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In molecular biology, the five-prime cap (5′ cap) is a specially altered nucleotide on the 5′ end of some primary transcripts such as precursor messenger RNA.This process, known as mRNA capping, is highly regulated and vital in the creation of stable and mature messenger RNA able to undergo translation during protein synthesis.
The NAD+ 5' cap has been observed in bacteria, [3] contrary to the long-held belief that prokaryotes lacked 5'-capped RNA, [4] as well as on the 5' cap of eukaryotic mRNA, [5] in place of the m7G cap. This modification also potentially allows for selective degradation of RNA]within prokaryotes as different pathways are involved in the ...
The CHMP recommends authorizing Moderna's (MRNA) bivalent COVID-19 booster vaccine, targeting the Omicron BA.4/5 subvariants, for use in adults and adolescents aged 12 years and older.
It consists of a five-prime cap; a five prime untranslated region derived from the sequence of human alpha globin; a signal peptide (bases 55–102) and two proline substitutions (K986P and V987P, designated "2P") that cause the spike to adopt a prefusion-stabilized conformation reducing the membrane fusion ability, increasing expression and ...
A CDC advisory committee recommended boosters of Moderna and Johnson & Johnson, and endorsed a "mix and match" approach to booster shots.
“What I think is a more interesting combination is the Johnson & Johnson vaccine followed by an mRNA booster,” he said. That’s because the two vaccines use different technologies to trigger ...
"An effective vaccine usually requires more than one time immunization in the form of prime-boost. Traditionally the same vaccines are given multiple times as homologous boosts. New findings suggested that prime-boost can be done with different types of vaccines containing the same antigens. In many cases such heterologous prime-boost can be ...
5' cap structure. Capping is a three-step process that utilizes the enzymes RNA triphosphatase, guanylyltransferase, and methyltransferase. [1] [2] Through a series of three steps, the cap is added to the first nucleotide's 5' hydroxyl group of the growing mRNA strand while transcription is still occurring.
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