Fluorescently-labeled toxins can be used to label or inhibit receptors or ion channels on neurons. Biotium offers these labeled with a variety of bright, stable CF® Dyes.
α-Bungarotoxin binds to the acetylcholine receptor.
Cholera Toxin B binds to GM1 gangliosides in lipid rafts.
Tetrodotoxin reversibly blocks excitable sodium channels.
Biotium also offers other fluorescently-labeled molecules to bind to cell surface receptors.
Transferrin binds to its receptor and is internalized by endocytosis.
cAMP can be used to probe cAMP receptors.