- Transcription starts with the unwinding of the DNA double helix.

- Specific proteins, called transcription factors, bind to the DNA at a region called the promoter, initiating the unwinding process.

- The unwinding creates a transcription bubble where the DNA strands separate, exposing the template strand for transcription.

2. RNA Polymerase Binding:

- RNA polymerase, an enzyme responsible for synthesizing RNA, binds to the promoter region of the DNA.

- The promoter sequence acts as the recognition site for RNA polymerase.

- Once bound, RNA polymerase is ready to begin transcribing the DNA into RNA.

3. Formation of the Transcription Initiation Complex:

- Additional proteins, known as transcription factors and coactivators, bind to the promoter region near the RNA polymerase.

- Together, these proteins form the transcription initiation complex.

- The transcription initiation complex helps stabilize RNA polymerase and facilitates the initiation of transcription.