spacing mutations have been constructed between an sv40 72 bp enhancer element and the adenovirus-2 major late promoter upstream element ( ad2mlp-ue ) , the ad2mlp-ue and the ad2mlp tata-box and the sv40 72 bp enhancer and the tata-box in the absence of the ad2mlp-ue .
C0080206
tata-box
C0086860
ad2mlp-ue