1FQV

Insights into scf ubiquitin ligases from the structure of the skp1-skp2 complex

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.80 Å
  • R-Value Free: 0.314 
  • R-Value Work: 0.275 

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, 1FS1, 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-catenin, for ubiquitination (reviewed in refs 1-3) ...

    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: 
(by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
SKP2
A, C, E, G, I, K, M, O
A, C, E, G, I, K, M, O
336Homo sapiensMutation(s): 0 
Gene Names: SKP2, FBXL1
UniProt & NIH Common Fund Data Resources
Find proteins for Q13309 (Homo sapiens)
Explore Q13309 
Go to UniProtKB:  Q13309
PHAROS:  Q13309
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ13309
Protein Feature View
Expand
  • Reference Sequence
Find similar proteins by: 
(by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
SKP1
B, D, F, H, J, L, N, P
B, D, F, H, J, L, N, P
149Homo sapiensMutation(s): 0 
Gene Names: SKP1, EMC19, OCP2, SKP1A, TCEB1L
UniProt & NIH Common Fund Data Resources
Find proteins for P63208 (Homo sapiens)
Explore P63208 
Go to UniProtKB:  P63208
PHAROS:  P63208
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP63208
Protein Feature View
Expand
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.80 Å
  • R-Value Free: 0.314 
  • R-Value Work: 0.275 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 262.7α = 90
b = 148.2β = 120.03
c = 133.3γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
AMoREphasing
CNSrefinement

Structure Validation

View Full Validation Report



View more in-depth experimental data

Entry History 

Deposition Data

Revision History  (Full details and data files)

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