| Primary Identifier | MGI:5509060 | Allele Type | Targeted |
| Attribute String | Null/knockout, Reporter | Gene | Top1 |
| Transmission | Germline | Strain of Origin | C57BL/6N |
| Is Recombinase | false | Is Wild Type | false |
| Project Collection | KOMP-CSD |
| molecularNote | The L1L2_gt1 cassette was inserted at position 160511599 of Chromosome 2 upstream of the critical exon(s) (Build GRCm39). The cassette is composed of an FRT flanked lacZ/neomycin sequence followed by a loxP site. An additional loxP site was inserted downstream of the targeted exon(s) at position 160512356. The critical exon(s) were thus flanked by loxP sites, and subsequent Cre-mediated excision deleted the critical sequence and the neomycin selection cassette yielding a knockout reporter allele. Further information on targeting strategies used for this and other IKMC alleles can be found at http://www.informatics.jax.org/mgihome/nomen/IKMC_schematics.shtml. |
