Hypoxanthine-guanine-xanthine phosphoribosyltransferase (HGXPRT) from Sulfolobus solfataricus in complex with alpha-phosphoribosylpyrophosphoric acid (PRPP) and Magnesium
4z1o is a 2 chain structure with sequence from Saccharolobus solfataricus 98/2. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.