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Phenotypes associated with this allele
Allele Symbol
Allele Name
Allele ID
Bud31em1Gpt
endonuclease-mediated mutation 1, GemPharmatech
MGI:7296069
Summary 2 genotypes
Jump to Allelic Composition Genetic Background Genotype ID
cn1
Bud31em1Gpt/Bud31em1Gpt
Stra8em1(GFP/cre)Smoc/Stra8+
involves: C57BL/6JGpt MGI:8288388
cn2
Bud31em1Gpt/Bud31em1Gpt
Tg(Ddx4-cre)1Dcas/0
involves: C57BL/6JGpt * FVB MGI:8288381


Genotype
MGI:8288388
cn1
Allelic
Composition
Bud31em1Gpt/Bud31em1Gpt
Stra8em1(GFP/cre)Smoc/Stra8+
Genetic
Background
involves: C57BL/6JGpt
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Bud31em1Gpt mutation (0 available); any Bud31 mutation (18 available)
Stra8em1(GFP/cre)Smoc mutation (0 available); any Stra8 mutation (36 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
reproductive system
• male germ cells fail to enter meiosis
• meiotic cells are reduced at P10 and P12 and no spermatocytes later than those with preleptotene stage chromosomes are seen in testes at P12
• no meiotic cells are seen in testes at P17, a time when pachytene chromosomes are seen in control testes
• P10 testes show reduced levels of genes involved in spermatogonia differentiation and male germ cells fail to enter meiosis

endocrine/exocrine glands

cellular
• male germ cells fail to enter meiosis
• meiotic cells are reduced at P10 and P12 and no spermatocytes later than those with preleptotene stage chromosomes are seen in testes at P12
• no meiotic cells are seen in testes at P17, a time when pachytene chromosomes are seen in control testes




Genotype
MGI:8288381
cn2
Allelic
Composition
Bud31em1Gpt/Bud31em1Gpt
Tg(Ddx4-cre)1Dcas/0
Genetic
Background
involves: C57BL/6JGpt * FVB
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Bud31em1Gpt mutation (0 available); any Bud31 mutation (18 available)
Tg(Ddx4-cre)1Dcas mutation (2 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
reproductive system
• decrease in the number of germ cells in the testes
• significant loss of spermatogonial stem cells
• no pups are obtained when adult males are mated with wild-type females indicating male infertility

endocrine/exocrine glands

cellular
• decrease in the number of germ cells in the testes
• significant loss of spermatogonial stem cells





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last database update
01/20/2026
MGI 6.24
The Jackson Laboratory