Tbio CLU Clusterin

Protein Summary

Description

Isoform 1 functions as extracellular chaperone that prevents aggregation of nonnative proteins. Prevents stress-induced aggregation of blood plasma proteins. Inhibits formation of amyloid fibrils by APP, APOC2, B2M, CALCA, CSN3, SNCA and aggregation-prone LYZ variants (in vitro). Does not require ATP. Maintains partially unfolded proteins in a state appropriate for subsequent refolding by other chaperones, such as HSPA8/HSC70. Does not refold proteins by itself. Binding to cell surface receptors triggers internalization of the chaperone-client complex and subsequent lysosomal or proteasomal degradation. Secreted isoform 1 protects cells against apoptosis and against cytolysis by complement. Intracellular isoforms interact with ubiquitin and SCF (SKP1-CUL1-F-box protein) E3 ubiquitin-protein ligase complexes and promote the ubiquitination and subsequent proteasomal degradation of target proteins. Promotes proteasomal degradation of COMMD1 and IKBKB. Modulates NF-kappa-B transcriptional activity. Nuclear isoforms promote apoptosis. Mitochondrial isoforms suppress BAX-dependent release of cytochrome c into the cytoplasm and inhibit apoptosis. Plays a role in the regulation of cell proliferation. The protein encoded by this gene is a secreted chaperone that can under some stress conditions also be found in the cell cytosol. It has been suggested to be involved in several basic biological events such as cell death, tumor progression, and neurodegenerative disorders. Alternate splicing results in both coding and non-coding variants.[provided by RefSeq, May 2011]

Uniprot Accession IDs

• P10909
• B2R9Q1
• B3KSE6
• P11380
• P11381
• Q2TU75
• Q5HYC1
• Q7Z5B9

Gene Name

• CLU

Ensembl ID

• ENST00000316403
• ENSP00000315130
• ENSG00000120885
• ENST00000405140
• ENSP00000385419
• ENST00000523500
• ENSP00000429620

Symbol

• APOJ
• CLI
• KUB1
• CLI
• AAG4
• APOJ
• CLU1
• CLU2
• KUB1
• SGP2
• APO-J
• SGP-2
• SP-40
• TRPM2
• TRPM-2
• NA1/NA2

Knowledge Table

Most Knowledge About	Knowledge Value (0 to 1 scale)
biological process	1
transcription factor perturbation	1
virus perturbation	0.96
PubMedID	0.95
chemical	0.87

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: 2218.06   (req: < 5)

Gene RIFs: 475   (req: <= 3)

Antibodies: 1092   (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: 2218.06   (req: >= 5)

Gene RIFs: 475   (req: > 3)

Antibodies: 1092   (req: > 50)

- OR - satisfy the following criterion:

Gene Ontology Terms: 57

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