The RMCE cassette of the TI{CRIMIC.TG4.0}GatCR01191-TG4.0 insertion has been replaced with a 'Double Header' (DH) trapping cassette (contains two independent trapping modules oriented in opposite directions). The insertion is in a coding intron of Gat (in the protein-trap orientation relative to the gene) and is predicted to trap the gene with a EGFP-FlAsH-StrepII-TEV-3xFlag multi-tag cassette. The homology arms of the donor vector overlapped by 9 bp. It is unknown whether the insertion is precise or if there is a small deletion or duplication. The insertion site coordinate is the Cas9 cut site predicted for the CRISPR guide RNA. The PCR check of the insertion gave a shorter than expected band for the right flank and the expected sized product for the left flank.