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Eukaryotic translation initiation factor 2, subunit 2 beta, 38kDa

eIF2B, eukaryotic initiation factor 2B, eIF2beta
Eukaryotic translation initiation factor 2 (EIF-2) functions in the early steps of protein synthesis by forming a ternary complex with GTP and initiator tRNA and binding to a 40S ribosomal subunit. EIF-2 is composed of three subunits, alpha, beta, and gamma, with the protein encoded by this gene representing the beta subunit. The beta subunit catalyzes the exchange of GDP for GTP, which recycles the EIF-2 complex for another round of initiation. [provided by RefSeq, Jul 2008] (from NCBI)
Top mentioned proteins: CAN, ACID, eIF4E, eIF2alpha, CLE
Papers on eIF2B
A Japanese girl with an early-infantile onset vanishing white matter disease resembling Cree leukoencephalopathy.
New
Osaka et al., Yokohama, Japan. In Brain Dev, 27 Nov 2014
UNLABELLED: Vanishing white matter disease (VWM)/childhood ataxia with central hypomyelination (CACH) is an autosomal recessive leukoencephalopathy caused by mutations in one of five genes, EIF2B1-5, encoding the 5 subunits of eukaryotic translation initiation factor 2B (eIF2B).
Impaired eukaryotic translation initiation factor 2B activity specifically in oligodendrocytes reproduces the pathology of vanishing white matter disease in mice.
New
Lin et al., Cambridge, United Kingdom. In J Neurosci, Oct 2014
Vanishing white matter disease (VWMD) is an inherited autosomal-recessive hypomyelinating disease caused by mutations in eukaryotic translation initiation factor 2B (eIF2B).
A new function and complexity for protein translation initiation factor eIF2B.
New
Pavitt et al., Manchester, United Kingdom. In Cell Cycle, Oct 2014
eIF2B is critical for regulation of protein synthesis via a conserved mechanism of phosphorylation of eIF2, which converts eIF2 from a substrate to an inhibitor of eIF2B GEF.
Vanishing white matter disease presenting as opsoclonus myoclonus syndrome in childhood--a case report and review of the literature.
New
Ray Chaudhuri et al., London, United Kingdom. In Pediatr Neurol, Jul 2014
BACKGROUND: Vanishing white matter disease is caused by mutations of the eukaryotic translation initiation factor 2B (EIF2B) and is a prevalent cause of inherited childhood leukoencephalopathy.
Novel mutations identified in EIF2B5 gene in Kashmiri patients as susceptibility factor for multiple sclerosis.
New
Haq et al., In Indian J Biochem Biophys, Apr 2014
Most of the studies have shown that it results from the defects during protein synthesis, with the gene defects in EIF2B 1-5, encoding the five subunits of eukaryotic translation initiation factor 2B (elF2B) a, 3, y, 6 and a, respectively.
Vanishing white matter disease in a spanish population.
Review
New
Armstrong-Moron et al., Barcelona, Spain. In J Cent Nerv Syst Dis, Dec 2013
It has been associated with mutations in genes encoding eukaryotic translation initiation factor (eIF2B).
Leukodystrophies with astrocytic dysfunction.
Review
Rodriguez, Paris, France. In Handb Clin Neurol, 2012
CACH/VWM is due to mutations in one of the five subunits of EIF2B which compromise the astrocytic lineage.
Vanishing white matter disease caused by EIF2B2 mutation with the presentation of an adrenoleukodystrophy phenotype.
GeneRIF
Alkuraya et al., Riyadh, Saudi Arabia. In Gene, 2012
analysis of vanishing white matter disease caused by EIF2B2 mutation with the presentation of an adrenoleukodystrophy phenotype [case report]
Toll-like receptor activation suppresses ER stress factor CHOP and translation inhibition through activation of eIF2B.
Impact
Tabas et al., New York City, United States. In Nat Cell Biol, 2012
As p-eIF2α decreases the functional interaction of eIF2 with eIF2B, a guanine nucleotide exchange factor (GEF), we explored the hypothesis that TLR-TRIF signalling activates eIF2B GEF activity to counteract the effects of p-eIF2α.
