passages.id: split_4_test_2669_passage
passages.type: progene_text
passages.text: The N - terminal 272 residues of hCyclinT1 , including the entire cyclin domains and the Tat . TAR recognition motif ( TRM ) , that fully support Tat transactivation was used for panning , and of the five unique anti - hCyclinT1 sFvs that were obtained , three bound to the cyclin box domains and two bound to TRM .