The three clustered Cys residues (in the N-terminal cytoplasmic portion of M6 have each been mutated to Ser, on a chromosome that carried the P{PTT-GA}M6CA06602 insertion.
Insertion within an intron located between two non-coding regions, not in the appropriate predicted reading frame to fuse the GFP exon in the inserted construct to the endogenous protein.
Protein trap line.