Messenger RNA definitions

Messenger rna

1) Microscopic code carrier
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Messenger RNA (mRNA) is a large family of RNA molecules that convey genetic information from DNA to the ribosome, where they specify the amino acid sequence of the protein products of gene expression, whose existence is suggested by Jacques Monod and François Jacob. Following transcription of primary transcript mRNA (known as pre-mRNA) by RNA pol...
Found on http://en.wikipedia.org/wiki/Messenger_RNA

messenger RNA

A chain of specific ribonucleotides that codes for a specific protein; template for the assembly of amino acids into protein; in cells mRNA is transcribed from DNA, but some RNA viruses function directly as mRNA.
Found on http://ppathw3.cals.cornell.edu/glossary/Defs_M.htm

messenger RNA

(from the article `Life Sciences`) ...of the paramutation, the researchers tested and ruled out a number of logical possibilities, such as DNA or histone methylation. They then ... Messenger RNA (mRNA) delivers the information encoded in one or more genes from the DNA to the ribosome, a specialized structure, or organelle, where ... ...
Found on http://www.britannica.com/eb/a-z/m/77

messenger RNA

A type of RNA found in cells. Messenger RNA molecules carry the genetic information needed to make proteins. They carry the information from the DNA in the nucleus of the cell to the cytoplasm where the proteins are made. Also called mRNA.
Found on http://www.cancer.gov/dictionary?expand=M

messenger RNA

(mRNA) A molecule of RNA that serves as a template for protein synthesis. mRNA is transcribed from a gene and then translated by ribosomes in order to manufacture a protein. Each set of three bases, called codons, specifies a certain protein in the sequence of amino acids t...
Found on http://www.daviddarling.info/encyclopedia/M/mRNA.html

Messenger RNA

a ribose nucleic acid acid which caries the DNA code in matching nucleotides, from the nucleus to the ribosome of the cell.
Found on http://www.encyclo.co.uk/local/20169

messenger RNA

Synonym for mRNA ... <molecular biology> Single stranded RNA molecule that specifies the amino acid sequence of one or more polypeptide chains. This information is translated during protein synthesis when ribosomes bind to the mRNA. ... In prokaryotes, mRNA is normally formed by splicing a large primary transcript from a DNA sequence and prot...
Found on http://www.encyclo.co.uk/local/20973

messenger RNA

(mRNA) a type of RNA named for its function of carrying the genetic code from the nucleus of the cell to the cytoplasm, where most cellular functions take place. The transfer of the genetic code from DNA to mRNA is called transcription. Molecules of mRNA migrate to the ribosomes, where the manufacture of proteins occurs...
Found on http://www.encyclo.co.uk/local/21001

messenger RNA

(= mRNA) Single-stranded RNA molecule that specifies the amino acid sequence of one or more polypeptide chains. This information is translated during protein synthesis when ribosomes bind to the mRNA. In prokaryotes, mRNA is the primary transcript from a DNA sequence and protein synthesis starts while the mRNA is still being synthesised. Prokaryote mRNAs are usually very short-lived (average t1/2 5min.). In contrast, in eukaryotes the primary transcripts (HnRNA) are synthesized in the nucleus and they are extensively processed to give the mRNA that is exported to the cytoplasm where protein synthesis takes place. This processing includes the addition of a 5'-5'-linked 7-methyl-guanylate 'cap' at the 5' end and a sequence of adenylate groups at the 3' end, the poly-A tail, as well as the removal of any introns and the splicing together of exons; only 10% of HnRNA leaves the nucleus. Eukaryote mRNAs are comparatively long-lived with t1/2 ranging from 30 min to 24 h. ...
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messenger RNA

(mRNA) The molecule transcribed by DNA that then carries genetic information from a gene to the site in the cell where the information determines the order of amino acids in the synthesis of a protein.
Found on http://www.fossilmall.com/Science/Glossary.htm