Tag:MT(btau) is fused to the 5' regulatory region and first three exons of Lim3.
Lim3T:BtauMAPT,T:HsapMYC drives expression in a subset of ventral motor neurons which exit the ventral nerve cord via the ISNb nerve branch. There is co-expression with Oli protein.
Studies using reporter constructs indicate that Lim3 expressing cells include a subset of interneurons and motor neurons, including motor neurons RP1, RP3, RP4, RP5, the contralateral V motor neuron which innervates muscle 12, and MN28 and MN14/30 which innervate muscles 28 and 14 plus 30, respectively.