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Phenotypes associated with this allele
Allele Symbol
Allele Name
Allele ID
Sun1+
wild type
MGI:2441046
Summary 2 genotypes
Jump to Allelic Composition Genetic Background Genotype ID
cx1
Sun1tm1Mhan/Sun1+
Sun2tm1Mhan/Sun2tm1Mhan
involves: 129S6/SvEvTac MGI:3850094
cx2
Sun1tm1.1Ktj/Sun1+
Sun2tm1.1Cyh/Sun2tm1.1Cyh
involves: 129/Sv * C57BL/6 * C57BL/6N MGI:5824548


Genotype
MGI:3850094
cx1
Allelic
Composition
Sun1tm1Mhan/Sun1+
Sun2tm1Mhan/Sun2tm1Mhan
Genetic
Background
involves: 129S6/SvEvTac
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Sun1tm1Mhan mutation (1 available); any Sun1 mutation (63 available)
Sun2tm1Mhan mutation (1 available); any Sun2 mutation (41 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
muscle
• 49% of muscle cells have no nuclei beneath neuromuscular junctions unlike in wild-type mice




Genotype
MGI:5824548
cx2
Allelic
Composition
Sun1tm1.1Ktj/Sun1+
Sun2tm1.1Cyh/Sun2tm1.1Cyh
Genetic
Background
involves: 129/Sv * C57BL/6 * C57BL/6N
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Sun1tm1.1Ktj mutation (0 available); any Sun1 mutation (63 available)
Sun2tm1.1Cyh mutation (0 available); any Sun2 mutation (41 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
nervous system
N
• at P30, mice show grossly normal cerebellar size relative to wild-type controls
• at P14, 32% of Syne2 is localized at the nuclear membrane of Purkinje cells relative to 44% in wild-type cells

growth/size/body
N
• at 3-4 months of age, average body weight is similar to that of wild-type controls

behavior/neurological
N
• adult mice exhibit normal motor coordination, as assessed by rotarod performance and footprint analysis





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last database update
01/06/2026
MGI 6.24
The Jackson Laboratory