Fig. 3.

Partial region of the Ct helicase domain of BMV 1a. a Best alignment obtained by 3D-PSSM with the sequence of ATP-dependent RNA helicase MjDEAD from M. jannaschii (helicase belonging to the SF2, PDB code 1hv8). b Alignment obtained by manual alignment of the helicase motifs found in BMV 1a sequence with the of ATP-dependent DNA helicase PcrA from Geobacillus stearothermophilus (helicase belonging to SF1, PDB code 3pjr). The sequences corresponding to motif I, motif Ia, motif II, motif III, and motif IV are colored and hinted in bold.