Purification and characterization of a novel type of neurotoxic peptides from the venom of the Iranian scorpion Hemiscorpius lepturus | ||
| Iranian Journal of Basic Medical Sciences | ||
| مقاله 7، دوره 23، شماره 2، اردیبهشت 2020، صفحه 195-201 اصل مقاله (676.68 K) | ||
| نوع مقاله: Original Article | ||
| شناسه دیجیتال (DOI): 10.22038/ijbms.2019.37910.9025 | ||
| نویسندگان | ||
| Mahboob Maleki1، 2؛ Naser Mohammadpour Dounighi* 3 | ||
| 1Department of Biochemistry, Fars Science and Research Branch, Islamic Azad University, Fars, Iran | ||
| 2Department of Biochemistry, Shiraz Branch, Islamic Azad University, Shiraz, Iran | ||
| 3Department of Human Vaccine and Serum, Razi Vaccine and Serum Research Institute, Agricultural Research, Education and Extension Organization, Karaj, Iran | ||
| چکیده | ||
| Objective(s): Scorpion venom has toxic effects on mammals, insects and crustaceans. Toxicogenic peptides are major contributors to the scorpion venom, which make it toxic. The Hemiscorpius lepturus (H. lepturus) is one of the most common scorpion bites agent, and responsible for 95% of scorpion bite deaths cases in Iran. Materials and Methods: In this project, we fractionated the H. lepturus scorpion venom and analyzed toxic fractions of the venom. The crude venom of H. lepturus was dialyzed against distilled water and then the soluble part of the venom was isolated from the non-soluble (mucoproteins) part of the venom and loaded onto the Sephadex G-50 gel filtration column, then after determining the toxicity of the obtained fractions (fractions toxicity were detected in mice by IV injection), the resulting toxic fraction was purified with three stages of ion-exchange chromatography (anion and cationic) and RP-HPLC. The purity of the fractions was verified by SDS-PAGE electrophoreses. Results: The LD50 of H. lepturus venom was 177.01 µg/mouse. The crude venom had 7 detectable bands with molecular weights of 10-100 KDa and one band less than 10 KDa. Finally, after the different stages of chromatography, two HL2153 and HL2155 peaks were obtained from the RP-HPLC, which were depicted single bands and high purity. The electrophoretic analysis showed molecular weight 4874 Da for HL2153 and 5107 Da for HL2155 toxins. Conclusion: It is concluded that H. lepturus venom contains two HL2153 and HL2155 toxins with a relatively similar molecular weight and similar electrical charge 4874 and 5107 Da, respectively. | ||
| کلیدواژهها | ||
| Hemiscorpius lepturus؛ Purification؛ Scorpion venom؛ Toxic peptides؛ Toxin | ||
| مراجع | ||
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