EIF5A

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EIF5A
Protein EIF5A PDB 1FH4.png
Available structures
PDBOrtholog search: PDBe RCSB
Identifiers
AliasesEIF5A, EIF-5A, EIF5A1, eIF5AI, eukaryotic translation initiation factor 5A, eIF-4D, FABAS
External IDsOMIM: 600187 MGI: 106248 HomoloGene: 133803 GeneCards: EIF5A
Orthologs
SpeciesHumanMouse
Entrez
Ensembl
UniProt
RefSeq (mRNA)
RefSeq (protein)
Location (UCSC)Chr 17: 7.31 – 7.31 MbChr 11: 69.81 – 69.81 Mb
PubMed search[3][4]
Wikidata
View/Edit HumanView/Edit Mouse

Eukaryotic translation initiation factor 5A-1 is a protein that in humans is encoded by the EIF5A gene.[5]

It is the only known protein to contain the unusual amino acid hypusine [Nε-(4-amino-2-hydroxybutyl)-lysine], which is synthesized on eIF5A at a specific lysine residue from the polyamine spermidine by two catalytic steps.[6]

EF-P is the bacterial homolog of eIF5A, which is modified post-translationally in a similar but distinct way.[7][8] Both proteins are believed to catalyze peptide bond formation and help resolve ribosomal stalls, making them elongation factors despite the "initiation factor" name originally assigned.[9]

Clinical relevance[]

Germline deleterious heterozygous EIF5A variants cause Faundes-Banka syndrome.[10][11] This rare human disorder is characterized by variable combinations of developmental delay, microcephaly, micrognathia and dysmorphic features.

References[]

  1. ^ a b c ENSG00000288145 GRCh38: Ensembl release 89: ENSG00000132507, ENSG00000288145 - Ensembl, May 2017
  2. ^ a b c GRCm38: Ensembl release 89: ENSMUSG00000078812 - Ensembl, May 2017
  3. ^ "Human PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
  4. ^ "Mouse PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
  5. ^ Steinkasserer A, Jones T, Sheer D, Koettnitz K, Hauber J, Bevec D (February 1995). "The eukaryotic cofactor for the human immunodeficiency virus type 1 (HIV-1) rev protein, eIF-5A, maps to chromosome 17p12-p13: three eIF-5A pseudogenes map to 10q23.3, 17q25, and 19q13.2". Genomics. 25 (3): 749–752. doi:10.1016/0888-7543(95)80025-H. PMID 7759117.
  6. ^ Wolff EC, Kang KR, Kim YS, Park MH (August 2007). "Posttranslational synthesis of hypusine: evolutionary progression and specificity of the hypusine modification". Amino Acids. 33 (2): 341–350. doi:10.1007/s00726-007-0525-0. PMC 2572820. PMID 17476569.
  7. ^ Park JH, Johansson HE, Aoki H, Huang BX, Kim HY, Ganoza MC, Park MH (January 2012). "Post-translational modification by β-lysylation is required for activity of Escherichia coli elongation factor P (EF-P)". The Journal of Biological Chemistry. 287 (4): 2579–2590. doi:10.1074/jbc.M111.309633. PMC 3268417. PMID 22128152.
  8. ^ Peil L, Starosta AL, Virumäe K, Atkinson GC, Tenson T, Remme J, Wilson DN (August 2012). "Lys34 of translation elongation factor EF-P is hydroxylated by YfcM". Nature Chemical Biology. 8 (8): 695–697. doi:10.1038/nchembio.1001. PMID 22706199.
  9. ^ Rossi D, Kuroshu R, Zanelli CF, Valentini SR (2013). "eIF5A and EF-P: two unique translation factors are now traveling the same road". Wiley Interdisciplinary Reviews. RNA. 5 (2): 209–222. doi:10.1002/wrna.1211. PMID 24402910. S2CID 25447826.
  10. ^ Faundes V, Jennings MD, Crilly S, Legraie S, Withers SE, Cuvertino S, et al. (February 2021). "Impaired eIF5A function causes a Mendelian disorder that is partially rescued in model systems by spermidine". Nature Communications. 12 (1): 833. doi:10.1038/s41467-021-21053-2. PMC 7864902. PMID 33547280.
  11. ^ "OMIM Entry - # 619376 - FAUNDES-BANKA SYNDROME; FABAS". omim.org. Retrieved 2022-01-03.

Further reading[]

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