What is RNA?

  • (noun): (biochemistry) a long linear polymer of nucleotides found in the nucleus but mainly in the cytoplasm of a cell where it is associated with microsomes; it transmits genetic information from DNA to the cytoplasm and controls certain chemical processes in the cell.
    Synonyms: ribonucleic acid


Ribonucleic acid (RNA) is a ubiquitous family of large biological molecules that performs multiple vital roles in the coding, decoding, regulation, and expression of genes. Together with DNA, RNA comprises the nucleic acids, which, along with proteins, constitute the three major macromolecules essential for all known forms of life. Like DNA, RNA is assembled as a chain of nucleotides, but is usually single-stranded. Cellular organisms use messenger RNA (mRNA) to convey genetic information (recorded using the letters G, A, U, and C for the nucleotides guanine, adenine, uracil and cytosine) that directs synthesis of specific proteins, while many viruses encode their genetic information using an RNA genome.

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Some articles on RNA:

Retron Msr RNA
... Retron msr RNA is a non-coding RNA produced by retron elements ... The retron msr RNA folds into a characteristic secondary structure that contains a conserved guanosine residue at the end of a stem loop ... transcriptase (RT) results in a DNA-RNA chimera which is composed of small single-stranded DNA linked to small single-stranded RNA ...
... The RyeB RNA is a non-coding RNA that was identified in a large scale screen of E ... The exact 5' and 3' ends of this RNA are uncertain ... This RNA overlaps the SraC/RyeA RNA on the opposite strand suggesting that the two may act in a concerted manner ...
Key Discoveries in RNA Biology
... Further information History of RNA biology Research on RNA has led to many important biological discoveries and numerous Nobel Prizes ... The role of RNA in protein synthesis was suspected already in 1939 ... after he discovered an enzyme that can synthesize RNA in the laboratory ...
Rsm Y RNA Family - See Also
... CsrB/RsmB RNA family CsrC RNA family PrrB/RsmZ RNA family RsmX. ...