>sp|A8GAD0|XGPT_SERP5 Xanthine-guanine phosphoribosyltransferase OS=Serratia proteamaculans GN=gpt MSEKYVVTWDMLQMQARKLAHRLLPADQWTGIIAVSRGGLVPAALLARELGIRHVDTVCI SSYDHDNQREMKVLKRAEGDGEGFIVIDDLVDTGGTAKAIREMYPKAHFVTIFAKPAGRP LVDDYVVDIPQDTWIEQPWDMAVTFVPPIGGR