>3laj_A mol:protein length:170 Arginine repressor MSRAKAAPVAGPEVAANRAGRQARIVAILSSAQVRSQNELAALLAAEGIEVTQATLSRD LEELGAVKLRGADGGTGIYVVPEDGSPVRGVSGGTDRMARLLGELLVSTDDSGNLAVLR TPPGAAHYLASAIDRAALPQVVGTIAGDDTILVVAREPTTGAQLAGMFENLR