Prokaryotic ubiquitin-like protein Pup - Q8NQE0 (PUP_CORGL)

 

Protein Feature View of PDB entries mapped to a UniProtKB sequence  

  • Number of PDB entries for Q8NQE0: 1
 
Function
Protein modifier that is covalently attached to lysine residues of substrate proteins, thereby targeting them for proteasomal degradation. The tagging system is termed pupylation. UniProt
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Subunit Structure
Strongly interacts with the proteasome-associated ATPase ARC through a hydrophobic interface; the interacting region of Pup lies in its C-terminal half. There is one Pup binding site per ARC hexamer ring (By similarity). Interacts with the Pup--protein ligase PafA and with the depupylase Dop via its C-terminal half. UniProt
Domain
The N-terminal unstructured half of Pup provides a signal required to initiate unfolding and degradation by the proteasome but is not needed for pupylation, while the C-terminal helical half of Pup interacts with ARC to target proteins to the proteasome (By similarity). The C-terminal 26 residues of PuP also interact with PafA and Dop. UniProt
  • Other Gene names: pup, Cgl1495, cg1689
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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 Protein disorder predictions are based on JRONN (Troshin, P. and Barton, G. J. unpublished), a Java implementation of RONN  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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