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Phenotypes associated with this allele
Allele Symbol
Allele Name
Allele ID 		Or2b4tm3Mom
targeted mutation 3, Peter Mombaerts
MGI:3722374
Summary 1 genotype
Jump to Allelic Composition Genetic Background Genotype ID
ht1
 		Or2b4tm3Mom/Or2b4+ involves: 129P2/OlaHsd * C57BL/6 MGI:5613411


Genotype
MGI:5613411
ht1
Allelic
Composition		 Or2b4tm3Mom/Or2b4+
Genetic
Background		 involves: 129P2/OlaHsd * C57BL/6
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Or2b4tm3Mom mutation (1 available); any Or2b4 mutation (22 available)
♀ phenotype observed in females
♂ phenotype observed in males
N normal phenotype
craniofacial
abnormal olfactory sensory neuron morphology ( J:214042 )
• The olfactory sensory neurons that express this null reporter allele are found in a more basal position than normal in the main olfactory epithelium and the sensory organ

growth/size/body
abnormal olfactory sensory neuron morphology ( J:214042 )
• The olfactory sensory neurons that express this null reporter allele are found in a more basal position than normal in the main olfactory epithelium and the sensory organ
abnormal olfactory receptor morphology ( J:214042 )

nervous system
abnormal olfactory sensory neuron morphology ( J:214042 )
• The olfactory sensory neurons that express this null reporter allele are found in a more basal position than normal in the main olfactory epithelium and the sensory organ

respiratory system
abnormal olfactory sensory neuron morphology ( J:214042 )
• The olfactory sensory neurons that express this null reporter allele are found in a more basal position than normal in the main olfactory epithelium and the sensory organ

taste/olfaction
abnormal olfactory sensory neuron morphology ( J:214042 )
• The olfactory sensory neurons that express this null reporter allele are found in a more basal position than normal in the main olfactory epithelium and the sensory organ




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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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Send questions and comments to User Support. 		last database update
09/30/2025
MGI 6.24 		The Jackson Laboratory