messenger molecule — a molecule that carries a messenger from one cell to another, usually itself not binding to the receptor site … Medical dictionary
Messenger RNA — The life cycle of an mRNA in a eukaryotic cell. RNA is transcribed in the nucleus; processed, it is transported to the cytoplasm and translated by the ribosome. At the end of its life, the mRNA is degraded. Messenger RNA (mRNA) is a molecule of… … Wikipedia
Messenger — Courier, or messenger, is a person or thing that carries a message. Messenger or Messengers may also refer to: Contents 1 Biology and chemistry 2 Films and television … Wikipedia
messenger — 1. That which carries a message. 2. Having message carrying properties. first m. a hormone that binds to a receptor on the surface cell and, in so doing, communicates with intracellular metabolic processes. second m. an intermediary molecule that … Medical dictionary
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… … Dictionary of molecular biology
messenger RNA — Genetics. a single stranded molecule of RNA that is synthesized in the nucleus from a DNA template and then enters the cytoplasm, where its genetic code specifies the amino acid sequence for protein synthesis. Abbr.: mRNA [1960 65] * * * … Universalium
messenger RNA — n. biochem. gen a molecule of RNA that is synthesized in the nucleus from a DNA template and then enters the cytoplasm, where its genetic code specifies the amino acid sequence for protein synthesis Abbr.: mRNA • Etymology: 1960–65 … From formal English to slang
Second messenger system — In cell physiology, a secondary messenger system (also known as a second messenger system) is a method of cellular signaling, whereby a diffusable signaling molecule is rapidly generated/released which can then go on to activate effector proteins … Wikipedia
second messenger — n an intracellular substance (as cyclic AMP) that mediates cell activity by relaying a signal from an extracellular molecule (as of a hormone or neurotransmitter) bound to the cell s surface compare FIRST MESSENGER * * * an organic molecule that… … Medical dictionary
second messenger — Biochem. any of various intracellular chemical substances, as cyclic AMP, that transmit and amplify the messages delivered by a first messenger to specific receptors on the cell surface. Cf. first messenger. [1960 65] * * * ▪ biology molecule… … Universalium