>3U55_1|Chain A|Phosphoribosylaminoimidazole-succinocarboxamide synthase|Pyrococcus horikoshii (70601) MVKLMEVYEGKAKKMIPIDDDKLIMEFKDDATAFDGTKKARFKGKGWLNAQLSVIFFKLLEEHGIKTHFIGVAGGNRLIVEKLDMYPLEVVVRNVVAGSLKKRLPLPEGYELPEPIVELYYKNDELHDPMINYYHAKVLGISLDEIKKIEEIALKVNEILKDYLAKKGIILVDFKLEFGKDKNGDIVLADEISPDTCRFWDAKTKRSLDKDVFRFDKGDLIEAYKEIYERITGEKPEF