About   Help   FAQ
Phenotypes associated with this allele
Allele Symbol
Allele Name
Allele ID
Polr1ctm1c(KOMP)Wtsi
targeted mutation 1c, Wellcome Trust Sanger Institute
MGI:7432633
Summary 1 genotype
Jump to Allelic Composition Genetic Background Genotype ID
cn1
Polr1ctm1c(KOMP)Wtsi/Polr1ctm1c(KOMP)Wtsi
Gt(ROSA)26Sortm1(cre/ERT2)Tyj/Gt(ROSA)26Sor+
involves: 129S4/SvJae * C57BL/6J * C57BL/6N MGI:8408506


Genotype
MGI:8408506
cn1
Allelic
Composition
Polr1ctm1c(KOMP)Wtsi/Polr1ctm1c(KOMP)Wtsi
Gt(ROSA)26Sortm1(cre/ERT2)Tyj/Gt(ROSA)26Sor+
Genetic
Background
involves: 129S4/SvJae * C57BL/6J * C57BL/6N
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Gt(ROSA)26Sortm1(cre/ERT2)Tyj mutation (7 available); any Gt(ROSA)26Sor mutation (1209 available)
Polr1ctm1c(KOMP)Wtsi mutation (0 available); any Polr1c mutation (32 available)
♀ phenotype observed in females
♂ phenotype observed in males
N normal phenotype
craniofacial
• at E12.5, embryos (tamoxifen-injected at E9.5) exhibit severe craniofacial abnormalities
• at E12.5, embryos (tamoxifen-injected at E9.5) exhibit reduced neural crest derivatives and complete absence of skeletal condensations in the face
• however, the trigeminal ganglion persists in the expected position
• at E12.5, embryos (tamoxifen-injected at E9.5) exhibit complete absence of skeletal condensations in the face

growth/size/body
• at E12.5, embryos (tamoxifen-injected at E9.5) exhibit complete absence of skeletal condensations in the face





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)
Citing These Resources
Funding Information
Warranty Disclaimer, Privacy Notice, Licensing, & Copyright
Send questions and comments to User Support.
last database update
09/08/2026
MGI 6.24
The Jackson Laboratory