FN Archimer Export Format PT J TI Nigritoxin is a bacterial toxin for crustaceans and insects BT AF LABREUCHE, Yannick CHENIVESSE, Sabine JEUDY, Alexandra LE PANSE, Sophie BOULO, Viviane ANSQUER, Dominique PAGES, Sylvie GIVAUDAN, Alain CZJZEK, Mirjam LE ROUX, Frederique AS 1:1,2;2:2;3:2;4:3;5:4;6:4;7:5;8:5;9:2;10:1,2; FF 1:PDG-RBE-PFOM;2:;3:;4:;5:PDG-RBE-LEADNC;6:PDG-RBE-LEADNC;7:;8:;9:;10:PDG-RBE-PFOM; C1 IFREMER, Unite Physiol Fonct Organismes Marins, ZI Pointe Diable, CS 10070, F-29280 Plouzane, France. UPMC Paris 06, CNRS, Sorbonne Univ, UMR 8227,Integrat Biol Marine Models,Stn Biol Ros, CS 90074, F-29688 Roscoff, France. CNRS, Stn Biol Roscoff, FR 2424,Pl Georges Teissier,CS 90074, F-29688 Roscoff, France. IFREMER, Dept Lagons Ecosyst & Aquaculture Durables Nouvel, BP 2059, Noumea 98846, New Caledonia. Univ Montpellier 2, UMR Diversite Genomes & Interact Microorganismes, 2 Pl Eugene Bataillon, F-34095 Montpellier 5, France. C2 IFREMER, FRANCE UNIV PARIS 06, FRANCE CNRS, FRANCE IFREMER, FRANCE UNIV MONTPELLIER, FRANCE SI ROSCOFF SAINT VINCENT SE PDG-RBE-PFOM PDG-RBE-LEADNC IN WOS Ifremer jusqu'en 2018 DOAJ copubli-france copubli-univ-france IF 12.353 TC 7 UR https://archimer.ifremer.fr/doc/00408/51934/52563.pdf https://archimer.ifremer.fr/doc/00408/51934/52564.pdf https://archimer.ifremer.fr/doc/00408/51934/52565.pdf LA English DT Article AB The Tetraconata (Pancrustacea) concept proposes that insects are more closely related to aquatic crustaceans than to terrestrial centipedes or millipedes. The question therefore arises whether insects have kept crustacean-specific genetic traits that could be targeted by specific toxins. Here we show that a toxin (nigritoxin), originally identified in a bacterial pathogen of shrimp, is lethal for organisms within the Tetraconata and non-toxic to other animals. X-ray crystallography reveals that nigritoxin possesses a new protein fold of the α/β type. The nigritoxin N-terminal domain is essential for cellular translocation and likely encodes specificity for Tetraconata. Once internalized by eukaryotic cells, nigritoxin induces apoptotic cell death through structural features that are localized in the C-terminal domain of the protein. We propose that nigritoxin will be an effective means to identify a Tetraconata evolutionarily conserved pathway and speculate that nigritoxin holds promise as an insecticidal protein. PY 2017 PD NOV SO Nature Communications SN 2041-1723 PU Nature Publishing Group VL 8 IS 1 UT 000414229000012 DI 10.1038/s41467-017-01445-z ID 51934 ER EF