| Primary Identifier | MGI:3606782 | Allele Type | Transgenic |
| Attribute String | Inserted expressed sequence | Gene | Tg(Lim2*G15V)1Rlc |
| Inheritance Mode | Semidominant | Strain of Origin | (C57BL/6 x SJL)F2 |
| Is Recombinase | false | Is Wild Type | false |
| description | Only one founder, 26011F, transmitted the transgene and the eye phenotype; a second transgenic mouse, also having the eye phenotype, failed to transmit either. Absolute concordance of transgene dosage and the presence and severity of the eye phenotype in >100 progeny of founder 26011F and her offspring verified that the Lim2 mutation identified in To3 mice is responsible for the dominantly inherited To3 phenotype. |
| molecularNote | The transgene comprises 6.3 kb of genomic DNA containing the entire mouse Lim2 gene, including 399 bp of 5' flanking DNA, with the G-to-T transversion in exon 2 putatively responsible for the dominant total opacity 3 (To3) phenotype. Dot-blot and Southern blot analyses of genomic DNA from transgenic mice indicate presence of two co-integrated copies. RT-PCR of total mouse lens RNA followed by digestion of the PCR product with BstE II, which cuts within the mutant, but not the wildtype, Lim2 cDNA, revealed a low but reproducible ratio of transgenic to wildtype mRNA in lenses from fetal (E18), weanling (P~20) and adult (P>20) transgenic mice. |
