SLC52A1 and infection: Results of the infection experiments revealed that seven mutations significantly decreased (p < 0.05) HuPAR2 function, expressed here as a percent of wild-type function: T5P (55%), D40E (36%), P73R (39%), Q82R (58%), QLH(108–110)KPY (0%), L119F (58%) and T127A (46%).