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Phenotype Images associated with this Allele
Nomenclature
Symbol: Urm1em1(IMPC)J
Name: ubiquitin related modifier 1; endonuclease-mediated mutation 1, Jackson
MGI ID: MGI:6385665
Synonyms: Urm1-
Images for
Allele
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Image Caption Genotypes involving this allele
Allelic Composition Genetic Background
Urm1em1(IMPC)J/Urm1em1(IMPC)J embryos are small and developmentally delayed. Almost all E9.5 embryos display incomplete turning and abnormal head shape and most have abnormal branchial arches. Half of E9.5 embryos have abnormal cranial neural tube closure, abnormal cardiac development and slight neural tube kinking. E10.5 embryos not dying have abnormal head and slight neural tube kinking.Urm1em1(IMPC)J/Urm1em1(IMPC)JC57BL/6NJ-Urm1em1(IMPC)J/Mmjax
At E9.5, AlleleSymbol(MGI:6385665|0)/Urm1em1(IMPC)J (-/-) placentas exhibit a diminished spongiotrophoblast layer, abnormal chorioallantoic interface, multiple labyrinth zone defects, and impaired chorioallantoic branching.Urm1em1(IMPC)J/Urm1em1(IMPC)JC57BL/6NJ-Urm1em1(IMPC)J/Mmjax
Despite an overall delay, E8.5 Urm1em1(IMPC)J/Urm1em1(IMPC)J (-/-) embryos display normal germ layer formation and patterning.Urm1em1(IMPC)J/Urm1em1(IMPC)JC57BL/6NJ-Urm1em1(IMPC)J/Mmjax
By E9.5, Urm1em1(IMPC)J/Urm1em1(IMPC)J (Urm1-/-) embryos remain delayed but exhibit normal development including that of the heart and gut.Urm1em1(IMPC)J/Urm1em1(IMPC)JC57BL/6NJ-Urm1em1(IMPC)J/Mmjax
Urm1em1(IMPC)J/Urm1em1(IMPC)J (-/-) embryos show developmental delay. Despite the delay, some E10.5 embryos show normal histology. This embryo has abnormal blood deposits and forebrain, and a slight neural tube kink.Urm1em1(IMPC)J/Urm1em1(IMPC)JC57BL/6NJ-Urm1em1(IMPC)J/Mmjax
E7.5 Urm1em1(IMPC)J/Urm1em1(IMPC)J embryos are smaller.Urm1em1(IMPC)J/Urm1em1(IMPC)JC57BL/6NJ-Urm1em1(IMPC)J/Mmjax

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
01/28/2026
MGI 6.24
The Jackson Laboratory