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Phenotypes associated with this allele
Allele Symbol
Allele Name
Allele ID
Znrf4em1Osb
endonuclease-mediated mutation 1, Research Institute for Microbial Diseases, Osaka University
MGI:8224225
Summary 1 genotype
Jump to Allelic Composition Genetic Background Genotype ID
hm1
Znrf4em1Osb/Znrf4em1Osb B6;D2-Znrf4em1Osb/Osb MGI:8288870


Genotype
MGI:8288870
hm1
Allelic
Composition
Znrf4em1Osb/Znrf4em1Osb
Genetic
Background
B6;D2-Znrf4em1Osb/Osb
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Znrf4em1Osb mutation (1 available); any Znrf4 mutation (15 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
reproductive system
N
• males exhibit normal testis gross appearance, testis weight/body weight ratios, testis and epididymis histology, and normal cauda epididymal sperm motility with no major changes in sperm kinetic parameters relative to aged-matched heterozygous littermates; males sire pups with normal average litter sizes when paired with wild-type females
• nearly 70% of cauda epididymal spermatozoa show morphological defects
• abnormal cauda epididymal spermatozoa exhibit bent sperm heads, loss of apical hook, and irregular-shaped sperm heads

cellular
• nearly 70% of cauda epididymal spermatozoa show morphological defects
• abnormal cauda epididymal spermatozoa exhibit bent sperm heads, loss of apical hook, and irregular-shaped sperm heads





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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
01/28/2026
MGI 6.24
The Jackson Laboratory