Tbio UBQLN2 Ubiquilin-2

Protein Summary

Description

Plays an important role in the regulation of different protein degradation mechanisms and pathways including ubiquitin-proteasome system (UPS), autophagy and the endoplasmic reticulum-associated protein degradation (ERAD) pathway. Mediates the proteasomal targeting of misfolded or accumulated proteins for degradation by binding (via UBA domain) to their polyubiquitin chains and by interacting (via ubiquitin-like domain) with the subunits of the proteasome (PubMed:10983987). Plays a role in the ERAD pathway via its interaction with ER-localized proteins FAF2/UBXD8 and HERPUD1 and may form a link between the polyubiquitinated ERAD substrates and the proteasome (PubMed:24215460, PubMed:18307982). Involved in the regulation of macroautophagy and autophagosome formation; required for maturation of autophagy-related protein LC3 from the cytosolic form LC3-I to the membrane-bound form LC3-II and may assist in the maturation of autophagosomes to autolysosomes by mediating autophagosome-lysosome fusion (PubMed:19148225, PubMed:20529957). Negatively regulates the endocytosis of GPCR receptors: AVPR2 and ADRB2, by specifically reducing the rate at which receptor-arrestin complexes concentrate in clathrin-coated pits (CCPs) (PubMed:18199683). This gene encodes an ubiquitin-like protein (ubiquilin) that shares high degree of similarity with related products in yeast, rat and frog. Ubiquilins contain a N-terminal ubiquitin-like domain and a C-terminal ubiquitin-associated domain. They physically associate with both proteasomes and ubiquitin ligases; and thus, are thought to functionally link the ubiquitination machinery to the proteasome to affect in vivo protein degradation. This ubiquilin has also been shown to bind the ATPase domain of the Hsp70-like Stch protein. [provided by RefSeq, Oct 2009]

Uniprot Accession IDs

• Q9UHD9
• O94798
• Q5D027
• Q9H3W6
• Q9HAZ4

Gene Name

• UBQLN2

Ensembl ID

• ENST00000338222
• ENSP00000345195
• ENSG00000188021

Symbol

• N4BP4
• PLIC2
• DSK2
• ALS15
• CHAP1
• N4BP4
• PLIC2
• HRIHFB2157

Knowledge Table

Most Knowledge About	Knowledge Value (0 to 1 scale)
protein domain	0.99
virus perturbation	0.98
transcription factor perturbation	0.91
kinase perturbation	0.84
disease perturbation	0.68

Protein Classes

No PANTHER Classes or DTO Classes found

IDG Development Level Summary

Tdark

These are targets about which virtually nothing is known. They do not have known drug or small molecule activities
- AND - satisfy two or more of the following criteria:

Pubmed score: 159.23   (req: < 5)

Gene RIFs: 71   (req: <= 3)

Antibodies: 242   (req: <= 50)

Tbio

These targets do not have known drug or small molecule activities
- AND - satisfy two or more of the following criteria:

Pubmed score: 159.23   (req: >= 5)

Gene RIFs: 71   (req: > 3)

Antibodies: 242   (req: > 50)

- OR - satisfy the following criterion:

Gene Ontology Terms: 7

Tchem

Target has at least one ChEMBL compound with an activity cutoff of < 30 nM - AND - satisfies the preceding conditions

Active Ligand: 0

Tclin

Target has at least one approved drug - AND - satisfies the preceding conditions

Active Drug: 0