UniProt:Q13347 EIF3I

chain
  • chain:1-325
checksum 02797BB72A752A96
comment
  • 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).SUBUNIT Component of the eukaryotic translation initiation factor 3 (eIF-3) complex, which is composed of 13 subunits: EIF3A, EIF3B, EIF3C, EIF3D, EIF3E, EIF3F, EIF3G, EIF3H, EIF3I, EIF3J, EIF3K, EIF3L and EIF3M. The eIF-3 complex appears to include 3 stable modules: module A is composed of EIF3A, EIF3B, EIF3G and EIF3I; module B is composed of EIF3F, EIF3H, and EIF3M; and module C is composed of EIF3C, EIF3D, EIF3E, EIF3K and EIF3L. EIF3C of module C binds EIF3B of module A and EIF3H of module B, thereby linking the three modules. EIF3J is a labile subunit that binds to the eIF-3 complex via EIF3B. The eIF-3 complex interacts with RPS6KB1 under conditions of nutrient depletion. Mitogenic stimulation leads to binding and activation of a complex composed of MTOR and RPTOR, leading to phosphorylation and release of RPS6KB1 and binding of EIF4B to eIF-3.INTERACTION Phosphorylated by TGF-beta type II receptor.MASS SPECTROMETRY Belongs to the eIF-3 subunit I family.
crossReference
databaseName UniProt
dbId 72535
description
  • recommendedName: fullName evidence="1"Eukaryotic translation initiation factor 3 subunit I shortName evidence="1"eIF3i alternativeName: fullName evidence="1"Eukaryotic translation initiation factor 3 subunit 2 alternativeName: TGF-beta receptor-interacting protein 1 shortName: TRIP-1 alternativeName: fullName evidence="1"eIF-3-beta alternativeName: fullName evidence="1"eIF3 p36
displayName UniProt:Q13347 EIF3I
geneName
  • EIF3I
  • EIF3S2
  • TRIP1
identifier Q13347
isSequenceChanged false
keyword
  • 3D-structure
  • Acetylation
  • Cytoplasm
  • Direct protein sequencing
  • Initiation factor
  • Isopeptide bond
  • Phosphoprotein
  • Protein biosynthesis
  • Proteomics identification
  • Reference proteome
  • Repeat
  • Ubl conjugation
  • WD repeat
modified [InstanceEdit:9926675] Weiser, Joel, 2024-11-03
moleculeType Protein
name
  • EIF3I
otherIdentifier
  • 11747337_x_at
  • 1644_at
  • 16662031
  • 208756_3p_at
  • 208756_PM_at
  • 208756_at
  • 2328801
  • 2328802
  • 2328804
  • 2328806
  • 2328809
  • 2328810
  • 2328811
  • 2328812
  • 2328813
  • 2328814
  • 2328815
  • 2328816
  • 2328817
  • 2328818
  • 2328819
  • 2328820
  • 2328821
  • 2328822
  • 2328823
  • 2328824
  • 2328825
  • 2328826
  • 2328834
  • 3067803
  • 32230_at
  • 58907_at
  • 7899737
  • 8668
  • A_14_P114436
  • A_14_P129585
  • A_14_P200014
  • A_23_P85560
  • GE567023
  • GO:0001732
  • GO:0002183
  • GO:0003723
  • GO:0003743
  • GO:0005515
  • GO:0005737
  • GO:0005829
  • GO:0005852
  • GO:0006412
  • GO:0006413
  • GO:0016282
  • GO:0033290
  • GO:0045202
  • GO:0065003
  • GO:0070062
  • GO:0071541
  • HMNXSV003016467
  • HMNXSV003058292
  • ILMN_1671291
  • PH_hs_0011309
  • TC01000424.hg
  • U36764_at
  • g1036804_3p_x_at
physicalEntity
referenceDatabase [ReferenceDatabase:2] UniProt
referenceGene
referenceTranscript
schemaClass ReferenceGeneProduct
secondaryIdentifier
  • EIF3I_HUMAN
sequenceLength 325
species [Species:48887] Homo sapiens
stId uniprot:Q13347
url http://purl.uniprot.org/uniprot/Q13347
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