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Phenotypes associated with this allele
Allele Symbol
Allele Name
Allele ID
Extl3tm1.1Okam
targeted mutation 1.1, Hiroshi Okamoto
MGI:3844734
Summary 2 genotypes
Jump to Allelic Composition Genetic Background Genotype ID
hm1
Extl3tm1.1Okam/Extl3tm1.1Okam involves: 129P2/OlaHsd * ICR MGI:3844735
cn2
Extl3tm1.1Okam/Extl3tm1Okam
Tg(Ins2-cre)#Okam/0
involves: 129P2/OlaHsd * ICR MGI:4366326


Genotype
MGI:3844735
hm1
Allelic
Composition
Extl3tm1.1Okam/Extl3tm1.1Okam
Genetic
Background
involves: 129P2/OlaHsd * ICR
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Extl3tm1.1Okam mutation (0 available); any Extl3 mutation (37 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging




Genotype
MGI:4366326
cn2
Allelic
Composition
Extl3tm1.1Okam/Extl3tm1Okam
Tg(Ins2-cre)#Okam/0
Genetic
Background
involves: 129P2/OlaHsd * ICR
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Extl3tm1.1Okam mutation (0 available); any Extl3 mutation (37 available)
Extl3tm1Okam mutation (0 available); any Extl3 mutation (37 available)
Tg(Ins2-cre)#Okam mutation (0 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
endocrine/exocrine glands
• decreased beta-cell area relative to the whole pancreatic area (75%)
• no difference in the islet size
• decreased beta-cell number/total islet cell number ratio (80%) after 2 weeks of age
• beta-cells exist also in the most peripheral region of the islets after 2 weeks of age
• glucagonspositive alpha-cells are scattered in the central region after 2 weeks of age
• islets develop normally at birth
• decreased insulin response to 11.2 mM glucose (47%)
• decreased insulin response to 20 mM KCl (75%)

homeostasis/metabolism
• decreased insulin response to 11.2 mM glucose (47%)
• decreased insulin response to 20 mM KCl (75%)
• decreased plasma insulin levels after glucose loading
• significantly higher blood glucose levels in the glucose tolerance test
• no peripheral insulin resistance in the insulin tolerance test

cellular
• significantly decreased pancreatic islet beta-cell proliferation activity





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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
11/12/2024
MGI 6.24
The Jackson Laboratory