Organism
Aggregatibacter actinomycetemcomitans
Function
Virulence factor that plays an important role in immune evasion. Lyses human lymphocytes and monocytes. Binds to the LFA-1 integrin on the surface of the host cell and to cholesterol-containing membranes, which probably results in large LtxA-LFA-1 clusters in lipid rafts. Shows also beta-hemolytic activity on certain types of growth media.
Similarity
Belongs to the RTX prokaryotic toxin (TC 1.C.11) family.
Sequence
MATTTLPNTKQQAAQFANSVADRAKENIDAAKEQLQKALDKLGKTGKKLTLYIPKNYKKGNGLTALIKAAQKLGIEVYHEGKDGPALTNGILNTGKKLLGLTERGLTLFAPELDKWIQGNKHLSNSVGSTGNLTKAIDKVQSVLGTLQAFLNTAFSGMDLDALIKARQNGKNVTDVQLAKASLNLINELIGTISSITNNVDTFSKQLNKLGEALGQVKHFGSFGDKLKNLPKLGNLGKGLGALSGVLSAISAALLLANKDADTATKAAAAAELTNKVLGNIGKAITQYLIAQRAAAGLSTTGPVAGLIASVVSLAISPLSFLGIAKQFDRARMLEEYSKRFKKFGYNGDSLLGQFYKNTGIADAAITTINTVLSAIAAGVGAASAGSLVGAPIGLLVSAITSLISGILDASKQAVFEHIANQLADKIKAWENKYGKNYFENGYDARHSAFLEDSLKLFNELREKYKTENILSITQQGWDQRIGELAGITRNGDRIQSGKAYVDYLKKGEELAKHSDKFTKQILDPIKGNIDLSGIKGSTTLTFLNPLLTAGKEERKTRQSGKYEFITELKVKGRTDWKVKGVPNSNGVYDFSNLIQHAVTRDNKVLEARLIANLGAKDDYVFVGSGSTIVNAGDGYDVVDYSKGRTGALTIDGRNATKAGQYKVERDLSGTQVLQETVSKQETKRGKVTDLLEYRNYKLDYYYTNKGFKAHDELNSVEEIIGSTLRDKFYGSKFNDVFHGHDGDDLIYGYDGDDRLYGDNGNDEIHGGQGNDKLYGGAGNDRLFGEYGNNYLDGGEGDDHLEGGNGSDILRGGSGNDKLFGNQGDDLLDGGEGDDQLAGGEGNDIYVYRKEYGHHTITEHSGDKDKLSLANINLKDVSFERNGNDLLLKTNNRTAVTFKGWFSKPNSSAGLDEYQRKLLEYAPEKDRARLKRQFELQRGKVDKSLNNKVEEIIGKDGERITSQDIDNLFDKSGNKKTISPQELAGLIKNKGKSSSLMSSSRSSSMLTQKSGLSNDISRIISATSGFGSSGKALSASPLQTNNNFNSYANSLATTA