6533b851fe1ef96bd12a947c

RESEARCH PRODUCT

First evidence of antimicrobial activity of neurotoxin 2 from anemonia sulcata (Cnidaria)

Maria Rosa TrapaniM. Giovanna ParisiMylene ToubianaLaurent CoquetThierry JouennePhilippe RochM. Cammarata

subject

lcsh:Biology (General)antimicrobial peptideMicrococcus lysodeikticusneurotoxin[SDU.STU.HY]Sciences of the Universe [physics]/Earth Sciences/Hydrologylcsh:QH301-705.5antimicrobial peptide; Anemonia sulcata; ATX II; neurotoxin; Micrococcus lysodeikticusATX IIAnemonia sulcata

description

International audience; We investigated the antibacterial activity of Anemonia sulcata (Cnidaria, Anthozoa) tentacle and body acidic extracts. Biochemical purification consisted of first step on solid phase Sep-Pak C8 column followed by several HPLC runs on C18 column using different conditions. Anti-Micrococcus lysodeikticus activity has been detected in 40 % acetonitrile fractions. The resulting purified molecule from tentacles had a molecular mass determined by MALDI-TOF mass spectrum of 4946,299 Da and has been completely sequenced. Its aa sequence revealed identity with the Neurotoxin 2 (ATX-II), a Na + channel blocking toxins. Consequently, ATX-II appeared to display a dual role as toxin and as antibacterial.

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