Summary

Name EIF3I
Full Name Eukaryotic translation initiation factor 3 subunit I
Synonyms eIF3i, Eukaryotic translation initiation factor 3 subunit 2, TGF-beta receptor-interacting protein 1, TRIP-1, eIF-3-beta, eIF3 p36 | EIF3S2, TRIP1
Primary ID Q13347
Links - -
Type protein
Relations 2
Function Component of the eukaryotic translation initiation factor 3 (eIF-3) complex, which is required for several steps in the initiation of protein synthesis (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: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).

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Relations

Regulator Mechanism target score
+ form complex img/form-complex.png binding EIF3_complex 0.932
Publications: 1 Organism: In Vitro
+ up-regulates img/direct-activation.png binding TGFBR2 0.329
Publications: 1 Organism: Homo Sapiens