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Phenotypes associated with this allele
Allele Symbol
Allele Name
Allele ID
Prss55em1Huizh
endonuclease-mediated mutation 1, Hui Zhu
MGI:7294425
Summary 1 genotype
Jump to Allelic Composition Genetic Background Genotype ID
hm1
Prss55em1Huizh/Prss55em1Huizh Not Specified MGI:7310065


Genotype
MGI:7310065
hm1
Allelic
Composition
Prss55em1Huizh/Prss55em1Huizh
Genetic
Background
Not Specified
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Prss55em1Huizh mutation (0 available); any Prss55 mutation (19 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
reproductive system
N
• female mice are fertile and produce normal litter sizes
• male mice show normal testis morphology, testis/body weight ratio and spermatogenesis, with no significant alterations in the number of spermatogenic cells in the seminiferous tubules or changes in apoptosis signals; epididymis morphology and size, epididymis/body weight ratio, and cauda epididymal sperm count are all normal
• sperm show a significantly higher malformation rate than wild-type sperm
• in some cases, more than one set of structures (microtubules, peripheral dense fibers and mitochondria) are contained in the same cross section of the sperm tail
• incomplete or damaged peripheral dense fibers are observed
• ODF1 levels are significantly decreased
• partial deletion of microtubules is observed, indicating a deficient of 9 + 2 arrangement
• lack of or blurred mitochondrial cristae are observed
• sperm tails exhibit varying degrees of folding and curling
• in many cases, the sperm head is completely bent backward and closely fitted to the tail, tightly wrapped in a membrane
• male mice show a severe decline in fertility, producing only one pup during a 6-month monitoring period
• sperm ATP content is significantly lower than that in wild-type sperm
• mRNA levels of key markers in the mitochondrial electron transfer chain are significantly reduced in sperm
• progressive motility % of epididymal sperm is significantly lower than that in wild-type males
• total motility % of epididymal sperm is significantly lower than that in wild-type males

cellular
• sperm show a significantly higher malformation rate than wild-type sperm
• in some cases, more than one set of structures (microtubules, peripheral dense fibers and mitochondria) are contained in the same cross section of the sperm tail
• incomplete or damaged peripheral dense fibers are observed
• ODF1 levels are significantly decreased
• partial deletion of microtubules is observed, indicating a deficient of 9 + 2 arrangement
• lack of or blurred mitochondrial cristae are observed
• sperm tails exhibit varying degrees of folding and curling
• in many cases, the sperm head is completely bent backward and closely fitted to the tail, tightly wrapped in a membrane
• sperm show lack of or blurred mitochondrial cristae
• progressive motility % of epididymal sperm is significantly lower than that in wild-type males
• total motility % of epididymal sperm is significantly lower than that in wild-type males
• mRNA levels of key markers in the mitochondrial electron transfer chain (Cox2 and Mtatp) are significantly lower than in wild-type sperm





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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
12/10/2024
MGI 6.24
The Jackson Laboratory