>tr|A0A6N3QP21|A0A6N3QP21_SHIFL Aspartate carbamoyltransferase regulatory chain OS=Shigella flexneri CDC 796-83 GN=pyrI MTHDNKLQVEAIKRGTVIDHIPAQIGFKLLSLFKLTETDQRITIGLNLPSGEMGRKDLIK IENTFLSEDQVDQLALYAPQATVNRIDNYEVVGKSRPSLPERIDNVLVCPNSNCISHAEP VSSSFAVRKRANDIALKCKYCEKEFSHNVVLAN