Contains the lig enhancer/promoter region (the fragment extends to -2230bp upstream of the start codon) driving expression of the lig A isoform, followed by an SV40 intron/polyA signal.
ligA.Elig rescues ligP1/ligPP1
ligA.Elig partially rescues ligP1
Only 13% of ligP1 mutant males carrying ligA.Elig dismount abnormally upon termination of copulation, compared to 75% of ligP1 mutants.
70% of ligA.Elig rescued ligP1/ligPP1 males, compared to 26% of ligP1/ligPP1 mutant males, succeed in copulating within a one-hour observation.