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Protein

Eukaryotic translation initiation factor 3 subunit G

Gene

EIF3G

Organism
Bos taurus (Bovine)
Status
Reviewed-Annotation score: -Experimental evidence at transcript leveli

Functioni

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. 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. This subunit can bind 18S rRNA.UniRule annotation

GO - Molecular functioni

GO - Biological processi

Keywordsi

Molecular functionInitiation factor, RNA-binding
Biological processProtein biosynthesis

Names & Taxonomyi

Protein namesi
Recommended name:
Eukaryotic translation initiation factor 3 subunit GUniRule annotation
Short name:
eIF3gUniRule annotation
Alternative name(s):
Eukaryotic translation initiation factor 3 RNA-binding subunitUniRule annotation
Short name:
eIF-3 RNA-binding subunitUniRule annotation
Eukaryotic translation initiation factor 3 subunit 4UniRule annotation
eIF-3-deltaUniRule annotation
eIF3 p42UniRule annotation
eIF3 p44UniRule annotation
Gene namesi
Name:EIF3GUniRule annotation
Synonyms:EIF3S4UniRule annotation
OrganismiBos taurus (Bovine)
Taxonomic identifieri9913 [NCBI]
Taxonomic lineageiEukaryotaMetazoaChordataCraniataVertebrataEuteleostomiMammaliaEutheriaLaurasiatheriaCetartiodactylaRuminantiaPecoraBovidaeBovinaeBos
Proteomesi
  • UP000009136 Componenti: Unplaced

Subcellular locationi

Extracellular region or secreted Cytosol Plasma membrane Cytoskeleton Lysosome Endosome Peroxisome ER Golgi apparatus Nucleus Mitochondrion Manual annotation Automatic computational assertionGraphics by Christian Stolte; Source: COMPARTMENTS

Keywords - Cellular componenti

Cytoplasm, Nucleus

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
ChainiPRO_00002460851 – 320Eukaryotic translation initiation factor 3 subunit GAdd BLAST320

Amino acid modifications

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Modified residuei8PhosphoserineBy similarity1
Modified residuei11PhosphoserineBy similarity1
Modified residuei38PhosphothreonineUniRule annotationBy similarity1
Modified residuei41PhosphothreonineUniRule annotationBy similarity1
Modified residuei42PhosphoserineUniRule annotationBy similarity1
Modified residuei189PhosphoserineBy similarity1
Modified residuei223PhosphoserineBy similarity1
Modified residuei264PhosphoserineBy similarity1

Post-translational modificationi

Phosphorylated. Phosphorylation is enhanced upon serum stimulation.UniRule annotation

Keywords - PTMi

Phosphoprotein

Proteomic databases

PaxDbiQ3ZC12
PeptideAtlasiQ3ZC12
PRIDEiQ3ZC12

Interactioni

Subunit structurei

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 FRAP1 and RAPTOR, leading to phosphorylation and release of RPS6KB1 and binding of EIF4B to eIF-3. Interacts (via C-terminus) with AIFM1 (via N-terminus). Interacts with DHX33; the interaction is independent of RNA (By similarity).UniRule annotationBy similarity

Protein-protein interaction databases

STRINGi9913.ENSBTAP00000003545

Structurei

3D structure databases

ProteinModelPortaliQ3ZC12
SMRiQ3ZC12
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Domains and Repeats

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Domaini239 – 317RRMUniRule annotationAdd BLAST79

Sequence similaritiesi

Belongs to the eIF-3 subunit G family.UniRule annotation

Phylogenomic databases

eggNOGiKOG0122 Eukaryota
ENOG410Y3CW LUCA
HOGENOMiHOG000239560
HOVERGENiHBG026850
InParanoidiQ3ZC12
KOiK03248

Family and domain databases

CDDicd12933 eIF3G, 1 hit
cd12408 RRM_eIF3G_like, 1 hit
Gene3Di3.30.70.330, 1 hit
HAMAPiMF_03006 eIF3g, 1 hit
InterProiView protein in InterPro
IPR017334 eIF3_g
IPR024675 eIF3g_N
IPR034240 eIF3G_RRM
IPR012677 Nucleotide-bd_a/b_plait_sf
IPR035979 RBD_domain_sf
IPR000504 RRM_dom
PANTHERiPTHR10352:SF0 PTHR10352:SF0, 1 hit
PfamiView protein in Pfam
PF12353 eIF3g, 1 hit
PF00076 RRM_1, 1 hit
SMARTiView protein in SMART
SM00360 RRM, 1 hit
SUPFAMiSSF54928 SSF54928, 1 hit
PROSITEiView protein in PROSITE
PS50102 RRM, 1 hit

Sequencei

Sequence statusi: Complete.

Q3ZC12-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MPTGDFDSKP SWADQVEEEG EDDKCVTSEL LKGIPLATGD TSLEPELLPG
60 70 80 90 100
APLPPPKEVI NGNIKTVTEY RIDEDGKKFK IVRTFRIETR KASKAVARRK
110 120 130 140 150
NWKKFGNSEF DPPGPNVATT TVSDDVSMTF ITSKEDLNCQ EEEDPMNKLK
160 170 180 190 200
GQKIVSCRIC KGDHWTTRCP YKDTLGPMQK ELAEQLGLST GEKEKLPGEL
210 220 230 240 250
EPVQATQNKT GKYVPPSLRD GASRRGESMQ PNRRADDNAT IRVTNLSEDT
260 270 280 290 300
RETDLQELFR PFGSISRIYL AKDKTTGQSK GFAFISFHRR EDAARAIAGV
310 320
SGFGYDHLIL NVEWAKPSTN
Length:320
Mass (Da):35,655
Last modified:September 27, 2005 - v1
Checksum:i11789F369E961BEF
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
BC102984 mRNA Translation: AAI02985.1
RefSeqiNP_001073091.1, NM_001079623.2
UniGeneiBt.49351

Genome annotation databases

GeneIDi615695
KEGGibta:615695

Similar proteinsi

Entry informationi

Entry nameiEIF3G_BOVIN
AccessioniPrimary (citable) accession number: Q3ZC12
Entry historyiIntegrated into UniProtKB/Swiss-Prot: July 11, 2006
Last sequence update: September 27, 2005
Last modified: April 25, 2018
This is version 88 of the entry and version 1 of the sequence. See complete history.
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programChordata Protein Annotation Program

Miscellaneousi

Keywords - Technical termi

Complete proteome, Reference proteome

Documents

  1. Translation initiation factors
    List of translation initiation factor entries
  2. SIMILARITY comments
    Index of protein domains and families

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