Functional elements in initiation factors 1, 1A, and 2β discriminate against poor AUG context and non-AUG start codons.
GeneRIF
Hinnebusch et al., Bethesda, United States. In Mol Cell Biol, 2011
eIF1 autoregulates translation in yeast and discrimination against poor sequence context in vivo depends on specific domains and residues in eIF1, eIF1A, and eIF2beta
Recent progress toward understanding the molecular mechanisms that regulate skeletal muscle mass.
Review
Hornberger et al., Madison, United States. In Cell Signal, 2011
Not surprisingly, many of these molecules are intimately involved in the regulation of protein synthesis and protein degradation [e.g. the mammalian target of rapamycin (mTOR), eukaryotic initiation factor 2B (eIF2B), eukaryotic initiation factor 3f (eIF3f) and the forkhead box O (FoxO) transcription factors].
[Vanishing white matter disease: a stress-related leukodystrophy].
GeneRIF
Weber et al., In Nervenarzt, 2011
A mutation .626G>A [p.Arg209Gln] in exon 7 and c.1399C>T [p.Arg467Trp] in exon 13 of the EIF2B4-Gens.
The alpha subunit of eukaryotic initiation factor 2B (eIF2B) is required for eIF2-mediated translational suppression of vesicular stomatitis virus.
GeneRIF
Barber et al., Miami, United States. In J Virol, 2011
These data emphasize the importance of eIF2Balpha in mediating the eIF2 kinase translation-inhibitory activity and may provide insight into the complex nature of vesiculovirus oncolysis.
Eukaryotic type translation initiation factor 2: structure-functional aspects.
Review
Garber et al., Moscow, Russia. In Biochemistry (mosc), 2011
There are also new data on initiation factors eIF5 and eIF2B that directly interact with eIF2 and control its participation in nucleotide exchange.
A point mutation in translation initiation factor eIF2B leads to function--and time-specific changes in brain gene expression.
GeneRIF
Elroy-Stein et al., Tel Aviv-Yafo, Israel. In Plos One, 2010
A point mutation in translation initiation factor eIF2B leads to Vanishing White Matter disease.
Leukoencephalopathy with vanishing white matter: a review.
Review
van der Knaap et al., Amsterdam, Netherlands. In J Neuropathol Exp Neurol, 2010
Vanishing white matter is caused by mutations in any of the genes encoding the 5 subunits of the eukaryotic translation initiation factor 2B (eIF2B), EIF2B1 through EIF2B5.
eIF5 has GDI activity necessary for translational control by eIF2 phosphorylation.
Impact
Pavitt et al., Manchester, United Kingdom. In Nature, 2010
Second we show that eIF5 is a critical component of the eIF2(alphaP) regulatory complex that inhibits the activity of the guanine-nucleotide exchange factor (GEF) eIF2B.
Vanishing white matter disease.
Review
Impact
Scheper et al., Amsterdam, Netherlands. In Lancet Neurol, 2006
The basic defect of this striking disease resides in either one of the five subunits of eukaryotic translation initiation factor eIF2B. eIF2B is essential in all cells of the body for protein synthesis and its regulation under different stress conditions.
EIF2B5 mutations compromise GFAP+ astrocyte generation in vanishing white matter leukodystrophy.
Impact
Pröschel et al., Rochester, United States. In Nat Med, 2005
Vanishing white matter disease (VWM) is a heritable leukodystrophy linked to mutations in translation initiation factor 2B (eIF2B).
Defective translational control facilitates vesicular stomatitis virus oncolysis.
Impact
Barber et al., Miami, United States. In Cancer Cell, 2004
Nevertheless, eIF2B-mediated guanine nucleotide exchange activity downstream of eIF2 was frequently aberrant in transformed cells, neutralizing eIF2alpha phosphorylation and permitting VSV mRNA translation.
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