CTSB and infection: Although GrVAP1 interacts with Rcr3pim and C14tub, two papain‐like cysteine proteases, to promote infections in tomato and potato (Lozano‐Torres et al., 2012, 2014), the homologous protein HaVAP1‐sp did not interact with any papain‐like cysteine protease from H. vulgare in Y2H assays.