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Type A neurotoxin of Clostridium botulinum was purified by a simple procedure using a lactose gel column. This procedure was previously reported for type B neurotoxin. Hemagglutinin-positive toxins (19S and 16S) were bound to the column under acid conditions, and the neurotoxin alone was dissociated from these hemagglutinin-positive toxins by changing the pH of the column to an alkaline condition...
Relying on ex vivo and in vitro platelet anti-aggregation assays, a tail bleeding time assay, and an anti-thrombotic assay, we have purified the fraction of venom from Agkistrodon halys pallas which, in all of these assays, is the most active. There were two major steps in the purification: gel filtration chromatography on Sephadex G-100, and ion exchange chromatography on DEAE Sephadex A-50. Sequencing...
A serine proteinase-like protein was isolated from the venom of Chinese red scorpion (Buthus martensii Karsch) by combination of gel filtration, ion-exchange and reveres-phase chromatography and named BMK-CBP. The apparent molecular weight of BMK-CBP was identified as 33kDa by SDS-PAGE under non-reducing condition. The sequence of N-terminal 40 amino acids was obtained by Edman degradation. The sequence...
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