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Phenotypes Associated with This Genotype
Genotype
MGI:7261374
Allelic
Composition
Gt(ROSA)26Sortm1.1(CAG-COX8A/Dendra2)Dcc/Gt(ROSA)26Sor+
MffGt(AZ0438)Wtsi/MffGt(AZ0438)Wtsi
Genetic
Background
involves: 129P2/OlaHsd * 129S6/SvEvTac * C57BL/6 * C57BL/6J
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Gt(ROSA)26Sortm1.1(CAG-COX8A/Dendra2)Dcc mutation (1 available); any Gt(ROSA)26Sor mutation (1062 available)
MffGt(AZ0438)Wtsi mutation (1 available); any Mff mutation (27 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
reproductive system
• >5% of caudal epididymidal sperm contain kinks in the neck
• >15% of caudal epididymidal sperm contain kinks in the midpiece
• caudal epididymidal sperm show disjointed mitochondrial sheaths with gaps between adjacent organelles
• >40% of caudal epididymidal sperm contain kinks in the principal piece
• >60% of caudal epididymidal sperm contain kinks in the midpiece, principal piece or neck
• most round and elongating spermatids contain tubular mitochondria, unlike in wild-type spermatids where mitochondria are almost always fragmented
• caudal epididymidal sperm are significantly less motile than wild-type sperm
• in an in vitro fertilization assay, cauda epididymidal sperm failed to fertilize any oocytes

cellular
• >5% of caudal epididymidal sperm contain kinks in the neck
• >15% of caudal epididymidal sperm contain kinks in the midpiece
• caudal epididymidal sperm show disjointed mitochondrial sheaths with gaps between adjacent organelles
• >40% of caudal epididymidal sperm contain kinks in the principal piece
• >60% of caudal epididymidal sperm contain kinks in the midpiece, principal piece or neck
• most round and elongating spermatids contain tubular mitochondria, unlike in wild-type spermatids where mitochondria are almost always fragmented
• most round and elongating spermatids contain tubular mitochondria, unlike in wild-type spermatids where mitochondria are almost always fragmented
• total mito-Dendra2 fluorescence is markedly reduced in the midpiece of epididymidal sperm
• caudal epididymidal sperm are significantly less motile than wild-type sperm


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
01/06/2026
MGI 6.24
The Jackson Laboratory