Title:Identification and Phylogenetic Analysis of Venom Allergens from
Transcriptome of Hemiscorpius lepturus Scorpion
Volume: 4
Author(s): Fatemeh Kazemi-Lomedasht*, Delavar Shahbazzadeh and Mahdi Behdani
Affiliation:
- Venom and Biotherapeutics Molecules Laboratory, Department of Biotechnology, Biotechnology Research Center,
Pasteur Institute of Iran, Tehran, Iran
Keywords:
Venom, allergen, phylogeny, scorpion, transcriptome, Hemiscorpius lepturus.
Abstract:
Introduction: Venom allergens have been identified in the venom of scorpion, snake, bee,
wasp, etc. Some allergy reactions in humans may refer to the venom allergens.
Aim: Phylogenetic analysis of venom allergens from the transcriptome of Hemiscorpius lepturus scorpion
was the main aim of the study.
Methods: Seven venom allergens: HLAllergen1, HLAllergen2, HLAllergen3, HLAllergen4, HLAllergen5,
HLAllergen6, and HLAllergen7 have been identified in the venom of Hemiscorpius lepturus
scorpion using venom gland transcriptome analysis. Primary, secondary and tertiary structures of the
identified venom allergens were predicted using ExPASy ProtParam, PSIPRED, and SWISS MODEL
servers. Phylogenetic tree was constructed using MEGA 11 software through neighbor-joining method
with 1000 bootstraps.
Results: Structure analysis of identified venom allergens showed a molecular weight of between 46 to
52 kDa. Tertiary structure results showed that all predicted 3-D structures were in a normal range.
Phylogenetic tree analysis showed that HLAllergen 3, 4 and 5 were formed single clades and HLAllergen
1, 2, 7, and 6 other clades.
Conclusion: However, further studies using proteomic analysis of H. lepturus are needed to confirm
and compare with transcriptome data.