Fatty acid-binding proteins in Echinococcus spp.: the family has grown.
Fatty acid-binding proteins (FABPs) are small intracellular proteins that reversibly bind fatty acids and other hydrophobic ligands. In cestodes, due to their inability to synthesise fatty acids de novo, FABPs have been proposed as essential proteins, and thus, as possible drug targets and/or carriers against these parasites. We performed data mining in Echinococcus multilocularis and Echinococcus granulosus genomes in order to test whether this family of proteins is more complex than previously reported. By exploring the genomes of E. multilocularis and E. granulosus, six genes coding for FABPs were found in each organism. In the case of E. granulosus, all of them have different coding sequences, whereas in E. multilocularis, two of the genes code for the same protein. Remarkably, one of the genes (in both cestodes) encodes a FABP with a C-terminal extension unusual for this family of proteins. The newly described genes present variations in their structure in comparison with previously described FABP genes in Echinococcus spp. The coding sequences for E. multilocularis were validated by cloning and sequencing. Moreover, differential expression patterns of FABPs were observed at different stages of the life cycle of E. multilocularis by exploring transcriptomic data from several sources. In summary, FABP family in cestodes is far more complex than previously thought and includes new members that seem to be only present in flatworms.
['Pórfido|Jorge L|JL|', 'Herz|Michaela|M|', 'Kiss|Ferenc|F|', 'Kamenetzky|Laura|L|', 'Brehm|Klaus|K|', 'Rosenzvit|Mara C|MC|', 'Córsico|Betina|B|', 'Franchini|Gisela R|GR|http://orcid.org/0000-0002-8355-357X']
D000595:Amino Acid Sequence D000818:Animals D001483:Base Sequence D016054:DNA, Protozoan D048209:Echinococcus granulosus D048210:Echinococcus multilocularis D050556:Fatty Acid-Binding Proteins D005227:Fatty Acids D018503:Genome, Protozoan D017421:Sequence Analysis D017422:Sequence Analysis, DNA D059467:Transcriptome
FABPs Fatty acids Cestodes Echinococcus multilocularis