Definition: Messenger RNA (mRNA) is a single-stranded RNA molecule that is complementary to one of the DNA strands of a gene. The mRNA is an RNA version of the gene that leaves the cell nucleus and moves to the cytoplasm where proteins are made. During protein synthesis, an organelle called a ribosome moves along the mRNA, reads its base sequence, and uses the genetic code to translate each three-base triplet, or codon, into its corresponding amino acid.
Context: Stem cells can differentiate into all the specialized tissues and can replenish the specialized cells that have been lost because of injury, disease, or aging. Now, scientists from three schools of the University of Pennsylvania have found another way to change one cell type into another – by using messenger RNAs.
Expression: Messenger RNAs are associated with RNA-binding proteins
Weighting mark: nor
Sources:
Term: Recuperado el 19 de enero de 2014: http://www.cnrs.fr/cnrs-images/sciencesdelavieaulycee/lexique.htm
Definition: Recuperado el 19 de enero de 2014: http://www.cnrs.fr/cnrs-images/sciencesdelavieaulycee/lexique.htm
Context: Recuperado el 19 de enero de 2014: http://www.edu.upmc.fr/sdv/masselot_05001/annexe/annexe.html
Images:
http://www2.uni-jena.de/ufk/cdVorlesung/ovar.htm (abgerufen im November 2013).