Lala K, Narayanan P. Purification, N-terminal sequence and structural characterization of a toxic protein from the Indian scorpion venom Buthus tamulus.
Toxicon 1994;
32:325-38. [PMID:
8016854 DOI:
10.1016/0041-0101(94)90085-x]
[Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
A toxic protein component (Bt-II) was isolated from the venom of the Indian scorpion, Buthus tamulus, by ion-exchange chromatography on Biorex-70 and reverse phase high pressure liquid chromatography (RP-HPLC). This 7800 mol. wt protein was found to have an LD50 value of 2.25 mg/kg body weight in mice by subcutaneous injection. Amino acid composition of the protein revealed the presence of aromatic and basic amino acids; the N-terminal amino acid sequence was also determined. Structural characterization of Bt-II, based on circular dichroic and fluorescent quenching studies, has also been reported.
Collapse