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Phenotypes associated with this allele
Allele Symbol
Allele Name
Allele ID
E2f3tm2.1Gle
targeted mutation 2.1, Gustavo Leone
MGI:3806814
Summary 6 genotypes
Jump to Allelic Composition Genetic Background Genotype ID
hm1
E2f3tm2.1Gle/E2f3tm2.1Gle FVB.129S6-E2f3tm2.1Gle MGI:3806835
hm2
E2f3tm2.1Gle/E2f3tm2.1Gle involves: 129S6/SvEvTac * FVB/N * NIH Black Swiss MGI:3806841
cx3
E2f1tm1Meg/E2f1tm1Meg
E2f2tm1Zubi/E2f2tm1Zubi
E2f3tm2.1Gle/E2f3tm2.1Gle
involves: 129 * FVB/N * NIH Black Swiss MGI:3806839
cx4
E2f2tm1Zubi/E2f2tm1Zubi
E2f3tm2.1Gle/E2f3tm2.1Gle
involves: 129S1/Sv * 129S6/SvEvTac * FVB/N * NIH Black Swiss MGI:3806843
cx5
E2f1tm1Meg/E2f1tm1Meg
E2f3tm2.1Gle/E2f3tm2.1Gle
involves: 129S4/SvJae * 129S6/SvEvTac * FVB/N * NIH Black Swiss MGI:3806844
cx6
E2f3tm2.1Gle/E2f3tm2.1Gle
E2f7tm1.1Gle/E2f7tm1.1Gle
E2f8tm1.1Gle/E2f8tm1.1Gle
involves: 129S6/SvEvTac MGI:5473265


Genotype
MGI:3806835
hm1
Allelic
Composition
E2f3tm2.1Gle/E2f3tm2.1Gle
Genetic
Background
FVB.129S6-E2f3tm2.1Gle
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
E2f3tm2.1Gle mutation (0 available); any E2f3 mutation (32 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging
N
• unlike mice lacking both isoforms, in mice lacking only the E2f3a isoform no significant embryonic lethality is seen




Genotype
MGI:3806841
hm2
Allelic
Composition
E2f3tm2.1Gle/E2f3tm2.1Gle
Genetic
Background
involves: 129S6/SvEvTac * FVB/N * NIH Black Swiss
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
E2f3tm2.1Gle mutation (0 available); any E2f3 mutation (32 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
adipose tissue
• in older mice compared to age-matched wild-type mice




Genotype
MGI:3806839
cx3
Allelic
Composition
E2f1tm1Meg/E2f1tm1Meg
E2f2tm1Zubi/E2f2tm1Zubi
E2f3tm2.1Gle/E2f3tm2.1Gle
Genetic
Background
involves: 129 * FVB/N * NIH Black Swiss
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
E2f1tm1Meg mutation (2 available); any E2f1 mutation (25 available)
E2f2tm1Zubi mutation (1 available); any E2f2 mutation (29 available)
E2f3tm2.1Gle mutation (0 available); any E2f3 mutation (32 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging

cellular
• in MEFs after 5 and 6 days in culture compared to littermate-derived controls




Genotype
MGI:3806843
cx4
Allelic
Composition
E2f2tm1Zubi/E2f2tm1Zubi
E2f3tm2.1Gle/E2f3tm2.1Gle
Genetic
Background
involves: 129S1/Sv * 129S6/SvEvTac * FVB/N * NIH Black Swiss
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
E2f2tm1Zubi mutation (1 available); any E2f2 mutation (29 available)
E2f3tm2.1Gle mutation (0 available); any E2f3 mutation (32 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
normal phenotype
• born at the expected frequency, normal birth weights and mature without obvious defects




Genotype
MGI:3806844
cx5
Allelic
Composition
E2f1tm1Meg/E2f1tm1Meg
E2f3tm2.1Gle/E2f3tm2.1Gle
Genetic
Background
involves: 129S4/SvJae * 129S6/SvEvTac * FVB/N * NIH Black Swiss
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
E2f1tm1Meg mutation (2 available); any E2f1 mutation (25 available)
E2f3tm2.1Gle mutation (0 available); any E2f3 mutation (32 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging
• only a few mice survive beyond 1 month of age
• most die within the first month of life

adipose tissue
N
• despite loss of white fat, brown fat is relatively unaffected
• by 3 weeks of age all white adipose deposits are absent

behavior/neurological
N
• no defect in eating behavior is detected, despite the absence of white fat

digestive/alimentary system
N
• no defect in fat absorption is detected, despite the absence of white fat

growth/size/body
• severely runted by 3 weeks of age

homeostasis/metabolism

cellular
• by 3 weeks of age the proliferative index in most tissues is reduced

reproductive system
• lack a well-developed corpus luteum
• the few females that reach reproductive age are infertile
• the few males that reach reproductive age are infertile

skeleton
• at P21, long bone growth plates are severely dysplastic with many cells having mega-nuclei

endocrine/exocrine glands
• the outer cortex lacks a functional zona fasciculata
• lack a well-developed corpus luteum

nervous system
• by 21 days of age there is a relative increase in the brain weight to body weight ratio

respiratory system
• decrease in the branching of the epithelium




Genotype
MGI:5473265
cx6
Allelic
Composition
E2f3tm2.1Gle/E2f3tm2.1Gle
E2f7tm1.1Gle/E2f7tm1.1Gle
E2f8tm1.1Gle/E2f8tm1.1Gle
Genetic
Background
involves: 129S6/SvEvTac
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
E2f3tm2.1Gle mutation (0 available); any E2f3 mutation (32 available)
E2f7tm1.1Gle mutation (0 available); any E2f7 mutation (32 available)
E2f8tm1.1Gle mutation (0 available); any E2f8 mutation (34 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
embryo
N
• placentas appear normal with well-organized labyrinthine architecture and vasculature, and are functional as fetuses lack signs of acute stress response or ectopic cell apoptosis
• live embryos/fetuses are recovered at all stages analyzed, including at birth





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last database update
04/30/2024
MGI 6.23
The Jackson Laboratory