1FS1

INSIGHTS INTO SCF UBIQUITIN LIGASES FROM THE STRUCTURE OF THE SKP1-SKP2 COMPLEX


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.8 Å
  • R-Value Free: 0.274 
  • R-Value Work: 0.218 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Insights into SCF ubiquitin ligases from the structure of the Skp1-Skp2 complex.

Schulman, B.A.Carrano, A.C.Jeffrey, P.D.Bowen, Z.Kinnucan, E.R.Finnin, M.S.Elledge, S.J.Harper, J.W.Pagano, M.Pavletich, N.P.

(2000) Nature 408: 381-386

  • DOI: 10.1038/35042620
  • Primary Citation of Related Structures:  1FQV, 1FS2

  • PubMed Abstract: 
  • F-box proteins are members of a large family that regulates the cell cycle, the immune response, signalling cascades and developmental programmes by targeting proteins, such as cyclins, cyclin-dependent kinase inhibitors, IkappaBalpha and beta-cateni ...

    F-box proteins are members of a large family that regulates the cell cycle, the immune response, signalling cascades and developmental programmes by targeting proteins, such as cyclins, cyclin-dependent kinase inhibitors, IkappaBalpha and beta-catenin, for ubiquitination (reviewed in refs 1-3). F-box proteins are the substrate-recognition components of SCF (Skp1-Cullin-F-box protein) ubiquitin-protein ligases. They bind the SCF constant catalytic core by means of the F-box motif interacting with Skp1, and they bind substrates through their variable protein-protein interaction domains. The large number of F-box proteins is thought to allow ubiquitination of numerous, diverse substrates. Most organisms have several Skp1 family members, but the function of these Skp1 homologues and the rules of recognition between different F-box and Skp1 proteins remain unknown. Here we describe the crystal structure of the human F-box protein Skp2 bound to Skp1. Skp1 recruits the F-box protein through a bipartite interface involving both the F-box and the substrate-recognition domain. The structure raises the possibility that different Skp1 family members evolved to function with different subsets of F-box proteins, and suggests that the F-box protein may not only recruit substrate, but may also position it optimally for the ubiquitination reaction.


    Organizational Affiliation

    Cellular Biochemistry and Biophysics Program, Medical Institute, Memorial Sloan-Kettering Cancer Center, New York, New York 10021, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
CYCLIN A/CDK2-ASSOCIATED P19
A, C
53Homo sapiensGene Names: SKP2 (FBXL1)
Find proteins for Q13309 (Homo sapiens)
Go to Gene View: SKP2
Go to UniProtKB:  Q13309
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
CYCLIN A/CDK2-ASSOCIATED P45
B, D
141Homo sapiensGene Names: SKP1 (EMC19, OCP2, SKP1A, TCEB1L)
Find proteins for P63208 (Homo sapiens)
Go to Gene View: SKP1
Go to UniProtKB:  P63208
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.8 Å
  • R-Value Free: 0.274 
  • R-Value Work: 0.218 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 46.540α = 90.00
b = 41.600β = 93.42
c = 87.230γ = 90.00
Software Package:
Software NamePurpose
MLPHAREphasing
CNSrefinement
DENZOdata reduction
SCALEPACKdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2000-11-29
    Type: Initial release
  • Version 1.1: 2008-04-27
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance