5BNB

Crystal structure of a Ube2S-ubiquitin conjugate

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.49 Å
  • R-Value Free: 0.304 
  • R-Value Work: 0.243 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history. 

Literature

Crystal Structure of a Ube2S-Ubiquitin Conjugate.

Lorenz, S., Bhattacharyya, M., Feiler, C., Rape, M., Kuriyan, J.

(2016) Plos One 11: e0147550-e0147550

  • DOI: 10.1371/journal.pone.0147550

  • PubMed Abstract: 

    • Protein ubiquitination occurs through the sequential formation and reorganization of specific protein-protein interfaces. Ubiquitin-conjugating (E2) enzymes, such as Ube2S, catalyze the formation of an isopeptide linkage between the C-terminus of a " ...

    Protein ubiquitination occurs through the sequential formation and reorganization of specific protein-protein interfaces. Ubiquitin-conjugating (E2) enzymes, such as Ube2S, catalyze the formation of an isopeptide linkage between the C-terminus of a "donor" ubiquitin and a primary amino group of an "acceptor" ubiquitin molecule. This reaction involves an intermediate, in which the C-terminus of the donor ubiquitin is thioester-bound to the active site cysteine of the E2 and a functionally important interface is formed between the two proteins. A docked model of a Ube2S-donor ubiquitin complex was generated previously, based on chemical shift mapping by NMR, and predicted contacts were validated in functional studies. We now present the crystal structure of a covalent Ube2S-ubiquitin complex. The structure contains an interface between Ube2S and ubiquitin in trans that resembles the earlier model in general terms, but differs in detail. The crystallographic interface is more hydrophobic than the earlier model and is stable in molecular dynamics (MD) simulations. Remarkably, the docked Ube2S-donor complex converges readily to the configuration seen in the crystal structure in 3 out of 8 MD trajectories. Since the crystallographic interface is fully consistent with mutational effects, this indicates that the structure provides an energetically favorable representation of the functionally critical Ube2S-donor interface.

    Organizational Affiliation: 

    California Institute for Quantitative Biosciences, University of California, Berkeley, California, United States of America.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Ubiquitin-conjugating enzyme E2 S
A, B, C, D
156Homo sapiensMutation(s): 1 
Gene Names: UBE2S (E2EPF)
EC: 2.3.2.23
Find proteins for Q16763 (Homo sapiens)
Go to Gene View: UBE2S
Go to UniProtKB:  Q16763
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Polyubiquitin-B
E, F, G, I
76Homo sapiensMutation(s): 1 
Gene Names: UBB
Find proteins for P0CG47 (Homo sapiens)
Go to Gene View: UBB
Go to UniProtKB:  P0CG47
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.49 Å
  • R-Value Free: 0.304 
  • R-Value Work: 0.243 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 94.906α = 90.00
b = 45.854β = 93.14
c = 110.576γ = 90.00
Software Package:
Software NamePurpose
PHENIXrefinement
Aimlessdata scaling
XDSdata reduction
PHASERphasing

Structure Validation

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Entry History & Funding Information

Deposition Data

Funding OrganizationLocationGrant Number
The Leukemia and Lymphoma SocietyUnited States5509-11
German Research FoundationGermanyLO 2003/1-1

Revision History 

  • Version 1.0: 2016-02-17
    Type: Initial release
  • Version 1.1: 2017-09-06
    Type: Author supporting evidence