Ubiquitin-conjugating enzyme E2 L3 - P68036 (UB2L3_HUMAN)

 

Protein Feature View of PDB entries mapped to a UniProtKB sequence  

  • Number of PDB entries for P68036: 9
 
Function
Ubiquitin-conjugating enzyme E2 that specifically acts with HECT-type and RBR family E3 ubiquitin-protein ligases. Does not function with most RING-containing E3 ubiquitin-protein ligases because it lacks intrinsic E3-independent reactivity with lysine: in contrast, it has activity with the RBR family E3 enzymes, such as PRKN and ARIH1, that function like function like RING-HECT hybrids. Accepts ubiquitin from the E1 complex and catalyzes its covalent attachment to other proteins. In vitro catalyzes 'Lys-11'-linked polyubiquitination. Involved in the selective degradation of short-lived and abnormal proteins. Down-regulated during the S-phase it is involved in progression through the cell cycle. Regulates nuclear hormone receptors transcriptional activity. May play a role in myelopoiesis. UniProt
Catalytic Activity
S-ubiquitinyl-[E1 ubiquitin-activating enzyme]-L-cysteine + [E2 ubiquitin-conjugating enzyme]-L-cysteine = [E1 ubiquitin-activating enzyme]-L-cysteine + S-ubiquitinyl-[E2 ubiquitin-conjugating enzyme]-L-cysteine. UniProt
Pathway Maps
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Reactions:
      ESCHER  BiGG
Subunit Structure
Interacts with PRKN; involved in ubiquitination and degradation of misfolded proteins. Interacts with UBE3A; used by the papilloma virus HPV-16 E6 protein to ubiquitinate p53/TP53. Interacts with CCNB1IP1, CBL, ZAP70, RNF19A, RNF19B and RNF144B. Interacts with ARIH1. Interacts with ARIH2 (via RING-type 1). Interacts with NCOA1; they functionally interact to regulate progesterone receptor transcriptional activity. May interact with NR3C1. Interacts with NDFIP1 (via N-terminus); the interaction mediates recruitment of UBE2L3 to ITCH and causes MAP3K7 ubiquitination (PubMed:25632008). UniProt
Domain
In contrast to other ubiquitin-conjugating enzymes E2, residues essential for lysine reactivity are absent: Pro and a His residues are present instead of an Asp and an Asp residues in positions 88 and 119, respectively. 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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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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