The genomic tim promoter drives expression of a mutated tim cDNA, in which the ATG start codon at position 311-313 is mutated to GGG so that only the long tim isoform can be expressed from this transgene.
timmTimL flies kept in constant light conditions show locomotor arrhythmicity, as do wild-type flies.
timmTimL partially rescues tim01
Expression of timmTimL results in significant rescue of the arrhythmic tim01 locomotor phenotype in males.