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Phenotypes associated with this allele
Allele Symbol
Allele Name
Allele ID
Myf5tm1Tajb
targeted mutation 1, Shahragim Tajbakhsh
MGI:3055340
Summary 4 genotypes
Jump to Allelic Composition Genetic Background Genotype ID
hm1
Myf5tm1Tajb/Myf5tm1Tajb involves: 129S2/SvPas MGI:3850157
hm2
Myf5tm1Tajb/Myf5tm1Tajb involves: 129/Sv * C57BL/6 * DBA/2 MGI:3055416
cx3
Myf5tm1Tajb/Myf5tm1Tajb
Pax7tm1.1Tajb/Pax7tm1.1Tajb
involves: 129S2/SvPas MGI:3850159
cx4
Myf5tm1Tajb/Myf5tm1Tajb
Myod1tm1Jae/Myod1tm1Jae
involves: 129/Sv * C57BL/6 * DBA/2 MGI:3055418


Genotype
MGI:3850157
hm1
Allelic
Composition
Myf5tm1Tajb/Myf5tm1Tajb
Genetic
Background
involves: 129S2/SvPas
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Myf5tm1Tajb mutation (0 available); any Myf5 mutation (17 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
muscle
• the extraocular muscle anlage is absent in some mice and severely reduced compared to in wild-type mice

vision/eye
• the extraocular muscle anlage is absent in some mice and severely reduced compared to in wild-type mice




Genotype
MGI:3055416
hm2
Allelic
Composition
Myf5tm1Tajb/Myf5tm1Tajb
Genetic
Background
involves: 129/Sv * C57BL/6 * DBA/2
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Myf5tm1Tajb mutation (0 available); any Myf5 mutation (17 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
muscle
• muscle progenitor cells are abnormally located along the epaxial-most and hypaxial-most dermomyotome lips
• at E10 early myotome is missing
• dorsal muscles are absent

cellular
• muscle progenitor cells are abnormally located along the epaxial-most and hypaxial-most dermomyotome lips




Genotype
MGI:3850159
cx3
Allelic
Composition
Myf5tm1Tajb/Myf5tm1Tajb
Pax7tm1.1Tajb/Pax7tm1.1Tajb
Genetic
Background
involves: 129S2/SvPas
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Myf5tm1Tajb mutation (0 available); any Myf5 mutation (17 available)
Pax7tm1.1Tajb mutation (0 available); any Pax7 mutation (38 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
muscle
N
• pharyngeal arch-derived muscles are present
• compared to in Myf5tm1Tajb homozygotes

vision/eye
• compared to in Myf5tm1Tajb homozygotes




Genotype
MGI:3055418
cx4
Allelic
Composition
Myf5tm1Tajb/Myf5tm1Tajb
Myod1tm1Jae/Myod1tm1Jae
Genetic
Background
involves: 129/Sv * C57BL/6 * DBA/2
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Myf5tm1Tajb mutation (0 available); any Myf5 mutation (17 available)
Myod1tm1Jae mutation (2 available); any Myod1 mutation (23 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging
• only the double homozygous mutants display postnatal lethality

muscle
• skeletal muscle differentiation is seen at E12.5 however myogenesis is still severely impaired such that mutants essentially lack skeletal muscle at birth
• mutants essentially lack skeletal muscle throughout the body including the head





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)
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last database update
12/10/2024
MGI 6.24
The Jackson Laboratory