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Trends Biochem Sci. 2003 Apr;28(4):202-9.

Detours and shortcuts to transcription reinitiation.

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Dipartimento di Biochimica e Biologia Molecolare, Università di Parma, Italy.


Gene transcription is repetitive, enabling the synthesis of multiple copies of identical RNA molecules from the same template. The cyclic process of RNA synthesis from active genes, referred to as transcription reinitiation, contributes significantly to the level of RNAs in living cells. Contrary to the perception that multiple transcription cycles are a mere iteration of mechanistically identical steps, a large body of evidence indicates that, in most transcription systems, reinitiation involves highly specific and regulated pathways. These pathways influence the availability for reinitiation of template DNA and/or transcription proteins, and represent an important yet poorly characterized aspect of gene regulation.

[Indexed for MEDLINE]

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