(Below N is a link to NCBI taxonomic web page and E link to ESTHER at designed phylum.) > cellular organisms: NE > Eukaryota: NE > Opisthokonta: NE > Metazoa: NE > Eumetazoa: NE > Bilateria: NE > Protostomia: NE > Ecdysozoa: NE > Panarthropoda: NE > Arthropoda: NE > Mandibulata: NE > Pancrustacea: NE > Hexapoda: NE > Insecta: NE > Dicondylia: NE > Pterygota: NE > Neoptera: NE > Holometabola: NE > Diptera: NE > Brachycera: NE > Muscomorpha: NE > Eremoneura: NE > Cyclorrhapha: NE > Schizophora: NE > Calyptratae: NE > Oestroidea: NE > Tachinidae: NE > Exoristinae: NE > Exoristini: NE > Exorista: NE > Exorista sorbillans: NE
LegendThis sequence has been compared to family alignement (MSA) red => minority aminoacid blue => majority aminoacid color intensity => conservation rate title => sequence position(MSA position)aminoacid rate Catalytic site Catalytic site in the MSA MARFVKSSSSASCLSATTTFLPSASLSRSKVTLTSSSRNARSDVRNFFYA FASLKRPSLSSLTQTSPNEFYRSFFATLVILLRMSSVAYGITDRLIVQTT SGPVRGRSVSVQGHEVHVFTGIPYAKPPVEDLRFRKPVPAEPWHGVLDAT RLPATCVQERYEYFPGFSGEEIWNPNTNVSEDCLYINIWAPVKAHLRHGR GTNGNDHAGKADSEHLIFSAKPPQNTTNGLPVLIWIYGGGFMTGSATLNI YNADIMAALGNVVVASFQYRVGAFGFLHLSPVMPGNEEEAPGNVGLWDQA LALRWLKENARAFGGNPEWMTLFGESAGSSSVNAQLVSPVTRGLVKRGMM QSGTMNAPWSHMTSEKAVEIGKALINDCNCNASLLSENPQAVMACMRSVD AKTISVQQWNSYSGILSFPSGPTIDGAFLPADPMTMMKTANMTGYDIMIG NVRDEGTYFLLYDFIDYFDKDEATSLPRDKYLEIMNNIFNKATQAEREAI IFQYTSWEGNPGYQNQQEIGRAVGDHFFTCPTNEYAQALAERGAQVHYYY FTHRTSTSLWGEWMGVLHGDEIEYFFGQPLNTSLQYRPVERELGKRMLNS VIEFAKTGKPAVEGEEWPSFSKEDPVYYVFSTEEKTEKLQRGPLAKRCSF WNDYLPKVRSWVGSECENSNSASAAVAITYEQQHLVKWVIMLTIMVKSIF Q
Reference
Title: Molecular characterization and inhibition analysis of the acetylcholinesterase gene from the silkworm maggot, Exorista sorbillans Lang GJ, Zhang MY, Li BL, Yu LL, Lu XM, Zhang CX Ref: BMB Rep, 43:573, 2010 : PubMed
Several organophosphorus (OP) insecticides can selectively kill the silkworm maggot, Exorista sorbillans (Es) (Diptera: Tachinidae), while not obviously affecting the host (Bombyx mori) larvae, but the mechanism is not yet clear. In this study, the cDNA encoding an acetylcholinesterase (AChE) from the field Es was isolated. One point mutation (Gly353Ala) was identified. The Es-353G AChE and Es-353A AChE were expressed in baculovirus- insect cell system, respectively. The inhibition results showed that for eserine and Chlorpyrifos, Es-353A AChE was significantly less sensitive than Es-353G AChE. Meanwhile, comparison of the I(50) values of eserine, dichlorvos, Chlorpyrifos and omethoate of recombinant Es AChEs with its host (Bombyx mori) AChEs indicated that, both Es AChEs are more sensitive than B. mori AChEs. The results give an insight of the mechanism that some OP insecticides can selectively kills Es while without distinct effect on its host, B. mori.