Deletion of all four potential ban protein binding sites that are present in the Clk 3'UTR.
Pdf neuron
Flies carrying ClkΔ1-4.T:SV5\V5 show variable and increased number of Pdf neurons.
ClkΔ1-4.Tag:V5 partially rescues Clkar
ClkΔ1-4.T:SV5\V5 poorly rescues the arrhythmic locomotor behaviour of Clkar flies.