{"refrec":{"BRefID":293747,"RR":"<b>Delroisse, J.; Ullrich-Luter, E.; Blaue, S.; Ortega-Martinez, O.; Eeckhaut, I.; Flammang, P.; Mallefet, J.</b> (2017). A puzzling homology: a brittle star using a putative cnidarian-type luciferase for bioluminescence. <i>Open Biology 7(4)</i>: 160300. <a href=\"https://dx.doi.org/10.1098/rsob.160300\" target=\"_blank\">https://dx.doi.org/10.1098/rsob.160300</a>","BEntID":285811,"PublicFlag":1,"CheckedFlag":1,"wosflag":1,"vabbflag":null,"RefStringPartII":". <i>Open Biology 7(4)</i>: 160300. <a href=\"https://dx.doi.org/10.1098/rsob.160300\" target=\"_blank\">https://dx.doi.org/10.1098/rsob.160300</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Delroisse, J.; Ullrich-Luter, E.; Blaue, S.; Ortega-Martinez, O.; Eeckhaut, I.; Flammang, P.; Mallefet, J.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Delroisse, J. <i>et al.</i>","Englishabstract":"Bioluminescence relies on the oxidation of a luciferin substrate catalysed by a luciferase enzyme. Luciferins and luciferases are generic terms used to describe a large variety of substrates and enzymes. Whereas luciferins can be shared by phylogenetically distant organisms which feed on organisms producing them, luciferases have been thought to be lineage-specific enzymes. Numerous light emission systems would then have co-emerged independently along the tree of life resulting in a plethora of non-homologous luciferases. Here, we identify for the first time a candidate luciferase of a luminous echinoderm, the ophiuroid <i>Amphiura filiformis</i>. Phylogenomic analyses identified the brittle star predicted luciferase as homologous to the luciferase of the sea pansy <i>Renilla</i> (Cnidaria), contradicting with the traditional viewpoint according to which luciferases would generally be of convergent origins. The similarity between the <i>Renilla</i> and <i>Amphiura</i> luciferases allowed us to detect the latter using anti-<i>Renilla</i> luciferase antibodies. Luciferase expression was specifically localized in the spines which were demonstrated to be the bioluminescent organs <i>in vivo</i>. However, enzymes homologous to the <i>Renilla</i> luciferase but unable to trigger light emission were also identified in non-luminous echinoderms and metazoans. Our findings strongly indicate that those enzymes, belonging to the haloalkane dehalogenase family, might then have been convergently co-opted into luciferases in cnidarians and echinoderms. In these two benthic suspension-feeding species, similar ecological pressures would constitute strong selective forces for the functional shift of these enzymes and the emergence of bioluminescence.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"A puzzling homology: a brittle star using a putative cnidarian-type luciferase for bioluminescence","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2024-12-10 01:33:01.897972","timezone_type":1,"timezone":"+01:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":"bioluminescence; luciferase; evolution; echinoderm","OtherDescriptors":null,"Notes":null,"AnaPub":2017,"MonPub":null,"DateUpdate":"2018-03-22","DateCreate":"2018-03-12","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:000402540300003","VABBcode":null,"OpenAcc":1,"DOI":"10.1098/rsob.160300"},"refs":null,"anarec":{"AnaID":293747,"PubliDate":2017,"Pagination":"160300","XtraPublOfAnaID":null,"ISBN":null,"Volume":"7","Issue":"4","BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":275737,"SerRR":"Open Biology. 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