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Phenotypes associated with this allele
Allele Symbol
Allele Name
Allele ID
Tubb4atm1(KOMP)Wtsi
targeted mutation 1, Wellcome Trust Sanger Institute
MGI:4419785
Summary 3 genotypes
Jump to Allelic Composition Genetic Background Genotype ID
hm1
Tubb4atm1(KOMP)Wtsi/Tubb4atm1(KOMP)Wtsi involves: C57BL/6N * FVB/N MGI:6888386
ht2
Tubb4aJit/Tubb4atm1(KOMP)Wtsi involves: C57BL/6 * C57BL/6N * FVB/N MGI:6888388
cx3
Tubb4atm1(KOMP)Wtsi/Tubb4atm1(KOMP)Wtsi
Tubb4btm2b(EUCOMM)Wtsi/Tubb4btm2b(EUCOMM)Wtsi
involves: C57BL/6 * FVB MGI:7593963


Genotype
MGI:6888386
hm1
Allelic
Composition
Tubb4atm1(KOMP)Wtsi/Tubb4atm1(KOMP)Wtsi
Genetic
Background
involves: C57BL/6N * FVB/N
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Tubb4atm1(KOMP)Wtsi mutation (1 available); any Tubb4a mutation (30 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging
N
• mice exhibit a normal lifespan

behavior/neurological
N
• mice do not develop tremulous motor phenotypes or ataxia at advanced age and show no differences in rotarod performance or grip strength up to 1 year




Genotype
MGI:6888388
ht2
Allelic
Composition
Tubb4aJit/Tubb4atm1(KOMP)Wtsi
Genetic
Background
involves: C57BL/6 * C57BL/6N * FVB/N
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Tubb4aJit mutation (0 available); any Tubb4a mutation (30 available)
Tubb4atm1(KOMP)Wtsi mutation (1 available); any Tubb4a mutation (30 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging
• mice survive up to approximately 14 weeks

behavior/neurological

nervous system
• mice show progressive degeneration of granule cell neurons such that the inner granule layer is largely devoid of granule cell neurons at P48
• P95 mice have severely atrophic cerebellum with the inner granule layer largely devoid of granule cell neurons at P48
• however, cerebellar phenotypes are less severe than in homozygous Tubb4aJit mice
• reduction in white matter tracts such as corpus callosum, anterior commissures, and striatal fascicles at P95
• mice show progressive degeneration of myelin with reduced myelin at P48 and P95, however reduction in myelin is not as severe as in in homozygous Tubb4aJit mice
• cerebellum is severely demyelinated at P95




Genotype
MGI:7593963
cx3
Allelic
Composition
Tubb4atm1(KOMP)Wtsi/Tubb4atm1(KOMP)Wtsi
Tubb4btm2b(EUCOMM)Wtsi/Tubb4btm2b(EUCOMM)Wtsi
Genetic
Background
involves: C57BL/6 * FVB
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Tubb4atm1(KOMP)Wtsi mutation (1 available); any Tubb4a mutation (30 available)
Tubb4btm2b(EUCOMM)Wtsi mutation (0 available); any Tubb4b mutation (18 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
cellular
• severe truncation of cilia on multi-ciliated cells although occasional longer cilia are seen
• no cilia display the symmetric 9 microtuble doublet axonemes, all show the presence of singlets

respiratory system
• severe truncation of cilia on multi-ciliated cells although occasional longer cilia are seen
• no cilia display the symmetric 9 microtuble doublet axonemes, all show the presence of singlets





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
05/07/2024
MGI 6.23
The Jackson Laboratory