>tr|A0A0E1SX65|A0A0E1SX65_ECOLX Xanthine-guanine phosphoribosyltransferase OS=Escherichia coli 53638 GN=gpt MSEKYIVTWDMLQIHARKLASRLMPSEQWKGIIAVSRGGLVPGALLARELGIRHVDTVCI SSYDHDNQRELKVLKRAEGDGEGFIVIDDLVDTGGTAVAIREMYPKAHFVTIFAKPAGRP LVDDYVVDIPQDTWIEQPWDMGVVFVPPISGR