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Phenotypes associated with this allele
Allele Symbol
Allele Name
Allele ID
Eif2ak2tm1Cwe
targeted mutation 1, Charles Weissmann
MGI:2182566
Summary 5 genotypes
Jump to Allelic Composition Genetic Background Genotype ID
hm1
Eif2ak2tm1Cwe/Eif2ak2tm1Cwe involves: 129 MGI:3698179
hm2
Eif2ak2tm1Cwe/Eif2ak2tm1Cwe involves: 129S/SvEv * C57BL/6 MGI:3039220
cx3
Eif2ak2tm1Cwe/Eif2ak2tm1Cwe
Rnaseltm1Slvm/Rnaseltm1Slvm
involves: 129P2/OlaHsd * 129S/SvEv * C57BL/6 MGI:3039029
cx4
Eif2ak2tm1Cwe/Eif2ak2tm1Cwe
NipblGt(RRS564)Byg/Nipbl+
involves: 129/Sv * 129P2/OlaHsd * C57BL/6J * CD-1 MGI:7491947
cx5
Eif2ak2tm1Cwe/Eif2ak2tm1Cwe
Hdac8tm1.2Eno/Y
involves: 129/Sv * 129S6/SvEvTac * C57BL/6J MGI:7491953


Genotype
MGI:3698179
hm1
Allelic
Composition
Eif2ak2tm1Cwe/Eif2ak2tm1Cwe
Genetic
Background
involves: 129
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Eif2ak2tm1Cwe mutation (2 available); any Eif2ak2 mutation (41 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
immune system
N
• dendritic cells in mutants show relatively normal induction of T cell stimulatory molecules and cytokine mRNAs when stimulated with poly(I:C) or LPS
• dendritic cells show essentially normal responses and maturation upon infection with NDV




Genotype
MGI:3039220
hm2
Allelic
Composition
Eif2ak2tm1Cwe/Eif2ak2tm1Cwe
Genetic
Background
involves: 129S/SvEv * C57BL/6
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Eif2ak2tm1Cwe mutation (2 available); any Eif2ak2 mutation (41 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
cellular
• proliferative responses of both CD4+ and CD8+ T-cells from sensitized mice is somewhat increased

immune system
• proliferative responses of both CD4+ and CD8+ T-cells from sensitized mice is somewhat increased
• exaggerated response to challenge after presensitization in contact hypersensitivity test
• effect can be transferred to naive mice using CD8+ cells from sensitized mice
• a 2 fold increase in Il4 production by CD44+ cells
• susceptibility to encephalomyocarditis virus tested
• response to infection and survival were similar to control mice; however, pretreatment of mice with IFNgamma failed to improve survival as it did in controls

hematopoietic system
• proliferative responses of both CD4+ and CD8+ T-cells from sensitized mice is somewhat increased




Genotype
MGI:3039029
cx3
Allelic
Composition
Eif2ak2tm1Cwe/Eif2ak2tm1Cwe
Rnaseltm1Slvm/Rnaseltm1Slvm
Genetic
Background
involves: 129P2/OlaHsd * 129S/SvEv * C57BL/6
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Eif2ak2tm1Cwe mutation (2 available); any Eif2ak2 mutation (41 available)
Rnaseltm1Slvm mutation (0 available); any Rnasel mutation (26 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
immune system
• susceptibility to encephalomyocarditis virus tested
• antiviral effect of interferon was suppressed even more than in the case of either single homozygote




Genotype
MGI:7491947
cx4
Allelic
Composition
Eif2ak2tm1Cwe/Eif2ak2tm1Cwe
NipblGt(RRS564)Byg/Nipbl+
Genetic
Background
involves: 129/Sv * 129P2/OlaHsd * C57BL/6J * CD-1
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Eif2ak2tm1Cwe mutation (2 available); any Eif2ak2 mutation (41 available)
NipblGt(RRS564)Byg mutation (0 available); any Nipbl mutation (124 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging
• viability is increased up to 63% for mutant mice homozygous for the mutation in Eif2ak2 compared to mutant mice wild-type for Eif2ak2 (~32% viability)

embryo
• increase in the junctional zone
• spongiotrophoblasts have more diploid DNA content at E14.5
• increased diploid DNA content at E14.5

skeleton
• ossification in the jawbone is improved compared to mutant mice wild-type for Eif2ak2

cellular
• spongiotrophoblasts and glycogen cells have more diploid DNA content at E14.5
• elevated gammaH2A.X signalling indicating decreased DNA repair and persistence of DNA damage in spongiotrophoblasts

homeostasis/metabolism
• elevated gammaH2A.X signalling indicating decreased DNA repair and persistence of DNA damage in spongiotrophoblasts




Genotype
MGI:7491953
cx5
Allelic
Composition
Eif2ak2tm1Cwe/Eif2ak2tm1Cwe
Hdac8tm1.2Eno/Y
Genetic
Background
involves: 129/Sv * 129S6/SvEvTac * C57BL/6J
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Eif2ak2tm1Cwe mutation (2 available); any Eif2ak2 mutation (41 available)
Hdac8tm1.2Eno mutation (0 available); any Hdac8 mutation (10 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging
• viability is increased up to 57% for mutant mice homozygous for the mutation in Eif2ak2 compared to mutant mice wild-type for Eif2ak2 (~30% viability)

limbs/digits/tail
• increase in forelimb length compared to mutant mice wild-type for Eif2ak2





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last database update
11/12/2024
MGI 6.24
The Jackson Laboratory