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Phenotypes Associated with This Genotype
Genotype
MGI:6155741
Allelic
Composition
Or8a1tm42(Mc4r)Mom/Or8a1tm42(Mc4r)Mom
Genetic
Background
B6;129P2-Or8a1tm42(Mc4r)Mom/MomJ
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Mouse lines carrying:
Or8a1tm42(Mc4r)Mom mutation (1 available); any Or8a1 mutation (69 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
craniofacial
• although there is monoallelic expression of this substution allele and the expressed receptor responds to its specific agonist, Ro27-3225, but not OLFR151 agonists, 32% of the olfactory sensory neurons expressing this allele have an immature phenotype, being OMP negative and GAP43 positive
• compared with GFP-tagged endogenous olfactory receptor 151 homozygotes, which show expression on 2928 +/- 152 olfactory sensory neurons, only 1013 +/- 92 olfactory sensory neurons express this substitution allele, and the glomeruli they form are much smaller than those formed by normal OLFR151-expressing olfactory sensory neurons

growth/size/body
• although there is monoallelic expression of this substution allele and the expressed receptor responds to its specific agonist, Ro27-3225, but not OLFR151 agonists, 32% of the olfactory sensory neurons expressing this allele have an immature phenotype, being OMP negative and GAP43 positive
• compared with GFP-tagged endogenous olfactory receptor 151 homozygotes, which show expression on 2928 +/- 152 olfactory sensory neurons, only 1013 +/- 92 olfactory sensory neurons express this substitution allele, and the glomeruli they form are much smaller than those formed by normal OLFR151-expressing olfactory sensory neurons

nervous system
• although there is monoallelic expression of this substution allele and the expressed receptor responds to its specific agonist, Ro27-3225, but not OLFR151 agonists, 32% of the olfactory sensory neurons expressing this allele have an immature phenotype, being OMP negative and GAP43 positive
• compared with GFP-tagged endogenous olfactory receptor 151 homozygotes, which show expression on 2928 +/- 152 olfactory sensory neurons, only 1013 +/- 92 olfactory sensory neurons express this substitution allele, and the glomeruli they form are much smaller than those formed by normal OLFR151-expressing olfactory sensory neurons

respiratory system
• although there is monoallelic expression of this substution allele and the expressed receptor responds to its specific agonist, Ro27-3225, but not OLFR151 agonists, 32% of the olfactory sensory neurons expressing this allele have an immature phenotype, being OMP negative and GAP43 positive
• compared with GFP-tagged endogenous olfactory receptor 151 homozygotes, which show expression on 2928 +/- 152 olfactory sensory neurons, only 1013 +/- 92 olfactory sensory neurons express this substitution allele, and the glomeruli they form are much smaller than those formed by normal OLFR151-expressing olfactory sensory neurons

taste/olfaction
• although there is monoallelic expression of this substution allele and the expressed receptor responds to its specific agonist, Ro27-3225, but not OLFR151 agonists, 32% of the olfactory sensory neurons expressing this allele have an immature phenotype, being OMP negative and GAP43 positive
• compared with GFP-tagged endogenous olfactory receptor 151 homozygotes, which show expression on 2928 +/- 152 olfactory sensory neurons, only 1013 +/- 92 olfactory sensory neurons express this substitution allele, and the glomeruli they form are much smaller than those formed by normal OLFR151-expressing olfactory sensory neurons


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
03/25/2025
MGI 6.24
The Jackson Laboratory