Final answer:
The proteins in the transcription initiation complex are crucial for the proper initiation and regulation of transcription. Removing any of these proteins can disrupt the process and result in altered or no transcription.
Step-by-step explanation:
The transcription initiation complex is a crucial step in the process of transcription, where RNA polymerase binds to the DNA and initiates the synthesis of RNA. If any one of the proteins in the transcription initiation complex is subtracted, it can significantly alter transcription levels or prevent transcription from occurring altogether.
For example, if transcription factors, which are proteins that bind to specific DNA sequences, are missing from the initiation complex, they would not be able to bind to the transcription binding sites and initiate transcription. Similarly, if the large ribosomal subunit is unable to interact with mRNA transcripts, translation would not be able to proceed.
In summary, the proteins in the transcription initiation complex are essential for the proper initiation and regulation of transcription. Removing any of these proteins can disrupt the process and result in altered or no transcription.