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EIF1 - eukaryotic translation initiation factor 1 (human)

Gene
Symbol
Dates
  • Create:
    2016-09-14
  • Modify:
    2025-02-01
Description
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.

1 Names and Identifiers

1.1 Synonyms

  • A121
  • EIF-1
  • EIF1A
  • ISO1
  • SUI1
  • protein translation factor SUI1 homolog
  • sui1iso1

1.1.1 MeSH Entry Terms

  • EIF-1
  • Eukaryotic Peptide Initiation Factor-1
  • Peptide Initiation Factor EIF-1

1.2 Other Identifiers

1.2.1 HGNC ID

1.2.2 Ensembl ID

1.2.3 Alliance Gene ID

1.2.4 Bgee Gene ID

1.2.5 MIM Number

1.2.6 NCI Thesaurus Code

1.2.7 Open Targets ID

1.2.8 PharmGKB ID

1.2.9 Pharos Target

1.2.10 VEuPathDB ID

1.2.11 Wikidata

3 Proteins

3.1 Protein Function

Component of the 43S pre-initiation complex (43S PIC), which binds to the mRNA cap-proximal region, scans mRNA 5'-untranslated region, and locates the initiation codon (PMID: 12435632, PMID: 14600024, PMID: 9732867). Together with eIF1A (EIF1AX), EIF1 facilitates scanning and is essential for start codon recognition on the basis of AUG nucleotide context and location relative to the 5'-cap (PMID: 12435632, PMID: 14600024, PMID: 9732867). Participates to initiation codon selection by influencing the conformation of the 40S ribosomal subunit and the positions of bound mRNA and initiator tRNA; this is possible after its binding to the interface surface of the platform of the 40S ribosomal subunit close to the P-site (PMID: 14600024). Together with eIF1A (EIF1AX), also regulates the opening and closing of the mRNA binding channel, which ensures mRNA recruitment, scanning and the fidelity of initiation codon selection (PMID: 9732867). Continuously monitors and protects against premature and partial base-pairing of codons in the 5'-UTR with the anticodon of initiator tRNA (PMID: 12435632, PMID: 9732867). Together with eIF1A (EIF1AX), acts for ribosomal scanning, promotion of the assembly of 48S complex at the initiation codon (43S PIC becomes 48S PIC after the start codon is reached), and dissociation of aberrant complexes (PMID: 9732867). Interacts with EIF4G1, which in a mutual exclusive interaction associates either with EIF1 or with EIF4E on a common binding site (PMID: 29987188). EIF4G1-EIF1 complex promotes ribosome scanning (on both short and long 5'UTR), leaky scanning (on short 5'UTR) which is the bypass of the initial start codon, and discrimination against cap-proximal AUG (PMID: 29987188). Is probably maintained within the 43S PIC in open conformation thanks to eIF1A-EIF5 interaction (PMID: 24319994). Once the correct start codon is reached, EIF1 is physically excluded from the decoding site, shifting the PIC into the closed conformation and arresting it at the start codon (PMID: 22813744).

3.2 Protein 3D Structures

3.2.1 PDB Structures

3.2.2 NCBI Protein Structures

3.2.3 AlphaFold Structures

Highly accurate protein structure prediction with AlphaFold. Nature. 2021 Aug;596(7873):583-589. DOI:10.1038/s41586-021-03819-2. PMID:34265844; PMCID:PMC8371605

