Figure 2. Analysis of the luciferase activity of T lymphocytes containing plasmids with different amounts of the CD3γ regulatory sequence. Names of the plasmids are shown on the left. Included regulatory sequences and the resulting luciferase activity are shown on the right. Error bars represent ±2SEx¯ . The transcription start site is indicated by +1 . (a) Identify both the cellular component and the location of the component that is responsible for producing the luciferase protein from mRNAs transcribed in the plasmid-containing T lymphocytes. Explain what dictates to the lymphocytes the correct order in which amino acids should be linked to form the luciferase protein.