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Phenotypes associated with this allele
Allele Symbol
Allele Name
Allele ID 		Ndufa13+
wild type
MGI:3582772
Summary 1 genotype
Jump to Allelic Composition Genetic Background Genotype ID
ht1
 		Ndufa13em1Nju/Ndufa13+ C57BL/6-Ndufa13em1Nju MGI:7314486


Genotype
MGI:7314486
ht1
Allelic
Composition		 Ndufa13em1Nju/Ndufa13+
Genetic
Background		 C57BL/6-Ndufa13em1Nju
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Ndufa13em1Nju mutation (0 available); any Ndufa13 mutation (14 available)
♀ phenotype observed in females
♂ phenotype observed in males
N normal phenotype
reproductive system
reproductive system phenotype ( J:326065 )
N
• male mice exhibit normal relative testicular shape and weight and sperm morphology compared with wild-type males
oligozoospermia ( J:326065 )
• sperm count is significantly lower than that in wild-type males
increased male germ cell apoptosis ( J:326065 )
• annexin V-FITC analysis of spermatozoa samples showed a significant increase in apoptotic cells relative to wild-type cells
abnormal testis morphology ( J:326065 )
• the intercellular space in testis tissue is larger than in controls testes
abnormal seminiferous tubule morphology ( J:326065 )
• spermatogenic cells of all levels are sparsely arranged in the lumen of seminiferous tubules
abnormal testis physiology ( J:326065 )
• testes show significantly reduced protein expression of key steroidogenic proteins such as STAR, CYP11A1 and HSD3B
• in vitro, isolated Leydig cells show significantly reduced expression of testicular biosynthesis proteins such as STAR, CYP11A1 and HSD3B
abnormal sperm physiology ( J:326065 )
• sperm show a significantly reduced mitochondrial membrane potential relative to wild-type cells
decreased sperm progressive motility ( J:326065 )
• sperm progressive motility is significantly lower than that in wild-type males
asthenozoospermia ( J:326065 )
• total sperm motility is significantly lower than that in wild-type males

cellular
oligozoospermia ( J:326065 )
• sperm count is significantly lower than that in wild-type males
increased male germ cell apoptosis ( J:326065 )
• annexin V-FITC analysis of spermatozoa samples showed a significant increase in apoptotic cells relative to wild-type cells
decreased sperm progressive motility ( J:326065 )
• sperm progressive motility is significantly lower than that in wild-type males
asthenozoospermia ( J:326065 )
• total sperm motility is significantly lower than that in wild-type males
abnormal mitochondrial physiology ( J:326065 )
• sperm show a significantly reduced mitochondrial membrane potential relative to wild-type cells
oxidative stress ( J:326065 )
• spermatozoa show a significant increase in intracellular reactive oxygen species (ROS) production relative to wild-type cells

homeostasis/metabolism
decreased circulating testosterone level ( J:326065 )
• serum testosterone level is significantly lower than that in wild-type males

endocrine/exocrine glands
abnormal testis morphology ( J:326065 )
• the intercellular space in testis tissue is larger than in controls testes
abnormal seminiferous tubule morphology ( J:326065 )
• spermatogenic cells of all levels are sparsely arranged in the lumen of seminiferous tubules
abnormal testis physiology ( J:326065 )
• testes show significantly reduced protein expression of key steroidogenic proteins such as STAR, CYP11A1 and HSD3B
• in vitro, isolated Leydig cells show significantly reduced expression of testicular biosynthesis proteins such as STAR, CYP11A1 and HSD3B




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Send questions and comments to User Support. 		last database update
03/31/2026
MGI 6.24 		The Jackson Laboratory