3ACB:
reference: Structures of hypoxanthine-guanine phosphoribosyltransferase (TTHA0220) from Thermus thermophilus HB8., Kanagawa M, Baba S, Ebihara A, Shinkai A, Hirotsu K, Mega R, Kim K, Kuramitsu S, Sampei G, Kawai G, Acta Crystallogr Sect F Struct Biol Cryst Commun. 2010 Aug 1;66(Pt, 8):893-8. Epub 2010 Jul 27. PMID: 20693661

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