tokens: Collectively , these results show that the differential utilization of Staf zinc finger 1 represents a new , critical determinant of the transcriptional activation mechanism for the Xenopus tRNA ( Sec ) and human U6 snRNA genes .
folded_tokens: collectively , these result show that the differential utilization of Staf zinc finger 1 represent a new , critical determinant of the transcriptional activation mechanism for the xenopus trna ( Sec ) and human u6 snrna gene .