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Phenotypes associated with this allele
Allele Symbol
Allele Name
Allele ID
Myf5tm1Jae
targeted mutation 1, Rudolf Jaenisch
MGI:1857219
Summary 9 genotypes
Jump to Allelic Composition Genetic Background Genotype ID
hm1
Myf5tm1Jae/Myf5tm1Jae either: 129-Myf5tm1Jae or (involves: 129S4/SvJae * BALB/c) or (involves: 129S4/SvJae * C57BL/6) MGI:2175124
hm2
Myf5tm1Jae/Myf5tm1Jae involves: 129S4/SvJae MGI:2168259
hm3
Myf5tm1Jae/Myf5tm1Jae involves: 129S4/SvJae * C57BL/6J MGI:3713921
ht4
Myf5tm3.1Thbr/Myf5tm1Jae involves: 129S4/SvJae MGI:3817752
cx5
Myf5tm1Jae/Myf5+
Myf6tm1Wb/Myf6+
involves: 129S1/Sv * 129S4/SvJae MGI:3714407
cx6
Myf5tm1Jae/Myf5+
Myf6tm1Thbr/Myf6+
involves: 129S4/SvJae MGI:3714395
cx7
Myf5tm1Jae/Myf5+
Myf6tm1Eno/Myf6+
involves: 129S4/SvJae * 129S7/SvEvBrd MGI:3714469
cx8
Myf5tm1Jae/Myf5tm1Jae
Myod1tm1.1Glh/Myod1+
involves: 129/Sv * 129S4/SvJae * C57BL/6J MGI:3840224
cx9
Myf5tm1Jae/Myf5tm1Jae
Myod1tm1.1Glh/Myod1tm1.1Glh
involves: 129/Sv * 129S4/SvJae * C57BL/6J MGI:3840223


Genotype
MGI:2175124
hm1
Allelic
Composition
Myf5tm1Jae/Myf5tm1Jae
Genetic
Background
either: 129-Myf5tm1Jae or (involves: 129S4/SvJae * BALB/c) or (involves: 129S4/SvJae * C57BL/6)
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Myf5tm1Jae mutation (1 available); any Myf5 mutation (17 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging
• die immediately after birth

respiratory system
• unable to breathe

skeleton
• ribs do not attach to the sternum due to their truncation
• the sternum is completely ossified without sternebral segmentation
• absence of the major distal part of the ribs; the cranial rib stumps on both sides of the vertebral column end in dilated enlarged structures

embryo
• appearance of myotomal cells in early somites is delayed by several days

muscle
• organization of muscles in the anterior thoracic wall is disorganized, probably due to lack of ribs
• muscle-specific marker analysis indicates a delay in the development of the myotome




Genotype
MGI:2168259
hm2
Allelic
Composition
Myf5tm1Jae/Myf5tm1Jae
Genetic
Background
involves: 129S4/SvJae
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Myf5tm1Jae mutation (1 available); any Myf5 mutation (17 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
skeleton
• no contacts with the sternum are made because the ribs are short
• sternum is completely ossified
• mutants lack the distal parts of the ribs; ribs are shorter than in Myf6 homozygotes (J:31636)

muscle
• no myotomes are detected at E10.5




Genotype
MGI:3713921
hm3
Allelic
Composition
Myf5tm1Jae/Myf5tm1Jae
Genetic
Background
involves: 129S4/SvJae * C57BL/6J
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Myf5tm1Jae mutation (1 available); any Myf5 mutation (17 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
skeleton
• animals show extensive vertebral arch fusions compared to wild-type




Genotype
MGI:3817752
ht4
Allelic
Composition
Myf5tm3.1Thbr/Myf5tm1Jae
Genetic
Background
involves: 129S4/SvJae
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Myf5tm1Jae mutation (1 available); any Myf5 mutation (17 available)
Myf5tm3.1Thbr mutation (0 available); any Myf5 mutation (17 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
skeleton
N
• skeleton, including ribs is normal




