Multiple alignments of CSPs (A), OBPs (B), and C-OBPs including TcOBP7D (C) made with ClustalW2and visualized with Jalview 2.0.1. OBP8B was manually adapted to fit the conserved cysteine pattern. The N-terminal regions of OBP7C, 8B and 5E are truncated, as well as a portion between C1 and C2 of OBP5A and OBP7C, and the C-terminus of OBP5E and OBP6A (the number of deleted AA is indicated, respectively). Cysteines are indicated by red frames. CSPs are indicated in pink, classic OBPs in black, ABPIIs in grey, C-OBPs in green, and the C + OBP in blue.