Protein (30 kD) extracted from jellyfish ( Aequorea aequorea ) that emits light in proportion to the concentration of calcium ions. Used to measure calcium concentrations, but has to be microinjected into cells. Contains EF-hand motif. See also bioluminescence.
Aequorin is a photoprotein isolated from the hydrozoan Aequorea victoria. Though the bioluminescence was studied decades before, the protein was originally isolated from the animal by Osamu Shimomura. In the animals, the protein occurs together with the Green fluorescent protein to produce green light by resonant energy transfer, while aequorin by...Found on http://en.wikipedia.org/wiki/Aequorin
<chemical> A photoprotein isolated from the bioluminescent jellyfish aequorea. It emits visible light by an intramolecular reaction when a trace amount of calcium ion is added. The light-emitting moiety in the bioluminescence reaction is believed to be 2-amino-3-benzyl-5-(p-hydroxyphenyl)pyrazine (af-350). ... Chemical name: Aequorins ... (12...Found on http://www.encyclo.co.uk/local/20973
Type: Term Pronunciation: ē′kwō-rin Definitions: 1. A luminescent protein isolated from the jellyfish Aequorea that emits blue light in the presence of even minute amounts of calcium ion; injected intracellularly, it is used to measure free calcium ion transients within cells.Found on http://www.medilexicon.com/medicaldictionary.php?t=1459
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