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Phenotypes Associated with This Genotype
Genotype
MGI:4456088
Allelic
Composition
Actbtm3.1(Sirt1)Npa/Actb+
Sirt1tm1Mcby/Sirt1tm1Mcby
Genetic
Background
involves: 129S1/Sv * 129X1/SvJ * C57BL/6 * C57BL/6J
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Actbtm3.1(Sirt1)Npa mutation (1 available); any Actb mutation (55 available)
Sirt1tm1Mcby mutation (2 available); any Sirt1 mutation (83 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
reproductive system
N
• unlike Sirt1tm1Mcby homozygotes, mice are fertile

growth/size/body
N
• unlike Sirt1tm1Mcby homozygotes, mice exhibit normal body size and weight

vision/eye
N
• unlike Sirt1tm1Mcby homozygotes, eyelids open


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
01/06/2026
MGI 6.24
The Jackson Laboratory