hypoxanthine-guanine phosphoribosyltransferase

noun

hy·​po·​xan·​thine-gua·​nine phos·​pho·​ri·​bo·​syl·​trans·​fer·​ase -ˈgwän-ˌēn-ˌfäs-fō-ˌrī-bō-sil-ˈtran(t)s-(ˌ)fər-ˌās, -ˌāz 

: an enzyme that conserves hypoxanthine in the body by limiting its conversion to uric acid and that is lacking in Lesch-Nyhan syndrome

called also hypoxanthine phosphoribosyltransferase