News tagged with rna

Related topics: dna · genes · protein · gene expression · cells

Human 'junk' gene sequences can promote translation

One of the biggest surprises of the past decade of genomic studies was the discovery that, contrary to previous belief, the majority of the genome is not used to produce proteins. Initially, many scientists thought that these ...

Sep 20, 2016
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TERRA, the RNAs that protect telomeres

Despite their especially compact and inaccessible structure, telomeres transcribe information like the rest of the DNA. The RNAs resulting from this process are called TERRA, and their function is essential in preserving ...

Aug 17, 2016
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RNA

Ribonucleic acid (RNA) is a biologically important type of molecule that consists of a long chain of nucleotide units. Each nucleotide consists of a nitrogenous base, a ribose sugar, and a phosphate. RNA is very similar to DNA, but differs in a few important structural details: in the cell, RNA is usually single-stranded, while DNA is usually double-stranded; RNA nucleotides contain ribose while DNA contains deoxyribose (a type of ribose that lacks one oxygen atom); and RNA has the base uracil rather than thymine that is present in DNA.

RNA is transcribed from DNA by enzymes called RNA polymerases and is generally further processed by other enzymes. RNA is central to the synthesis of proteins. Here, a type of RNA called messenger RNA carries information from DNA to structures called ribosomes. These ribosomes are made from proteins and ribosomal RNAs, which come together to form a molecular machine that can read messenger RNAs and translate the information they carry into proteins. There are many RNAs with other roles – in particular regulating which genes are expressed, but also as the genomes of most viruses.

This text uses material from Wikipedia, licensed under CC BY-SA

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