F-box/WD repeat-containing protein 7 - Q969H0 (FBXW7_HUMAN)

 

Protein Feature View of PDB entries mapped to a UniProtKB sequence  

  • Number of PDB entries for Q969H0: 5
 
Function
Substrate recognition component of an SCF (SKP1-CUL1-F-box protein) E3 ubiquitin-protein ligase complex which mediates the ubiquitination and subsequent proteasomal degradation of target proteins. Recognizes and binds phosphorylated sites/phosphodegrons within target proteins and thereafter bring them to the SCF complex for ubiquitination (PubMed:17434132). Identified substrates include cyclin-E (CCNE1 or CCNE2), JUN, MYC, NOTCH1 released notch intracellular domain (NICD), and probably PSEN1 (PubMed:11565034, PubMed:12354302, PubMed:11585921, PubMed:15103331, PubMed:14739463, PubMed:17558397, PubMed:17873522, PubMed:22608923). Acts as a negative regulator of JNK signaling by binding to phosphorylated JUN and promoting its ubiquitination and subsequent degradation (PubMed:14739463). UniProt
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Subunit Structure
Homodimer; homodimerization plays a role in substrate binding and/or ubiquitination and degradation (PubMed:22608923, PubMed:17434132). Component of the SCF(FBXW7) complex consisting of CUL1, RBX1, SKP1 and FBXW7. Interacts with PSEN1, cyclin-E (CCNE1 or CCNE2), NOTCH1 intracellular domain/NICD, NOTCH4 intracellular domain/NICD and SKP1. Interacts with MYC (when phosphorylated). Isoform 1 interacts with USP28, leading to counteract ubiquitination of MYC. Isoform 3 interacts (via WD repeats) with SV40 large T antigen (via CPD region). Forms a trimeric complex with NOTCH1 and SGK1. Interacts with JUN (PubMed:14739463, PubMed:22608923). Found in a complex with JUN and PRR7 (PubMed:27458189). Interacts with JUN and PRR7; the interaction inhibits ubiquitination-mediated JUN degradation promoting its phosphorylation and transcriptional activity (PubMed:27458189). Interacts (when phosphorylated at Thr-205) with PIN1, leading to disrupt FBXW7 dimerization and promoting FBXW7 autoubiquitination and degradation (PubMed:22608923). Interacts with UBE2QL1 (PubMed:24000165). Interacts with FAM83D; promotes FBXW7 degradation (PubMed:24344117). Interacts with MYCN; FBXW7 competes with AURKA for binding to unphosphorylated MYCN but not for binding to phosphorylated MYCN (PubMed:27837025). Isoform 3 interacts with STOML1 (PubMed:23082202). UniProt
Domain
The F-box domain mediates interaction with SKP1. UniProt
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Data in green originates from UniProtKB  
Variation data (sourced from UniProt) shows non-genetic variation from the ExPASy   and dbSNP   websites.
Data in yellow originates from Pfam  , by interacting with the HMMER3 web site  
Data in purple originates from Phosphosite  .
Data in orange originates from the SCOP   (version 1.75) and SCOPe   (version 2.04) classifications.
Data in grey has been calculated using BioJava  . Protein disorder predictions are based on JRONN (Troshin, P. and Barton, G. J. unpublished), a Java implementation of RONN  
  • Red: potentially disorderd region
  • Blue: probably ordered region.
Hydropathy has been calculated using a sliding window of 15 residues and summing up scores from standard hydrophobicity tables.
  • Red: hydrophobic
  • Blue: hydrophilic.
Data in lilac represent the genomic exon structure projected onto the UniProt sequence.
Data in blue originates from PDB
  • Secstruc: Secondary structure projected from representative PDB entries onto the UniProt sequence.
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Validation Track

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Data in red indicates combined ranges of Homology Models from SBKB   and the Protein Model Portal  
The PDB to UniProt mapping is based on the data provided by the EBI SIFTS project. See also Velankar et al., Nucleic Acids Research 33, D262-265 (2005).
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