For pull-down experiments using L. amazonensis, a Streptavidin-binding Peptide (SBP) tagging vector pX-H-SBP-H was used. This vector contains an SBP-tag flanked by two intergenic regions derived from the Hsp83 genomic cluster (denoted ‘H’), that promote expression in both life forms. Foreign genes were cloned upstream to the SBP tag. For experiments with L. major a Tandem Affinity Purification (TAP) tagging vector pSNSAP1 (21 (link)) was used, placing the tag in the C-terminus of the target gene. See Supplementary ‘Materials and Methods’ section for plasmids construction details.
Leishmania amazonensis cells were transfected as previously described (22 (link)) with pX-H-LeishIF4E1-SBP-H, pH-LeishIF4E4-SBP-H and pH-LeishIF4EIP-SBP-H and stable cell lines were selected using 100 µg/ml G-418. Leishmania major cells were similarly transfected with pSNSAP1-LeishIF4E-1 or pSNSAP1-LeishIF4E-4, and stable cell lines were selected using 200 µg/ml G-418.
Leishmania amazonensis cells were transfected as previously described (22 (link)) with pX-H-LeishIF4E1-SBP-H, pH-LeishIF4E4-SBP-H and pH-LeishIF4EIP-SBP-H and stable cell lines were selected using 100 µg/ml G-418. Leishmania major cells were similarly transfected with pSNSAP1-LeishIF4E-1 or pSNSAP1-LeishIF4E-4, and stable cell lines were selected using 200 µg/ml G-418.