1, and a Cdc34~Ub thioester mimetic that represents the product of Uba1-Cdc34 Ub transthiolation. These structures reveal conformational changes in Uba1 and Cdc34 and a unique binding mode that are required for transthiolation. The Cdc34~Ub structure reveals contacts between the Cdc34 C-terminal extension and Ub that stabilize Cdc34~Ub in a closed conformation and are critical for Ub discharge. Altogether, our structural, biochemical, and cell-based studies provide insights into the molecular mechanisms by which Cdc34 function in cells.


    Organizational Affiliation

    Department of Biochemistry & Molecular Biology and Hollings Cancer Center, Medical University of South Carolina, Charleston, SC, 29425, USA.,Department of Biochemistry & Molecular Biology and Hollings Cancer Center, Medical University of South Carolina, Charleston, SC, 29425, USA. olsensk@musc.edu.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Ubiquitin-conjugating enzyme E2 R2
A
204Homo sapiensMutation(s): 1 
Gene Names: UBE2R2 (CDC34B, UBC3B)
EC: 2.3.2.23
Find proteins for Q712K3 (Homo sapiens)
Go to Gene View: UBE2R2
Go to UniProtKB:  Q712K3
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Ubiquitin
E
96N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
PO4
Query on PO4

Download SDF File 
Download CCD File 
A
PHOSPHATE ION
O4 P
NBIIXXVUZAFLBC-UHFFFAOYSA-K
 Ligand Interaction
EDO
Query on EDO

Download SDF File 
Download CCD File 
A, E
1,2-ETHANEDIOL
ETHYLENE GLYCOL
C2 H6 O2
LYCAIKOWRPUZTN-UHFFFAOYSA-N
 Ligand Interaction
U94
Query on U94

Download SDF File 
Download CCD File 
A
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
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.502 Å
  • R-Value Free: 0.202 
  • R-Value Work: 0.175 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 44.585α = 90.00
b = 55.737β = 90.00
c = 119.785γ = 90.00
Software Package:
Software NamePurpose
PHENIXrefinement
PHASERphasing
SCALEPACKdata scaling
HKL-2000data reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute of General Medical SciencesUnited StatesGM115568

Revision History 

  • Version 1.0: 2019-08-07
    Type: Initial release