Genotype
MGI:3714407
cx5
Allelic
Composition
Myf5tm1Jae/Myf5+
Myf6tm1Wb/Myf6+
Genetic
Background
involves: 129S1/Sv * 129S4/SvJae
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Myf5tm1Jae mutation (1 available); any Myf5 mutation (17 available)
Myf6tm1Wb mutation (1 available); any Myf6 mutation (19 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging
• double heterozygous mice in which the Myf5 and Myf6 alleles are on different chromosomes show severely reduced expression of Myf5 and die at birth due to respiratory distress

respiratory system

skeleton
• sternum shows irregular ossification of sternebrae
• none of the first seven ribs are attached to the sternum
• fusion of adjacent ribs
• short ribs; ribs are shorter than in wild-type or Myf6 homozygotes but longer than the stubs of Myf5 homozygotes

muscle
• myotomes are disorganized at E10.5




Genotype
MGI:3714395
cx6
Allelic
Composition
Myf5tm1Jae/Myf5+
Myf6tm1Thbr/Myf6+
Genetic
Background
involves: 129S4/SvJae
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Myf5tm1Jae mutation (1 available); any Myf5 mutation (17 available)
Myf6tm1Thbr mutation (0 available); any Myf6 mutation (19 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging
• double heterozygous mice that carry the Myf5 and Myf6 alleles on different chromosomes and express drastically reduced levels of Myf5 mRNA do not survive to weaning and when delivered by cesarean section at E18.5, the pups die within a few minutes after delivery

skeleton
• mutants lack the distal parts of the ribs
• the average rib length is between that of Myf6 and Myf5 homozygotes




Genotype
MGI:3714469
cx7
Allelic
Composition
Myf5tm1Jae/Myf5+
Myf6tm1Eno/Myf6+
Genetic
Background
involves: 129S4/SvJae * 129S7/SvEvBrd
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Myf5tm1Jae mutation (1 available); any Myf5 mutation (17 available)
Myf6tm1Eno mutation (0 available); any Myf6 mutation (19 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging
• 63% of double heterozygous mice, in which the Myf5 and Myf6 alleles are on different chromosomes and show severely reduced expression of Myf5, die immediately after birth; the rest survive

skeleton
• attachment failure of at least one rib to the sternum is seen in most mutants, although the identity of the affected rib(s) and the number of ribs affected varies
• abnormal ribs

muscle
• number of myocytes in the myotomes is reduced at E10.5 and the conformation of the myotome is abnormal




Genotype
MGI:3840224
cx8
Allelic
Composition
Myf5tm1Jae/Myf5tm1Jae
Myod1tm1.1Glh/Myod1+
Genetic
Background
involves: 129/Sv * 129S4/SvJae * C57BL/6J
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Myf5tm1Jae mutation (1 available); any Myf5 mutation (17 available)
Myod1tm1.1Glh mutation (0 available); any Myod1 mutation (23 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
muscle
• trunk musculature is disorganized compared to in wild-type mice
• expression of Myod1 is delayed at E10.5 compared to in wild-type mice
• however, the Pax3-mediated recovery of Myod1 is normal




Genotype
MGI:3840223
cx9
Allelic
Composition
Myf5tm1Jae/Myf5tm1Jae
Myod1tm1.1Glh/Myod1tm1.1Glh
Genetic
Background
involves: 129/Sv * 129S4/SvJae * C57BL/6J
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Myf5tm1Jae mutation (1 available); any Myf5 mutation (17 available)
Myod1tm1.1Glh mutation (0 available); any Myod1 mutation (23 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
muscle
• trunk musculature is disorganized compared to in wild-type mice
• expression of Myod1 is delayed at E10.5 compared to in wild-type mice
• however, the Pax3-mediated recovery of Myod1 is normal





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last database update
04/16/2024
MGI 6.23
The Jackson Laboratory