Tchem TARBP2 RISC-loading complex subunit TARBP2

Protein Summary

Description

Required for formation of the RNA induced silencing complex (RISC). Component of the RISC loading complex (RLC), also known as the micro-RNA (miRNA) loading complex (miRLC), which is composed of DICER1, AGO2 and TARBP2. Within the RLC/miRLC, DICER1 and TARBP2 are required to process precursor miRNAs (pre-miRNAs) to mature miRNAs and then load them onto AGO2. AGO2 bound to the mature miRNA constitutes the minimal RISC and may subsequently dissociate from DICER1 and TARBP2. May also play a role in the production of short interfering RNAs (siRNAs) from double-stranded RNA (dsRNA) by DICER1. Binds to the HIV-1 TAR RNA which is located in the long terminal repeat (LTR) of HIV-1, and stimulates translation of TAR-containing RNAs. This is achieved in part at least by binding to and inhibiting EIF2AK2/PKR, thereby reducing phosphorylation and inhibition of EIF2S1/eIF-2-alpha. May also promote translation of TAR-containing RNAs independently of EIF2AK2/PKR. HIV-1, the causative agent of acquired immunodeficiency syndrome (AIDS), contains an RNA genome that produces a chromosomally integrated DNA during the replicative cycle. Activation of HIV-1 gene expression by the transactivator Tat is dependent on an RNA regulatory element (TAR) located downstream of the transcription initiation site. The protein encoded by this gene binds between the bulge and the loop of the HIV-1 TAR RNA regulatory element and activates HIV-1 gene expression in synergy with the viral Tat protein. Alternative splicing results in multiple transcript variants encoding different isoforms. This gene also has a pseudogene. [provided by RefSeq, Jul 2008]

Uniprot Accession IDs

• Q15633
• Q12878
• Q8WY32
• Q8WY33
• Q9BRY2

Gene Name

• TARBP2

Ensembl ID

• ENST00000266987
• ENSP00000266987
• ENSG00000139546
• ENST00000394357
• ENSP00000377885
• ENST00000456234
• ENSP00000416077

Symbol

• TRBP
• LOQS
• TRBP
• TRBP1
• TRBP2

Knowledge Table

Most Knowledge About	Knowledge Value (0 to 1 scale)
transcription factor binding site profile	0.91
disease perturbation	0.87
biological process	0.79
cell type or tissue	0.75
transcription factor perturbation	0.74

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: 90.16   (req: < 5)

Gene RIFs: 58   (req: <= 3)

Antibodies: 362   (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: 90.16   (req: >= 5)

Gene RIFs: 58   (req: > 3)

Antibodies: 362   (req: > 50)

- OR - satisfy the following criterion:

Gene Ontology Terms: 29

Tchem

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

Active Ligand: 1

Tclin

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

Active Drug: 0