Comprehensive comparative information of two prawn GSTs reported.
Macrobrachium rosenbergii GST delta and kappa differed in their size, motifs and structure.
Both MrGSTD and MrGSTK mRNA were highly expressed in prawn immune organs.
The mRNA of MrGSTD and MrGSTK was modulated by oxidative stressors.
The results conferring their involvement in defense protection in prawn.