The RMCE cassette of the TI{CRIMIC.TG4.0}CG5001CR00950-TG4.0 insertion has been replaced with a TI{FFL.0} cassette that is in gene-trap (GT) orientation relative to CG5001. This is expected to truncate the CG5001 protein and to result in the expression of a separate mCherry protein under the control of endogenous CG5001 regulatory sequences.