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Phenotypes associated with this allele
Allele Symbol
Allele Name
Allele ID
Npbwr1tm1Rck
targeted mutation 1 Jeffrey M Friedman
MGI:3522352
Summary 3 genotypes
Jump to Allelic Composition Genetic Background Genotype ID
hm1
Npbwr1tm1Rck/Npbwr1tm1Rck involves: 129P/Ola * C57BL/6J MGI:3526885
cx2
Npbwr1tm1Rck/Npbwr1tm1Rck
Lepob/Lepob
involves: 129P/Ola * C57BL/6J MGI:3526896
cx3
Ay/a
Npbwr1tm1Rck/Npbwr1tm1Rck
involves: 129P/Ola * C57BL/6J MGI:3526898


Genotype
MGI:3526885
hm1
Allelic
Composition
Npbwr1tm1Rck/Npbwr1tm1Rck
Genetic
Background
involves: 129P/Ola * C57BL/6J
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Npbwr1tm1Rck mutation (0 available); any Npbwr1 mutation (21 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
behavior/neurological
• food intake was increased by 10% in 24 week old males
• males had decreased spontaneous locomotor activity

growth/size/body
• by 10 weeks of age, males but not females showed a significant increase in body weight that became evident throughout adulthood and was even more pronounced by 52 weeks of age
• males fed a high-fat diet showed a significant increase in body weight at an earlier age than controls
• pale and enlarged liver in 52 week old males

homeostasis/metabolism
• males fed a high-fat diet showed a significant increase in body weight at an earlier age than controls
• normal glucose levels at 24 weeks of age, however by 52 weeks of age, males were hyperglycemic
• slight increase in insulin levels at 24 weeks of age and became hyperinsulinemic at 52 weeks of age
• higher leptin levels at 24 weeks of age and became significantly hyperleptinemic at 52 weeks of age
• males had decreased resting oxygen consumption and decreased carbon dioxide production
• higher total body lipid mass at 24 and 52 weeks of age than wild-type

liver/biliary system
• pale and enlarged liver in 52 week old males
• 52 week old males exhibited fatty liver




Genotype
MGI:3526896
cx2
Allelic
Composition
Npbwr1tm1Rck/Npbwr1tm1Rck
Lepob/Lepob
Genetic
Background
involves: 129P/Ola * C57BL/6J
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Lepob mutation (5 available); any Lep mutation (19 available)
Npbwr1tm1Rck mutation (0 available); any Npbwr1 mutation (21 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
growth/size/body
• male double homozygotes were more obese than single homozygous Lepob mice whereas females weighed the same as homozygous Lepob females




Genotype
MGI:3526898
cx3
Allelic
Composition
Ay/a
Npbwr1tm1Rck/Npbwr1tm1Rck
Genetic
Background
involves: 129P/Ola * C57BL/6J
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
a mutation (229 available); any a mutation (463 available)
Ay mutation (12 available); any a mutation (463 available)
Npbwr1tm1Rck mutation (0 available); any Npbwr1 mutation (21 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
growth/size/body
• male double homozygotes were more obese than heterozygous Ay males whereas females weighted the same as heterozygous Ay females





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last database update
04/23/2024
MGI 6.23
The Jackson Laboratory