In the process of creating a trp operon mutant, the region for the riboswitch was accidentally deleted. Which of the following would be a likely observation in the transcription assays?

Some DNA-binding proteins can induce bends or kinks in their target DNA.

The ___________ assay permits us to detect proteins that interact through non-covalent interactions. This assay uses multiple plasmids and a reporter gene.

The basic region of ______________ transcription activator proteins bind as dimers that are held together through hydrophobic interactions between leucines.

Which of the following are typical features of transcriptional activators?

Which of the following is most likely to occur if the level of glucose is low in a bacterial cell?

Which of the following is absent in an operon?

32P-end-labeled DNA fragment contains the AP-1–binding site sequence. The DNA was mixed with Fos, FosC (a fragment of Fos), or Jun (all of which would form a homodimer), or with a mixture of Fos and Jun or a mixture of FosC and Jun (both of which would form the two types of homodimer and the heterodimer). Reactions were analyzed by polyacrylamide gel electrophoresis, then autoradiography.  The results are shown below.   This technique is called:

Which of the following is NOT a characteristic of a riboswitch?

The phosphorylation of eIF2 inhibits translation initiation by: