1U6G

Crystal Structure of The Cand1-Cul1-Roc1 Complex


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.1 Å
  • R-Value Free: 0.317 
  • R-Value Work: 0.243 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structure of the Cand1-Cul1-Roc1 complex reveals regulatory mechanisms for the assembly of the multisubunit cullin-dependent ubiquitin ligases

Goldenberg, S.J.Cascio, T.C.Shumway, S.D.Garbutt, K.C.Liu, J.Xiong, Y.Zheng, N.

(2004) Cell 119: 517-528

  • DOI: 10.1016/j.cell.2004.10.019

  • PubMed Abstract: 
  • The SCF ubiquitin ligase complex regulates diverse cellular functions by ubiquitinating numerous protein substrates. Cand1, a 120 kDa HEAT repeat protein, forms a tight complex with the Cul1-Roc1 SCF catalytic core, inhibiting the assembly of the mul ...

    The SCF ubiquitin ligase complex regulates diverse cellular functions by ubiquitinating numerous protein substrates. Cand1, a 120 kDa HEAT repeat protein, forms a tight complex with the Cul1-Roc1 SCF catalytic core, inhibiting the assembly of the multisubunit E3 complex. The crystal structure of the Cand1-Cul1-Roc1 complex shows that Cand1 adopts a highly sinuous superhelical structure, clamping around the elongated SCF scaffold protein Cul1. At one end, a Cand1 beta hairpin protrusion partially occupies the adaptor binding site on Cul1, inhibiting its interactions with the Skp1 adaptor and the substrate-recruiting F box protein subunits. At the other end, two Cand1 HEAT repeats pack against a conserved Cul1 surface cleft and bury a Cul1 lysine residue, whose modification by the ubiquitin-like protein, Nedd8, is able to block Cand1-Cul1 association. Together with biochemical evidence, these structural results elucidate the mechanisms by which Cand1 and Nedd8 regulate the assembly-disassembly cycles of SCF and other cullin-dependent E3 complexes.


    Organizational Affiliation

    Department of Pharmacology, Box 357280, University of Washington, Seattle, WA 98195, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Cullin homolog 1
A
776Homo sapiensGene Names: CUL1
Find proteins for Q13616 (Homo sapiens)
Go to Gene View: CUL1
Go to UniProtKB:  Q13616
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
RING-box protein 1
B
108Homo sapiensGene Names: RBX1 (RNF75, ROC1)
EC: 6.3.2.-
Find proteins for P62877 (Homo sapiens)
Go to Gene View: RBX1
Go to UniProtKB:  P62877
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
TIP120 protein
C
1230Homo sapiensGene Names: CAND1 (KIAA0829, TIP120, TIP120A)
Find proteins for Q86VP6 (Homo sapiens)
Go to Gene View: CAND1
Go to UniProtKB:  Q86VP6
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ZN
Query on ZN

Download SDF File 
Download CCD File 
B
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.1 Å
  • R-Value Free: 0.317 
  • R-Value Work: 0.243 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 108.466α = 90.00
b = 151.327β = 90.00
c = 215.892γ = 90.00
Software Package:
Software NamePurpose
SCALEPACKdata scaling
CNSrefinement
HKL-2000data collection
AMoREphasing
HKL-2000data reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2004-12-14
    Type: Initial release
  • Version 1.1: 2008-04-30
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance