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Phenotypes Associated with This Genotype
Genotype
MGI:7707404
Allelic
Composition
Akap4em1Bbw/Y
Genetic
Background
C57BL/6J-Akap4em1Bbw
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Akap4em1Bbw mutation (0 available); any Akap4 mutation (3 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
reproductive system
• sperm with attenuated principal piece
• however, no obvious abnormalities in manchette structure of spermatids
• 54% of sperm show fiber sheath abnormalities in the flagella
• the fibrous sheath is either unrecognizable or partially lost
• approximately 25% of sperm exhibit bent tails
• approximately 33% of sperm exhibit short tails
• mice exhibit diminished sperm count
• males exhibit severe subfertility, with only 8/24 females mated with mutant males becoming pregnant

cellular
• sperm with attenuated principal piece
• however, no obvious abnormalities in manchette structure of spermatids
• 54% of sperm show fiber sheath abnormalities in the flagella
• the fibrous sheath is either unrecognizable or partially lost
• approximately 25% of sperm exhibit bent tails
• approximately 33% of sperm exhibit short tails
• mice exhibit diminished sperm count


Contributing Projects:
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
12/30/2025
MGI 6.24
The Jackson Laboratory