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Breaking News: Trump administration impacts continue to roil the life sciences sectorSee today's BioWorld Science
Home » Biosynthesis of telomerase from a coding mRNA
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Drug Design, Drug Delivery & Technologies

Biosynthesis of telomerase from a coding mRNA

Oct. 6, 2022
By Mar de Miguel
Arizona State University scientists have discovered an unprecedented pathway in a fungus to produce telomerase RNA (TER) from a protein-encoding messenger RNA (mRNA). Unlike in animals and other fungi, this fungal TER is transcribed by RNA polymerase III, lacks a protective 5′ cap and it is processed from the 3′-untranslated region of an mRNA transcript. This telomerase has two essential structural domains that keep it active. For now, scientists have only observed this process in the fungus Ustilago maydis, or Mexican truffle. “In animals, and even in Ascomycota, which is another fungal phylum, the telomerase RNA is transcribed by RNA polymerase II as an independent gene. This is the only case among all different kingdoms in eukaryotes that the telomerase RNA is processed from the mRNA molecule. It is a very unusual biogenesis pathway.” Julian Chen told BioWorld.
BioWorld Science Drug design, drug delivery and technologies RNA Vaccines

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