3.3 Protein Targets

4 BioAssays

4.1 RNAi BioAssays

5 Diseases and Phenotypes

5.1 Gene-Disease Associations

6 Interactions and Pathways

6.1 Chemical-Gene Interactions

6.2 Interactions

6.3 Pathways

7 Expression

8 Target Development Level

9 Literature

9.1 Consolidated References

9.2 NLM Curated PubMed Citations

9.3 Gene-Chemical Co-Occurrences in Literature

9.4 Gene-Gene Co-Occurrences in Literature

9.5 Gene-Disease Co-Occurrences in Literature

10 Patents

10.1 Gene-Chemical Co-Occurrences in Patents

10.2 Gene-Gene Co-Occurrences in Patents

10.3 Gene-Disease Co-Occurrences in Patents

11 Classification

11.1 MeSH Tree

11.2 NCI Thesaurus Tree

11.3 Gene Ontology: Biological Process

11.4 Gene Ontology: Cellular Component

11.5 Gene Ontology: Molecular Function

12 Information Sources

  1. NCBI Gene
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    https://www.ncbi.nlm.nih.gov/home/about/policies/
  2. PubChem
  3. Medical Subject Headings (MeSH)
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    https://www.nlm.nih.gov/copyright.html
  4. Alliance of Genome Resources
    LICENSE
    All annotations and data produced by Alliance members that are accessible from alliancegenome.org are distributed under a CC BY 4.0 license (https://creativecommons.org/licenses/by/4.0/).
    https://www.alliancegenome.org/privacy-warranty-licensing
  5. BioGRID
    LICENSE
    The MIT License (MIT); Copyright Mike Tyers Lab
    https://wiki.thebiogrid.org/doku.php/terms_and_conditions
  6. Database of Interacting Proteins (DIP)
    LICENSE
    All DIP database records available under the terms set by the Creative Commons Attribution-NoDerivs License.
    https://dip.doe-mbi.ucla.edu/dip/termsofuse.html
  7. STRING: functional protein association networks
  8. Comparative Toxicogenomics Database (CTD)
    LICENSE
    It is to be used only for research and educational purposes. Any reproduction or use for commercial purpose is prohibited without the prior express written permission of NC State University.
    http://ctdbase.org/about/legal.jsp
  9. HUGO Gene Nomenclature Committee (HGNC)
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    No restrictions are imposed on access to, or use of, the data provided by the HGNC, which are provided to enhance knowledge and encourage progress in the scientific community.
    https://www.genenames.org/about/
  10. NCBI Gene Expression Omnibus (GEO)
  11. NCBI Structure
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    https://www.ncbi.nlm.nih.gov/home/about/policies/
  12. NCI Thesaurus (NCIt)
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    https://www.cancer.gov/policies/copyright-reuse
  13. Online Mendelian Inheritance in Man (OMIM)
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    The OMIM database is made available to the general public subject to certain restrictions.
    https://omim.org/help/copyright
  14. Open Targets
    LICENSE
    Datasets generated by the Open Targets Platform are freely available for download.
    https://platform-docs.opentargets.org/licence
  15. PharmGKB
    LICENSE
    PharmGKB data are subject to the Creative Commons Attribution-ShareALike 4.0 license (https://creativecommons.org/licenses/by-sa/4.0/).
    https://www.pharmgkb.org/page/policies
  16. Pharos
    LICENSE
    Data accessed from Pharos and TCRD is publicly available from the primary sources listed above. Please respect their individual licenses regarding proper use and redistribution.
    https://pharos.nih.gov/about
  17. RCSB Protein Data Bank (RCSB PDB)
    LICENSE
    Data files contained in the PDB archive (ftp://ftp.wwpdb.org) are free of all copyright restrictions and made fully and freely available for both non-commercial and commercial use. Users of the data should attribute the original authors of that structural data.
    https://www.rcsb.org/pages/policies
  18. Swiss Institute of Bioinformatics Bgee
    LICENSE
    Creative Commons Zero license (CC0)
    https://www.bgee.org/about/
  19. UniProt
    LICENSE
    We have chosen to apply the Creative Commons Attribution (CC BY 4.0, http://creativecommons.org/licenses/by/4.0/) License to all copyrightable parts of our databases.
    https://www.uniprot.org/help/license
  20. VEuPathDB: The Eukaryotic Pathogen, Vector and Host Informatics Resource
    LICENSE
    All data on VEuPathDB websites are provided freely for public use.
    https://veupathdb.org/veupathdb/app/static-content/about.html
  21. Wikidata
  22. Gene Ontology (GO)
    LICENSE
    Gene Ontology Consortium data and data products are licensed under the Creative Commons Attribution 4.0 Unported License (https://creativecommons.org/licenses/by/4.0/legalcode)
    http://geneontology.org/docs/go-citation-policy/
  23. AlphaFold DB
    LICENSE
    All of the data provided is freely available for both academic and commercial use under Creative Commons Attribution 4.0 (CC-BY 4.0) licence terms.
    https://alphafold.ebi.ac.uk/faq
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