All newly synthesized cDNA were collected together for the subsequently qPCR reactions. Quantitative real time PCR (q-PCR) of RNA helicase mRNA Quantitative PCR was performed using the QuantiTect SYBR Green PCR kit (Qiagen). We used 1 μl of cDNA in a final volume of 25 μl; a triplicate for each gene was performed. The primers used for this determination (0.6 μM each) were designed based on the FHPI nmr N- or C-terminal extensions because they are highly variable in size and composition,

and have no significant homology between them, making every pair of primers specific for each helicase as shown in Figures 2, 3 and 4 (red bars). Thermal conditions were as follow: initial incubation for 15 min at 95°C, 15 sec at 95°C, 30 sec at 50°C and 30 sec at 72°C for 35 cycles, with the plate read after each cycle, and a final incubation for 10 min at 72°C. The Melting Curve was performed from 50°C to 90°C, with a plate read at every 1°C. We used the Chromo4 system for Real-time PCR detection (BioRad) and the data collected was analyzed using the REST 2009 (Relative selleck products Expression Software Tool V2.0.13 – Qiagen) [89]. RNA was standardized by Selleckchem KU55933 quantification of glutamate dehydrogenase (gdh) as a reference

gene. Protein isolation and Western blot analysis Total protein extraction was performed from the same Trizol extraction procedure, as indicated by the manufacturer. Total protein content was determined with the BCA™ Protein Assay kit (Pierce). Fifty micrograms of total protein was loaded onto a 10% polyacrylamide gel (SDS-PAGE) and after running, it was transferred see more to a PVDF membrane (Immobilon–P, Millipore). The membrane was blocked

with 5% milk in TBS-Tween20 for 1 hour and then incubated with a monoclonal antibody (mAbs 7D6) specific against G. lamblia CWP2 [1:2000]. After three washes with TBS-Tween20, the membrane was incubated with goat anti-mouse immunoglobulin serum conjugated with alkaline phosphatase [1:2000] (Southern Biotechnology) and revealed with alkaline phosphatase substrate (BCIP/NBT, Color Development Solution, BioRad). Accession numbers See Additional file 14: Table S4 for a complete list of proteins cited in the manuscript, organism it is derived and NCBI reference sequence number. Acknowledgements This work was supported by the Agencia Nacional para la Promoción de la Ciencia y la Tecnología (ANPCYT), the Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET) and the Universidad Católica de Córdoba (UCC). The funding bodies had no role in data analysis, writing or decision for submission. Electronic supplementary material Additional file 1: Table S1: Putative SF2 Helicases from Giardia lamblia. The table indicates the Family, the gene number from the Assemblage A isolate WB (the number that is given should be preceded by the prefix GL50803_), the current Supercontig or positions where it is located, the number of nucleotides in base pairs (bp) and molecular mass of the putative protein in kDa, for each putative helicase.