signal molecule


Also found in: Encyclopedia.

signal molecule

[sig′nəl]
Etymology: L, signum, mark
a hormone, neurotransmitter, or other agent that transfers information from one cell or organ to another. Examples include steroid hormones, insulin, and growth factors. A photon may have a similar effect on a retinal receptor.
References in periodicals archive ?
These bacteria communicate via the signal molecule dialkylresorcinol, which recognised the associated LuxR receptor.
They allowed the enzymatic reaction to take place and electrochemically measured its biochemical output - a signal molecule that cues bacterial behavior.
The mechanism through which QS signals work is by activating gene expression upon interaction of a QS signal molecule with a receptor protein.
The volume is divided into five sections covering the nitrogen cycle, plant-soil microbe interactions, epi- and endo-phytic microbes, arthropods, and environmental signaling in nitrogen acquisition, and individual papers address topics such as actinorhizal symbioses, plant defense proteins, flavinoids in legume-rhizobia interactions, and nitric oxide as a signal molecule in bacteria-plant interactions.
Nitric Oxide is a ubiquitous signal molecule which has a role in regulating airway muscle tone, vasodilatation, ventilation and perfusion relationships, neuro-signaling, epidural defense, erectile function and stem cell differentiation.
However, a single bacterial species can use more than one signal molecule, and it may respond to each molecule in a different manner.
Mr Furchgott, a pharmacologist at the State University of New York in Brooklyn, established in 1980 that blood vessels dilate, or become wider, because their surface cells - the endothelium - produce an unknown signal molecule that makes their smooth mu scle cells relax.
Washington, June 4 (ANI): A new study has shed light on why the normally transient inflammatory response is not turned off and becomes chronic, secreting a signal molecule that promotes atherosclerosis.
London, June 29 (ANI): Scientists at Imperial College London say that blocking a signal molecule made by the human body, which triggers the immune system into action, may make it possible to develop more effective treatments for rheumatoid arthritis.
Such a signal molecule has not yet been identified.
Adenosine is a naturally occurring signal molecule that acts at multiple adenosine receptor subtypes (specialized proteins at the cell surface) to modulate key cellular functions.
One fragment belongs to a gene whose protein binds calcium, an important signal molecule.