Translation initiation factor eIF-2B subunit beta is a protein that in humans is encoded by the EIF2B2 gene.[5][6]

EIF2B2
Identifiers
AliasesEIF2B2, EIF-2Bbeta, EIF2B, eukaryotic translation initiation factor 2B subunit beta, EIF2Bbeta
External IDsOMIM: 606454; MGI: 2145118; HomoloGene: 6507; GeneCards: EIF2B2; OMA:EIF2B2 - orthologs
Orthologs
SpeciesHumanMouse
Entrez
Ensembl
UniProt
RefSeq (mRNA)

NM_014239

NM_145445

RefSeq (protein)

NP_055054

NP_663420

Location (UCSC)Chr 14: 75 – 75.01 MbChr 12: 85.27 – 85.27 Mb
PubMed search[3][4]
Wikidata
View/Edit HumanView/Edit Mouse

Function

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Eukaryotic initiation factor-2B (EIF2B) is a GTP exchange protein essential for protein synthesis. It consists of alpha (EIF2B1; MIM 606686), beta (EIF2B2), gamma (EIF2B3; MIM 606273), delta (EIF2B4; MIM 606687), and epsilon (EIF2B5; MIM 603945) subunits. EIF2B activates its EIF2 (see MIM 603907) substrate by exchanging EIF2-bound GDP for GTP.[6]

Interactions

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EIF2B2 has been shown to interact with EIF2B5[7] and NCK1.[8]

References

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  1. ^ a b c GRCh38: Ensembl release 89: ENSG00000119718Ensembl, May 2017
  2. ^ a b c GRCm38: Ensembl release 89: ENSMUSG00000004788Ensembl, 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. ^ Yang W, Hinnebusch AG (December 1996). "Identification of a regulatory subcomplex in the guanine nucleotide exchange factor eIF2B that mediates inhibition by phosphorylated eIF2". Mol Cell Biol. 16 (11): 6603–16. doi:10.1128/MCB.16.11.6603. PMC 231662. PMID 8887689.
  6. ^ a b "Entrez Gene: EIF2B2 eukaryotic translation initiation factor 2B, subunit 2 beta, 39kDa".
  7. ^ Anthony TG, Fabian JR, Kimball SR, Jefferson LS (June 2000). "Identification of domains within the epsilon-subunit of the translation initiation factor eIF2B that are necessary for guanine nucleotide exchange activity and eIF2B holoprotein formation". Biochim. Biophys. Acta. 1492 (1): 56–62. doi:10.1016/S0167-4781(00)00062-2. PMID 10858531.
  8. ^ Kebache S, Zuo D, Chevet E, Larose L (April 2002). "Modulation of protein translation by Nck-1". Proc. Natl. Acad. Sci. U.S.A. 99 (8): 5406–5411. Bibcode:2002PNAS...99.5406K. doi:10.1073/pnas.082483399. PMC 122782. PMID 11959995.

Further reading

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