Another subunit of the Tau protein recognizes the "TAA" position in the TATA-BOX in the promoter or the Homeobox, MADS-box, and HMG box in the enhancer. The nuclease and transposase domains then cleave the "TAA" position. The first chain cut is a "TAA" fragment, while the second chain cut is a "TTA" fragment. The cuts at both extremities of the transposed telomere are complementary to the "TAA" and "TTA" fragments respectively, followed by the subsequent insertion of the transposed telomere fragment sequence (Figure .C).