試題詳解

7. Which of the following statement is true for transcription activators in eukaryote?
(A) The general transcription factor TFIIIA has a bZIP domain that contains two cysteines and two histidines coordinated to a zinc ion.
(B) Some transcriptional activators can be sumoylated, which marks them for destruction by proteasome.
(C) Enhancers are DNA-binding proteins that can induce strong bending in DNA.
(D) Each homeodomain protein contains three alpha-helices in which the third serves as the DNA-recognition helice.
(E) Glutamine-rich domains are found to be important for DNA binding in several eukaryotic transcription factors.