Tbio EIF3B Eukaryotic translation initiation factor 3 subunit B

Protein Summary

Description

RNA-binding component of the eukaryotic translation initiation factor 3 (eIF-3) complex, which is required for several steps in the initiation of protein synthesis (PubMed:9388245, PubMed:17581632, PubMed:25849773, PubMed:27462815). The eIF-3 complex associates with the 40S ribosome and facilitates the recruitment of eIF-1, eIF-1A, eIF-2:GTP:methionyl-tRNAi and eIF-5 to form the 43S pre-initiation complex (43S PIC). The eIF-3 complex stimulates mRNA recruitment to the 43S PIC and scanning of the mRNA for AUG recognition. The eIF-3 complex is also required for disassembly and recycling of post-termination ribosomal complexes and subsequently prevents premature joining of the 40S and 60S ribosomal subunits prior to initiation (PubMed:9388245, PubMed:17581632). The eIF-3 complex specifically targets and initiates translation of a subset of mRNAs involved in cell proliferation, including cell cycling, differentiation and apoptosis, and uses different modes of RNA stem-loop binding to exert either translational activation or repression (PubMed:25849773). (Microbial infection) In case of FCV infection, plays a role in the ribosomal termination-reinitiation event leading to the translation of VP2 (PubMed:18056426).

Uniprot Accession IDs

• P55884
• A4D208
• Q2NL77
• Q9UMF9
• eIF3b

Gene Name

• EIF3B

Ensembl ID

• ENST00000360876
• ENSP00000354125
• ENSG00000106263
• ENST00000397011
• ENSP00000380206

Symbol

• EIF3S9
• PRT1
• EIF3S9
• EIF3-ETA
• EIF3-P110
• EIF3-P116

Knowledge Table

Most Knowledge About	Knowledge Value (0 to 1 scale)
drug perturbation	1
kinase perturbation	1
hub protein	0.96
disease perturbation	0.93
transcription factor binding site profile	0.9

Protein Classes

PANTHER Classes

Protein / Nucleic Acid Binding / Rna Binding Protein / Translation Factor / Translation Initiation Factor / Eukaryotic Translation Initiation Factor 3 Subunit B

DTO Classes

Protein / Nucleic Acid Binding / Rna Binding Protein / Translation Factor / Translation Initiation Factor / Eukaryotic Translation Initiation Factor 3 Subunit B

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: 131.72   (req: < 5)

Gene RIFs: 19   (req: <= 3)

Antibodies: 115   (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: 131.72   (req: >= 5)

Gene RIFs: 19   (req: > 3)

Antibodies: 115   (req: > 50)

- OR - satisfy the following criterion:

Gene Ontology Terms: 9

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