Botulinum Neurotoxin E Receptors and Uses Thereof
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United States of America Patent
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app pub date -
May 20, 2014
filing date -
Sep 30, 2008
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Abstract
An isolated polypeptide comprising an amino acid sequence selected from amino acids 506-582 of SV2A, wherein position 573 is N and is glycosylated, or amino acids 449-525 of SV2B, wherein position 516 is N and is glycosylated. The present invention also provides an antibody that binds specifically to the polypeptide, an isolated nucleic acid comprising a polynucleotide that encodes the polypeptide; a method for reducing BoNT/E toxicity in an animal; a method for identifying an agent that blocks or inhibits binding between BoNT/E and an SV2A or SV2B protein; a method for monitoring synaptic vesicle endo- or exocytosis, a method for specifically delivering a chemical entity to a cell which has a specific receptor to a BoNT toxin. Also provided are a chimeric toxin for targeting a proteolytic domain of a toxin to a cell, the chimeric toxin comprising a catalytic or proteolytic domain of the BoNT toxin, and a ligand or a fragment thereof for a non-BoNT receptor on the cell; a method for targeting a proteolytic domain of a BoNT toxin to a cell, an isolated non-neuronal cell comprising a BoNT toxin receptor; and a method for screening for an inhibitor of a BoNT toxin.
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