Tbio VPS39 Vam6/Vps39-like protein

Protein Summary

Description

Regulator of TGF-beta/activin signaling, inhibiting SMAD3- and activating SMAD2-dependent transcription. Acts by interfering with SMAD3/SMAD4 complex formation, this would lead to inhibition of SMAD3-dependent transcription and relieve SMAD3 inhibition of SMAD2-dependent promoters, thus increasing SMAD2-dependent transcription. Does not affect TGF-beta-induced SMAD2 or SMAD3 phosphorylation, nor SMAD2/SMAD4 complex formation. Plays a role in vesicle-mediated protein trafficking to lysosomal compartments including the endocytic membrane transport and autophagic pathways. Believed to act in part as a component of the putative HOPS endosomal tethering complex which is proposed to be involved in the Rab5-to-Rab7 endosome conversion probably implicating MON1A/B, and via binding SNAREs and SNARE complexes to mediate tethering and docking events during SNARE-mediated membrane fusion. The HOPS complex is proposed to be recruited to Rab7 on the late endosomal membrane and to regulate late endocytic, phagocytic and autophagic traffic towards lysosomes (PubMed:23351085). Involved in homotypic vesicle fusions between late endosomes and in heterotypic fusions between late endosomes and lysosomes (PubMed:11448994, PubMed:23351085, PubMed:23167963). Required for fusion of endosomes and autophagosomes with lysosomes (PubMed:25783203). This gene encodes a protein that may promote clustering and fusion of late endosomes and lysosomes. The protein may also act as an adaptor protein that modulates the transforming growth factor-beta response by coupling the transforming growth factor-beta receptor complex to the Smad pathway. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jul 2014]

Uniprot Accession IDs

• Q96JC1
• O94869
• Q71SQ6
• Q7Z3V3
• Q96B93
• Q96RM0

Gene Name

• VPS39

Ensembl ID

• ENST00000318006
• ENSP00000326534
• ENSG00000166887
• ENST00000348544
• ENSP00000335193

Symbol

• KIAA0770
• TLP
• VAM6
• TLP
• VAM6
• hVam6p

Knowledge Table

Most Knowledge About	Knowledge Value (0 to 1 scale)
kinase perturbation	0.95
interacting protein	0.71
histone modification site profile	0.69
tissue sample	0.69
cell type or tissue	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: 62.67   (req: < 5)

Gene RIFs: 9   (req: <= 3)

Antibodies: 90   (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: 62.67   (req: >= 5)

Gene RIFs: 9   (req: > 3)

Antibodies: 90   (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