>4U28_1|Chain A|Phosphoribosyl isomerase A|Streptomyces sviceus ATCC 29083 (463191) MPSKLSRLELLPAVDVRDGQAVRLVHGESGTETSYGSPLEAALSWQRAGAEWLHLVDLDAAFGTGDNRELVRQVTEAMDIKVELSGGIRDDASLAAALATGCTRVNLGTAALESPEWVAKVIAEHGDRIAVGLDVRGTTLKGRGWTSEGGDLYEALERLDKEGCARYVVTDIAKDGTLQGPNLELLRNVCAATDRPVVASGGVSSLDDLRAIAELVPLGVEGSIVGKALYAKAFTLEEALEAVAQ