Bioinformatic analysis of a novel Echinococcus granulosus nuclear receptor with two DNA binding domains

Autoři: Gabriela Alvite aff001;  Ximena Riera aff001;  Saira Cancela aff001;  Margot Paulino aff002;  Adriana Esteves aff001
Působiště autorů: Biochemistry Section, Faculty of Sciences, Universidad de la República, Montevideo, Uruguay aff001;  Center of Bioinformatics, Departamento de Experimentación y Teoría de la Materia, Faculty of Chemistry, Universidad de la República, Montevideo, Uruguay aff002
Vyšlo v časopise: PLoS ONE 14(11)
Kategorie: Research Article
doi: 10.1371/journal.pone.0224703


Nuclear receptors are ligand-activated transcription factors capable of regulating the expression of complex gene networks. The family includes seven subfamilies of proteins with a wide phylogenetic distribution. A novel subfamily with two DNA-binding domains (2DBDs) has been reported in Schistosoma mansoni (Platyhelminth, Trematoda). This work describes the cDNA cloning and bioinformatics analysis of Eg2DBDα, a 2DBD nuclear receptor isoform from the parasite Echinococcus granulosus (Platyhelminth, Cestoda). The Eg2DBDα gene coding domain structure was analysed. Although two additional 2DBD nuclear receptors are reported in the parasite database GeneDB, they are unlikely to be expressed in the larval stage. Phylogenetic relationships between these atypical proteins from different cestodes are also analysed including S. mansoni 2DBD nuclear receptors. The presence of two DNA binding domains confers particular interest to these nuclear receptors, not only concerning their function but to the development of new antihelminthic drugs.

Klíčová slova:

Cestodes – DNA sequence analysis – DNA-binding proteins – Protein domains – Sequence alignment – Sequence databases – Sequence motif analysis – Schistosoma mansoni


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