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Phenotypes associated with this allele
Allele Symbol
Allele Name
Allele ID
Atrn+
wild type
MGI:2437953
Summary 2 genotypes
Jump to Allelic Composition Genetic Background Genotype ID
cx1
Atrnmg-3J/Atrn+
Pepddal/Pepddal
involves: C3H/HeJ * C3HeB/FeJ * CBA/J MGI:5605670
cx2
Atrnmg-3J/Atrn+
Pepddal/Pepd+
involves: C3H/HeJ * C3HeB/FeJ * CBA/J MGI:5605679


Genotype
MGI:5605670
cx1
Allelic
Composition
Atrnmg-3J/Atrn+
Pepddal/Pepddal
Genetic
Background
involves: C3H/HeJ * C3HeB/FeJ * CBA/J
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Atrnmg-3J mutation (2 available); any Atrn mutation (88 available)
Pepddal mutation (1 available); any Pepd mutation (35 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
integument
• mice homozygous for dark-like and heterozgyous for the mahogany 3 Jackson allele of attractin have a darker coat color than mice homozygous for dark-like and wildtype for attractin

pigmentation
• mice homozygous for dark-like and heterozgyous for the mahogany 3 Jackson allele of attractin have a darker coat color than mice homozygous for dark-like and wildtype for attractin

endocrine/exocrine glands
• at 3 months of age 13 out of 17 mice homozygous for dark-like on this background display significant vacuolation in the testes regardless of whether they are heterozgyous or wild-type for the mahogany 3 Jackson allele, and at 6 months of age this is increased to 9 out of 10 assessed

reproductive system
• at 3 months of age 13 out of 17 mice homozygous for dark-like on this background display significant vacuolation in the testes regardless of whether they are heterozgyous or wild-type for the mahogany 3 Jackson allele, and at 6 months of age this is increased to 9 out of 10 assessed

nervous system
• at 2-3 months of age no vacuoles are found in compound heterozgyotes, 2 of 5 dark-like homozygotes wild-type for attractin have vacuolation in multiple brain regions, while dark-like homozygotes heterozygous for mahogany 3 Jackson have a range of CNS vacuolation from undetectable to severe




Genotype
MGI:5605679
cx2
Allelic
Composition
Atrnmg-3J/Atrn+
Pepddal/Pepd+
Genetic
Background
involves: C3H/HeJ * C3HeB/FeJ * CBA/J
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Atrnmg-3J mutation (2 available); any Atrn mutation (88 available)
Pepddal mutation (1 available); any Pepd mutation (35 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
endocrine/exocrine glands
• indicative of an additive interaction of these alleles, both of two compound heterozygotes assessed at 3 months of age and 5 of 9 assessed at 6 months of age display vacuolation in the testes, although to a lesser degree than is found in dark-like homozygotes

reproductive system
• indicative of an additive interaction of these alleles, both of two compound heterozygotes assessed at 3 months of age and 5 of 9 assessed at 6 months of age display vacuolation in the testes, although to a lesser degree than is found in dark-like homozygotes





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