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Phenotypes associated with this allele
Allele Symbol
Allele Name
Allele ID
Htttm3Mem
targeted mutation 3, Marcy E MacDonald
MGI:1861699
Summary 5 genotypes
Jump to Allelic Composition Genetic Background Genotype ID
hm1
Htttm3Mem/Htttm3Mem involves: 129S1/Sv * 129X1/SvJ * C57BL/6 MGI:3698276
hm2
Htttm3Mem/Htttm3Mem involves: 129S/SvEv * 129S1/Sv * 129X1/SvJ * CD-1 MGI:3698002
ht3
Htttm1Mem/Htttm3Mem involves: 129S/SvEv * 129S1/Sv * 129X1/SvJ * CD-1 MGI:3698009
cx4
Fan1em2Mem/Fan1em2Mem
Htttm3Mem/Htt+
involves: 129S1/Sv * 129X1/SvJ * C57BL/6J MGI:6489858
cx5
Fan1em2Mem/Fan1+
Htttm3Mem/Htt+
involves: 129S1/Sv * 129X1/SvJ * C57BL/6J MGI:6489859


Genotype
MGI:3698276
hm1
Allelic
Composition
Htttm3Mem/Htttm3Mem
Genetic
Background
involves: 129S1/Sv * 129X1/SvJ * C57BL/6
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Htttm3Mem mutation (1 available); any Htt mutation (177 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
nervous system
N
• unlike other Hdh alleles that are models for Huntington Disease, homozygotes show no change in striatal mitochondrial sensitivity to calcium in the brain, thus displaying normal striatal and cortical calcium sensitivity

Mouse Models of Human Disease
DO ID OMIM ID(s) Ref(s)
NOT Huntington's disease DOID:12858 OMIM:143100
J:99425




Genotype
MGI:3698002
hm2
Allelic
Composition
Htttm3Mem/Htttm3Mem
Genetic
Background
involves: 129S/SvEv * 129S1/Sv * 129X1/SvJ * CD-1
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Htttm3Mem mutation (1 available); any Htt mutation (177 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
normal phenotype
• homozygotes are indistinguishable from controls in appearance and behavior, or by gross and microscopic examination of the brain, at 6 months of age

Mouse Models of Human Disease
DO ID OMIM ID(s) Ref(s)
NOT Huntington's disease DOID:12858 OMIM:143100
J:44391




Genotype
MGI:3698009
ht3
Allelic
Composition
Htttm1Mem/Htttm3Mem
Genetic
Background
involves: 129S/SvEv * 129S1/Sv * 129X1/SvJ * CD-1
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Htttm1Mem mutation (1 available); any Htt mutation (177 available)
Htttm3Mem mutation (1 available); any Htt mutation (177 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
normal phenotype
• appear normal; none display abnormal behaviors at 6 months of age




Genotype
MGI:6489858
cx4
Allelic
Composition
Fan1em2Mem/Fan1em2Mem
Htttm3Mem/Htt+
Genetic
Background
involves: 129S1/Sv * 129X1/SvJ * C57BL/6J
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Fan1em2Mem mutation (0 available); any Fan1 mutation (98 available)
Htttm3Mem mutation (1 available); any Htt mutation (177 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
cellular
• some expansion of the Htt CAG triplet repeats in striatum and liver at 8 months of age




Genotype
MGI:6489859
cx5
Allelic
Composition
Fan1em2Mem/Fan1+
Htttm3Mem/Htt+
Genetic
Background
involves: 129S1/Sv * 129X1/SvJ * C57BL/6J
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Fan1em2Mem mutation (0 available); any Fan1 mutation (98 available)
Htttm3Mem mutation (1 available); any Htt mutation (177 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
cellular
• expansion of the Htt CAG triplet repeats in striatum and liver at 8 months of age





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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
08/02/2024
MGI 6.24
The Jackson Laboratory