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* השאלה נוספה בתאריך: 27-01-2021

		1. catalyses phosphodiester bond formation.
		2. determines the accuracy of transcription.
		3. is released from the polymerase holoenzyme after the first few nucleotides have been joined.
		4. contains the 3’ to 5’ proofreading activity.
		5. is an elongation factor.
		6. binds to specific DNA sequences.

The sigma polypeptide of the prokaryotic transcription holoenzyme