EIF1 eukaryotic translation initiation factor 1 [Homo sapiens (human)] - Gene

Summary

Official Symbol: EIF1provided by HGNC
Official Full Name: eukaryotic translation initiation factor 1provided by HGNC
Primary source: HGNC:HGNC:3249
See related: Ensembl:ENSG00000173812 MIM:619901; AllianceGenome:HGNC:3249
Gene type: protein coding
RefSeq status: VALIDATED
Organism: Homo sapiens
Lineage: Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Mammalia; Eutheria; Euarchontoglires; Primates; Haplorrhini; Catarrhini; Hominidae; Homo
Also known as: A121; ISO1; SUI1; EIF-1; EIF1A
Summary: Enables ribosomal small subunit binding activity and translation initiation factor activity. Involved in regulation of translational initiation and translational initiation. Located in cytoplasm and nucleus. Part of eukaryotic 43S preinitiation complex; eukaryotic 48S preinitiation complex; and multi-eIF complex. [provided by Alliance of Genome Resources, Dec 2024]
Expression: Ubiquitous expression in bone marrow (RPKM 681.9), fat (RPKM 274.0) and 25 other tissues See more
Orthologs: mouse all
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Genomic context

Location:: 17q21.2

Exon count:: 4

Annotation release	Status	Assembly	Chr	Location
RS_2024_08	current	GRCh38.p14 (GCF_000001405.40)	17	NC_000017.11 (41688885..41692668)
RS_2024_08	current	T2T-CHM13v2.0 (GCF_009914755.1)	17	NC_060941.1 (42545340..42549123)
RS_2024_09	previous assembly	GRCh37.p13 (GCF_000001405.25)	17	NC_000017.10 (39845137..39848920)

Chromosome 17 - NC_000017.11 Genomic Context describing neighboring genes

Genomic regions, transcripts, and products

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Genomic Sequence:

Go to nucleotide: Graphics FASTA GenBank

Bibliography

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GeneRIFs: Gene References Into Functions

What's a GeneRIF?

Nuclear release of eIF1 restricts start-codon selection during mitosis.
Title: Nuclear release of eIF1 restricts start-codon selection during mitosis.
Inhibitors of eIF4G1-eIF1 uncover its regulatory role of ER/UPR stress-response genes independent of eIF2alpha-phosphorylation.
Title: Inhibitors of eIF4G1-eIF1 uncover its regulatory role of ER/UPR stress-response genes independent of eIF2α-phosphorylation.
These data directly implicate translational repression in C9orf72 repeat-induced neurodegeneration and identify eIF1A as a novel modifier of C9orf72 repeat toxicity.
Title: C9orf72 arginine-rich dipeptide proteins interact with ribosomal proteins in vivo to induce a toxic translational arrest that is rescued by eIF1A.
results indicate that in humans, eIF5B displacing eIF2 from Met-tRNAi upon subunit joining may be coupled to eIF1A displacing eIF5 from eIF5B, allowing the eIF5:eIF2-GDP complex to leave the ribosome.
Title: Human eIF5 and eIF1A Compete for Binding to eIF5B.
We report that eIF4G1 exists in two complexes, either with eIF4E or with eIF1. Using an eIF1 mutant impaired in eIF4G1 binding, we demonstrate that eIF1-eIF4G1 interaction is important for leaky scanning and for avoiding m7G-cap-proximal initiation.
Title: Dynamic Interaction of Eukaryotic Initiation Factor 4G1 (eIF4G1) with eIF4E and eIF1 Underlies Scanning-Dependent and -Independent Translation.
Anti-Sui1 could be utilized as a supplementary serological marker.
Title: Autoantibody response to Sui1 and its tissue-specific expression in hepatocellular carcinoma.
eIF1A is a novel component of the Ago2-centred RNA-induced silencing complexes (RISCs) and augments Ago2-dependent RNAi and miRNA biogenesis.
Title: eIF1A augments Ago2-mediated Dicer-independent miRNA biogenesis and RNA interference.
eEF4GI shares this activity and also interacts with eIF1.
Title: Translational tolerance of mitochondrial genes to metabolic energy stress involves TISU and eIF1-eIF4GI cooperation in start codon selection.
eIF1, eIF1A, eIF3j, and the eIF2-GTP-Met-tRNAi ternary complex stably bind to the 43 S preinitiation complex
Title: Human eukaryotic initiation factor 2 (eIF2)-GTP-Met-tRNAi ternary complex and eIF3 stabilize the 43 S preinitiation complex.
Coordinated movements of eukaryotic translation initiation factors eIF1, eIF1A, and eIF5 trigger phosphate release from eIF2 in response to start codon recognition by the ribosomal preinitiation complex
Title: Coordinated movements of eukaryotic translation initiation factors eIF1, eIF1A, and eIF5 trigger phosphate release from eIF2 in response to start codon recognition by the ribosomal preinitiation complex.

