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Barassé V, Téné N, Klopp C, Paquet F, Tysklind N, Troispoux V, Lalägue H, Orivel J, Lefranc B, Leprince J, Kenne M, Tindo M, Treilhou M, Touchard A, Bonnafé E. Venomics survey of six myrmicine ants provides insights into the molecular and structural diversity of their peptide toxins. Insect Biochem Mol Biol 2022; 151:103876. [PMID: 36410579 DOI: 10.1016/j.ibmb.2022.103876] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Revised: 11/11/2022] [Accepted: 11/11/2022] [Indexed: 06/16/2023]
Abstract
Among ants, Myrmicinae represents the most speciose subfamily. The venom composition previously described for these social insects is extremely variable, with alkaloids predominant in some genera while, conversely, proteomics studies have revealed that some myrmicine ant venoms are peptide-rich. Using integrated transcriptomic and proteomic approaches, we characterized the venom peptidomes of six ants belonging to the different tribes of Myrmicinae. We identified a total of 79 myrmicitoxins precursors which can be classified into 38 peptide families according to their mature sequences. Myrmicine ant venom peptidomes showed heterogeneous compositions, with linear and disulfide-bonded monomers as well as dimeric toxins. Several peptide families were exclusive to a single venom whereas some were retrieved in multiple species. A hierarchical clustering analysis of precursor signal sequences led us to divide the myrmicitoxins precursors into eight families, including some that have already been described in other aculeate hymenoptera such as secapin-like peptides and voltage-gated sodium channel (NaV) toxins. Evolutionary and structural analyses of two representatives of these families highlighted variation and conserved patterns that might be crucial to explain myrmicine venom peptide functional adaptations to biological targets.
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Affiliation(s)
- Valentine Barassé
- EA-7417, Institut National Universitaire Champollion, Place de Verdun, 81012, Albi, France.
| | - Nathan Téné
- EA-7417, Institut National Universitaire Champollion, Place de Verdun, 81012, Albi, France.
| | - Christophe Klopp
- Unité de Mathématique et Informatique Appliquées de Toulouse, UR0875, Genotoul Bioinfo, INRAE Toulouse, 31326, Castanet-Tolosan, France.
| | - Françoise Paquet
- Centre de Biophysique Moléculaire - CNRS - UPR 4301, 45071, Orléans, France.
| | - Niklas Tysklind
- INRAE, UMR EcoFoG (Agroparistech, CNRS, Cirad, Université des Antilles, Université de la Guyane), Campus Agronomique, 97310, Kourou, French Guiana.
| | - Valérie Troispoux
- INRAE, UMR EcoFoG (Agroparistech, CNRS, Cirad, Université des Antilles, Université de la Guyane), Campus Agronomique, 97310, Kourou, French Guiana.
| | - Hadrien Lalägue
- CNRS, UMR EcoFoG (AgroParisTech, CNRS, CIRAD, INRAE, Université des Antilles, Université de Guyane), 97310, Kourou, France.
| | - Jérôme Orivel
- CNRS, UMR EcoFoG (AgroParisTech, CNRS, CIRAD, INRAE, Université des Antilles, Université de Guyane), 97310, Kourou, France.
| | - Benjamin Lefranc
- Inserm U 1239, Normandie Univ, UNIROUEN, Plate-forme de Recherche en Imagerie Cellulaire Normandie (PRIMACEN), 76000, Rouen, France.
| | - Jérôme Leprince
- Inserm U 1239, Normandie Univ, UNIROUEN, Plate-forme de Recherche en Imagerie Cellulaire Normandie (PRIMACEN), 76000, Rouen, France.
| | - Martin Kenne
- Laboratory of Animal Biology and Physiology, Faculty of Science, University of Douala, P.O.Box. 24157, Douala, Cameroon.
| | - Maurice Tindo
- Laboratory of Animal Biology and Physiology, Faculty of Science, University of Douala, P.O.Box. 24157, Douala, Cameroon.
| | - Michel Treilhou
- EA-7417, Institut National Universitaire Champollion, Place de Verdun, 81012, Albi, France.
| | - Axel Touchard
- EA-7417, Institut National Universitaire Champollion, Place de Verdun, 81012, Albi, France; CNRS, UMR EcoFoG (AgroParisTech, CNRS, CIRAD, INRAE, Université des Antilles, Université de Guyane), 97310, Kourou, France.
| | - Elsa Bonnafé
- EA-7417, Institut National Universitaire Champollion, Place de Verdun, 81012, Albi, France.
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