Schematic diagram of the DEAD-box RNA helicase family in G. lamblia . Each motif is represented by a different color. The distances between the motifs, and the size of the N- and C- terminal extensions for each ORF, are indicated (number of aa). The red bars within the N- or C-terminal extensions represent the regions amplified with specific primers for the qPCR. The representation is to scale. Inset: sequence LOGO view of the consensus amino acids. The height of each amino acid represents the degree of conservation. Colors mark properties of the amino acids as follows: green (polar), blue (basic), red (acidic) and black (hydrophobic).