HAMAP rule MF_03010
General rule information
[?]
Accession | MF_03010 |
Dates | 30-JAN-2009 (Created) 20-NOV-2019 (Last updated, Version 14) |
Name | eIF3k |
Scope | Eukaryota |
Templates | Q9UBQ5 (EIF3K_HUMAN); Q3T0V3 (EIF3K_BOVIN); Q9DBZ5 (EIF3K_MOUSE): [Recover all] |
Triggered by |
Propagated annotation
[?]
Identifier, protein and gene names
[?]
Identifier |
|
case <OC:Vertebrata>
Protein name |
|
else
Protein name |
|
end case
case <OC:Vertebrata>
Gene name |
|
else case <OC:Caenorhabditis>
Gene name |
|
else case <OC:Drosophilidae>
Gene name |
|
end case
Comments
[?]
case <OC:Mammalia>
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. |
else
Function | Component of the eukaryotic translation initiation factor 3 (eIF-3) complex, which is involved in protein synthesis of a specialized repertoire of mRNAs and, together with other initiation factors, stimulates binding of mRNA and methionyl-tRNAi to the 40S ribosome. The eIF-3 complex specifically targets and initiates translation of a subset of mRNAs involved in cell proliferation. |
end case
case <OC:Mammalia>
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. Interacts with CCND3, but not with CCND1 and CCND2. |
else case <OC:Vertebrata> and not <OC:Mammalia>
Subunit | Component of the eukaryotic translation initiation factor 3 (eIF-3) complex, which is composed of 13 subunits: @gn(EIF3A), @gn(EIF3B), @gn(EIF3C), @gn(EIF3D), @gn(EIF3E), @gn(EIF3F), @gn(EIF3G), @gn(EIF3H), @gn(EIF3I), @gn(EIF3J), @gn(EIF3K), @gn(EIF3L) and @gn(EIF3M). |
else case <OC:Drosophilidae>
Subunit | Component of the eukaryotic translation initiation factor 3 (eIF-3) complex. The eIF-3 complex interacts with pix. |
else
Subunit | Component of the eukaryotic translation initiation factor 3 (eIF-3) complex. |
end case
case <OC:Vertebrata>
Subcellular location | Nucleus. Cytoplasm. |
else
Subcellular location | Cytoplasm. |
end case
Similarity | Belongs to the eIF-3 subunit K family. |
Keywords
[?]
case <OC:Vertebrata>
end case
case <FTTag:acetyl>
end case
Gene Ontology
[?]
GO:0003723; Molecular function: RNA binding.
GO:0003743; Molecular function: translation initiation factor activity.
GO:0001732; Biological process: formation of cytoplasmic translation initiation complex.
GO:0002183; Biological process: cytoplasmic translational initiation.
GO:0005737; Cellular component: cytoplasm.
GO:0005852; Cellular component: eukaryotic translation initiation factor 3 complex.
GO:0016282; Cellular component: eukaryotic 43S preinitiation complex.
GO:0033290; Cellular component: eukaryotic 48S preinitiation complex.
GO:0003743; Molecular function: translation initiation factor activity.
GO:0001732; Biological process: formation of cytoplasmic translation initiation complex.
GO:0002183; Biological process: cytoplasmic translational initiation.
GO:0005737; Cellular component: cytoplasm.
GO:0005852; Cellular component: eukaryotic translation initiation factor 3 complex.
GO:0016282; Cellular component: eukaryotic 43S preinitiation complex.
GO:0033290; Cellular component: eukaryotic 48S preinitiation complex.
Cross-references
[?]
Features
[?]
case <OC:Mammalia>
From: EIF3K_HUMAN (Q9UBQ5) | ||||||||||||
Key | From | To | Description | Tag | Condition | FTGroup | ||||||
INIT_MET | 1 | 1 | Removed | M | ||||||||
MOD_RES | 2 | 2 | N-acetylalanine | acetyl | A |
end case
Additional information
[?]
Size range | 200-283 amino acids |
Related rules | None |
Fusion | None |