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. 2005 Nov;79(22):13865–13874. doi: 10.1128/JVI.79.22.13865-13874.2005

FIG. 3.

FIG. 3.

Promoter activities of 5′-deleted ETnII LTRs in P19 and NIH 3T3 cells. (A) Graphical representation of the promoter efficiencies of 5′-deleted LTR#6 constructs. Numbers indicate the span of the construct, with base pairs corresponding to those in LTR#6. The putative TATA box and the transcription start site identified previously (20) are shown. Ovals represent possible Sp1 binding sites. The Sp1 binding site mutated in the 61(T)-317 construct is crossed. (B) Promoter activities of the LTR deletion constructs in P19 and NIH 3T3 cells as percentages of the promoter activities of full-length LTR#6.