7.4.2.2	malfunction	deletion of isoform BrnQ2 results in increased virulence, including severe kidney pathology	
7.4.2.2	physiological function	LivJ and LivK are required for optimal commensal colonization of the chick ceca	
7.4.2.2	physiological function	isoform BrnQ1 is required for Staphylococcus aureus strain USA300 fitness in vivo	
7.4.2.2	physiological function	the enzyme contributes to salt stress-induced proline uptake from exogenous sources. In addition, proline uptake promotes salt tolerance in Arabidopsis seedlings