News tagged with rna

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

Researchers block HIV replication

A multidisciplinary team of scientists from Spanish universities and research centres, among which is the University of Valencia, has managed to design small synthetic molecules capable of joining to the ...

Dec 02, 2013
popularity 5 / 5 (15) | comments 1 | with audio podcast

Surprising new way to kill cancer cells

Northwestern Medicine scientists have demonstrated that cancer cells – and not normal cells – can be killed by eliminating either the FAS receptor, also known as CD95, or its binding component, CD95 ligand.

Mar 21, 2014
popularity 5 / 5 (10) | comments 0

LincRNA, once believed useless, plays role in genome

Ever since the Human Genome Project decoded the genome, the prevailing scientific view has been that only the 2 percent that makes proteins—the building blocks of cells—was important. The rest was deemed ...

Jan 23, 2014
popularity 4.6 / 5 (9) | comments 2 | with audio podcast

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