About   Help   FAQ
Phenotypes associated with this allele
Allele Symbol
Allele Name
Allele ID
Eif2ak4tm1.2Dron
targeted mutation 1.2, David Ron
MGI:3582154
Summary 3 genotypes
Jump to Allelic Composition Genetic Background Genotype ID
hm1
Eif2ak4tm1.2Dron/Eif2ak4tm1.2Dron 129S6/SvEvTac-Eif2ak4tm1.2Dron MGI:3804304
hm2
Eif2ak4tm1.2Dron/Eif2ak4tm1.2Dron involves: 129S6/SvEvTac MGI:3806279
hm3
Eif2ak4tm1.2Dron/Eif2ak4tm1.2Dron involves: 129S6/SvEvTac * C57BL/6 * CBA MGI:3709836


Genotype
MGI:3804304
hm1
Allelic
Composition
Eif2ak4tm1.2Dron/Eif2ak4tm1.2Dron
Genetic
Background
129S6/SvEvTac-Eif2ak4tm1.2Dron
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Eif2ak4tm1.2Dron mutation (3 available); any Eif2ak4 mutation (88 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
behavior/neurological
• homozygotes display impaired contextual fear conditioning but normal auditory fear conditioning
• homozygotes display impaired hippocampus-dependent spatial memory in a Morris water maze with repeated trials (strong conditioning) but improved spatial memory with a single trial (weak conditioning)

nervous system
• a single tetanus induces a robust and sustained late LTP unlike in wild-type mice where a single tetanus induces early LTP
• after repeated tetanic stimulation (4 trains at 100 Hz) the duration of late LTP is reduced, returning to baseline within 3 hours




Genotype
MGI:3806279
hm2
Allelic
Composition
Eif2ak4tm1.2Dron/Eif2ak4tm1.2Dron
Genetic
Background
involves: 129S6/SvEvTac
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Eif2ak4tm1.2Dron mutation (3 available); any Eif2ak4 mutation (88 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
behavior/neurological
• mice have much less of an aversion to diets lacking an essential amino acid
• mice consume 7.7% less leucine-deficient chow after 1 hour compared to wild-type mice that consume 28.8% less
• mice consume 9.4% less leucine-deficient chow after 4 hours compared to wild-type mice that consume 34.1% less
• similar responses are observed in threonine-deficient diet




Genotype
MGI:3709836
hm3
Allelic
Composition
Eif2ak4tm1.2Dron/Eif2ak4tm1.2Dron
Genetic
Background
involves: 129S6/SvEvTac * C57BL/6 * CBA
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Eif2ak4tm1.2Dron mutation (3 available); any Eif2ak4 mutation (88 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
immune system
• splenic CD19+ dendritic cells treated with CTLA4-immunoglobulin do not produce IFNalpha, indicating a defect in response to CD80/86 (B7) ligation; production induced by TLR9 stimulation is equivalent to that in wild-type
• splenic CD19+ dendritic cells do not secrete IFNalpha upon CTLA4-Ig treatement





Contributing Projects:
Mouse Genome Database (MGD), Gene Expression Database (GXD), Mouse Models of Human Cancer database (MMHCdb) (formerly Mouse Tumor Biology (MTB)), Gene Ontology (GO)
Citing These Resources
Funding Information
Warranty Disclaimer, Privacy Notice, Licensing, & Copyright
Send questions and comments to User Support.
last database update
04/23/2024
MGI 6.23
The Jackson Laboratory