Submit: New GeneRIF Correction See all GeneRIFs (12)

Phenotypes

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Find tests for this gene in the NIH Genetic Testing Registry (GTR)

Review eQTL and phenotype association data in this region using PheGenI

Variation

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See variants in ClinVar

See studies and variants in dbVar

See Variation Viewer (GRCh37.p13)

See Variation Viewer (GRCh38)

Interactions

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Products	Interactant	Other Gene	Complex	Source	Pubs	Description

General gene information

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Markers

D17S1704 (e-PCR)
- UniSTS:153863

ECD23930 (e-PCR)
- UniSTS:304914

WI-9294 (e-PCR)
- UniSTS:24182

D8S1344E (e-PCR)
- UniSTS:151162

RH36905 (e-PCR)
- UniSTS:87932

D17S864E (e-PCR)
- UniSTS:472985

D17S1407E (e-PCR)
- UniSTS:150453

G43274 (e-PCR)
- UniSTS:94916

Gene Ontology Provided by GOA

Function	Evidence Code	Pubs
enables RNA binding	HDA more info	PubMed
enables RNA binding	IBA Inferred from Biological aspect of Ancestor more info
enables protein binding	IPI Inferred from Physical Interaction more info	PubMed
enables ribosomal small subunit binding	IBA Inferred from Biological aspect of Ancestor more info
enables ribosomal small subunit binding	IDA Inferred from Direct Assay more info	PubMed
enables translation factor activity, RNA binding	TAS Traceable Author Statement more info	PubMed
enables translation initiation factor activity	IBA Inferred from Biological aspect of Ancestor more info
enables translation initiation factor activity	IDA Inferred from Direct Assay more info	PubMed
enables translation initiation factor activity	NAS Non-traceable Author Statement more info	PubMed

Process	Evidence Code	Pubs
involved_in regulation of translational initiation	IDA Inferred from Direct Assay more info	PubMed
involved_in translational initiation	IDA Inferred from Direct Assay more info	PubMed

Component	Evidence Code	Pubs
located_in cytoplasm	IDA Inferred from Direct Assay more info	PubMed
part_of eukaryotic 43S preinitiation complex	IBA Inferred from Biological aspect of Ancestor more info
part_of eukaryotic 43S preinitiation complex	IDA Inferred from Direct Assay more info	PubMed
part_of eukaryotic 48S preinitiation complex	IDA Inferred from Direct Assay more info	PubMed
part_of multi-eIF complex	IDA Inferred from Direct Assay more info	PubMed
located_in nucleus	IDA Inferred from Direct Assay more info	PubMed

General protein information

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Preferred Names: eukaryotic translation initiation factor 1

Names: protein translation factor SUI1 homolog; sui1iso1

NCBI Reference Sequences (RefSeq)

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RefSeqs maintained independently of Annotated Genomes

These reference sequences exist independently of genome builds. Explain

These reference sequences are curated independently of the genome annotation cycle, so their versions may not match the RefSeq versions in the current genome build. Identify version mismatches by comparing the version of the RefSeq in this section to the one reported in Genomic regions, transcripts, and products above.