ID 2.4.2.8 DE hypoxanthine phosphoribosyltransferase. AN guanine phosphoribosyltransferase. AN HGPRTase. AN hypoxanthine-guanine phosphoribosyltransferase. AN IMP diphosphorylase. AN IMP pyrophosphorylase. AN transphosphoribosidase. CA diphosphate + IMP = 5-phospho-alpha-D-ribose 1-diphosphate + CA hypoxanthine. CC -!- Guanine and purine-6-thiol can replace hypoxanthine. DR O66821, HGPRT_AQUAE; P37472, HGPRT_BACSU; Q839B2, HGPRT_ENTFA; DR Q02522, HGPRT_LACLA; P96794, HGPRT_MYCAV; P0A5T1, HGPRT_MYCBO; DR P47696, HGPRT_MYCGE; O69537, HGPRT_MYCLE; P75119, HGPRT_MYCPN; DR P9WHQ8, HGPRT_MYCTO; P9WHQ9, HGPRT_MYCTU; P37171, HGPRT_RHOCB; DR Q5HIG5, HGPRT_STAAC; P65827, HGPRT_STAAM; P99085, HGPRT_STAAN; DR Q6GJG1, HGPRT_STAAR; Q6GBX8, HGPRT_STAAS; P65828, HGPRT_STAAW; DR Q5HRP4, HGPRT_STAEQ; Q8CQV4, HGPRT_STAES; Q8E7Y1, HGPRT_STRA3; DR Q8E2H3, HGPRT_STRA5; Q8DWM8, HGPRT_STRMU; P0DD40, HGPRT_STRP3; DR Q5XEL6, HGPRT_STRP6; Q7CNQ9, HGPRT_STRP8; Q97TC4, HGPRT_STRPN; DR P0DD41, HGPRT_STRPQ; Q8DRP8, HGPRT_STRR6; Q5M216, HGPRT_STRT1; DR Q5M6K8, HGPRT_STRT2; P20035, HGXR_PLAFG ; P07833, HGXR_PLAFK ; DR Q26997, HGXR_TOXGO ; P51900, HGXR_TRIFO ; B5IAJ6, HPRT_ACIB4 ; DR Q3SZ18, HPRT_BOVIN ; P57291, HPRT_BUCAI ; Q8K9U8, HPRT_BUCAP ; DR Q6WIT9, HPRT_CANLF ; Q9W719, HPRT_CHICK ; Q27541, HPRT_CRIFA ; DR P00494, HPRT_CRIGR ; Q54NJ8, HPRT_DICDI ; P0A9M3, HPRT_ECOL6 ; DR P0A9M2, HPRT_ECOLI ; D3S0H7, HPRT_FERPA ; P45078, HPRT_HAEIN ; DR P00492, HPRT_HUMAN ; P43152, HPRT_LEIDO ; Q6LDD9, HPRT_MACFA ; DR P47959, HPRT_MERUN ; A6UX50, HPRT_META3 ; Q8TSS8, HPRT_METAC ; DR Q0W496, HPRT_METAR ; Q46C14, HPRT_METBF ; Q12W31, HPRT_METBU ; DR D7E9E7, HPRT_METEZ ; C7P7L7, HPRT_METFA ; E3GW42, HPRT_METFV ; DR Q2FSD3, HPRT_METHJ ; F6BB32, HPRT_METIK ; D5VT38, HPRT_METIM ; DR Q59049, HPRT_METJA ; Q8TXQ0, HPRT_METKA ; F0T7W2, HPRT_METLA ; DR A2SPY9, HPRT_METLZ ; A4G043, HPRT_METM5 ; A9A8E9, HPRT_METM6 ; DR A6VID5, HPRT_METM7 ; Q8PVT4, HPRT_METMA ; Q6M0X3, HPRT_METMP ; DR D5E7U7, HPRT_METMS ; F8AJL1, HPRT_METOI ; B8GDM8, HPRT_METPE ; DR D1YVK0, HPRT_METPS ; F6D512, HPRT_METPW ; D3DYU7, HPRT_METRM ; DR D3S8C7, HPRT_METSF ; F4BT36, HPRT_METSG ; O27375, HPRT_METTH ; DR O33174, HPRT_METTM ; A0B870, HPRT_METTP ; D7DQT8, HPRT_METV3 ; DR C9RH78, HPRT_METVM ; A6URC7, HPRT_METVS ; F7XQS2, HPRT_METZD ; DR P00493, HPRT_MOUSE ; Q64531, HPRT_MUSSP ; A5A6I1, HPRT_PANTR ; DR Q45FY6, HPRT_PIG ; P27605, HPRT_RAT ; O33799, HPRT_SALTY ; DR P09383, HPRT_SCHMA ; O13917, HPRT_SCHPO ; P0A9M4, HPRT_SHIFL ; DR Q07010, HPRT_TRYBB ; P18134, HPRT_VIBHA ; Q04178, HPRT_YEAST ; DR Q92F56, TILS_LISIN ; Q724J4, TILS_LISMF ; Q8YAC7, TILS_LISMO ; //