DNA replication requires RNA primers while transcription does not
DNA replication strictly requires RNA primers to provide a free 3'-OH group for chain elongation, whereas RNA polymerases (transcription) are capable of initiating de novo synthesis without a primer.
The retrieved papers and established molecular biology principles confirm that DNA replication relies on RNA primers to initiate synthesis because DNA polymerases cannot start chains de novo. In contrast, RNA polymerases (transcription) initiate synthesis de novo using incoming nucleoside triphosphates without needing a pre-existing primer. Thus, the claim is well-supported by fundamental biological principles and corroborated by the mechanism of transcription initiation.
S. Borukhov, V. Sagitov, C. A. Josaitis, R. Gourse, A. Goldfarb. Two modes of transcription initiation in vitro at the rrnB P1 promoter of Escherichia coli.. 1993. https://doi.org/10.1016/s0021-9258(19)49487-8
Discusses transcription initiation using RNA oligomers synthesized in situ or starting de novo, highlighting the absence of a traditional exogenous primer requirement.
See more details
I. Kuzmine, P. Gottlieb, Craig T Martin. Binding of the Priming Nucleotide in the Initiation of Transcription by T7 RNA Polymerase*. 2003. https://doi.org/10.1074/jbc.M208405200
Explicitly states that RNA polymerases must initiate transcription de novo without the benefit of an associated primer, unlike DNA polymerases.
The paper trail · every fact has a biography
Challenge the receipt
Citation formatting by citeproc-js (Frank Bennett) and the Citation Style Language project. Source and licenses.
Terms · Privacy · How verdicts work · Dispute this receipt