our results using these two purified factors in vitro suggest that prtf has nearly the same affinity for a- and alpha-specific uas elements and that transcriptional activation requires a particular conformational state for the prtf-dna complex which occurs in the prtf-ste2 and mat alpha 1-prtf-ste3 complexes , but not in the prtf-ste3 complex .
C0162493
transcriptional
C0040649
prtf