Figure 5.
Effect of upstream ATGs in BACE-1 transcript leader on translation efficiency. (A) Scheme of the long BACE-1 transcript leader in the bi-monocistronic plasmid. The four upstream ATGs are marked with arrowheads. The black box represents the upstream ORF. The upstream ATGs were mutated to TTG, generating pBRm2L-B1x-mut1, pBRm2L-B1x-mut2, pBRm2L-B1x-mut3. (B) Transient transfection of bi-monocistronic plasmids in SK-N-BE cells. Results are normalized to the value of the long BACE-1 leader (pBRm2L-B1x).