Eukaryotic translation initiation factor 3 subunit I (Q9QZD9)

Uniprot ID Q9QZD9
Protein Name Eukaryotic translation initiation factor 3 subunit I
Gene Name Eif3i
Species Mus musculus (Mouse)
Signal peptide(a) N Secretome P(b) 0.727
Function Component of the eukaryotic translation initiation factor 3 (eIF-3) complex, which is required for several steps in the initiation of protein synthesis. 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. 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. .
GO - Molecular function
  • enzyme binding : ISO:MGI
  • translation initiation factor activity : ISO:MGI
GO - Biological process
  • translational initiation : IDA:UniProtKB
(a) The Signal peptide D-score cutoff for "YES"(having signal peptide) is 0.45.
(b) Non-classically secreted proteins should obtain an NN-score(Neural Networks score) exceeding the normal threshold of 0.5, but not at the same time be predicted to contain a signal peptide.