DNA length is a critical parameter for eukaryotic transcription in vivo

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DNA length is a critical parameter for eukaryotic transcription in vivo.

The organization of eukaryotic chromosomes into topological domains has led to the assumption that DNA topology and perhaps supercoiling are involved in eukaryotic nuclear processes. Xenopus oocytes provide a model system for studying the role of DNA topology in transcription. Linear plasmid templates for RNA polymerases (Pols) I and II are not transcribed in Xenopus oocytes, while circular tem...

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Till now, in biological sciences, the term, transcription, mainly refers to DNA to RNA transcription. But our recently published experimental findings obtained from Plasmodium falciparum strongly suggest the existence of DNA to DNA transcription in the genome of eukaryotic cells, which could shed some light on the functions of certain noncoding DNA in the human and other eukaryotic genomes.

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Nanoparticle-mediated gene delivery is a promising alternative to viral methods; however, its use in vivo, particularly following systemic injection, has suffered from poor delivery efficiency. Although PEGylation of nanoparticles has been successfully demonstrated as a strategy to enhance colloidal stability, its success in improving delivery efficiency has been limited, largely due to reduced...

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Fragments of amplified Xenopus laevis DNA, coding for 18S and 28S ribosomal RNA and generated by EcoRI restriction endonuclease, have been linked in vitro to the bacterial plasmid pSC101; and the recombinant molecular species have been introduced into E. coli by transformation. These recombinant plasmids, containing both eukaryotic and prokaryotic DNA, replicate stably in E. coli. RNA isolated ...

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ژورنال

عنوان ژورنال: Molecular and Cellular Biology

سال: 1996

ISSN: 0270-7306,1098-5549

DOI: 10.1128/mcb.16.10.5821