From Wikipedia, the free encyclopedia
Hypoxanthine-guanine phosphoribosyltransferase (HPRT[1]) is an enzyme in purine metabolism.
[edit] Functions
It catalyzes the following reactions:
The enzyme primarily functions to salvage purines from degraded DNA to renewed purine synthesis. In this role, it acts as a catalyst in the reaction between guanine and phosphoribosyl pyrophosphate (PRPP) to form GMP.
B cells contain this enzyme which enables them to survive when fused to myeloma cells when grown on HAT medium to produce monoclonal antibodies.
[edit] Role in disease
Mutations in the gene lead to hyperuricemia:
- Lesch-Nyhan syndrome is due to HPRT mutations.
- Some mutations have been linked to gout, the risk of which is increased in hyperuricemia.
[edit] See also
[edit] References
[edit] Further reading
- Sculley DG, Dawson PA, Emmerson BT, Gordon RB (1993). "A review of the molecular basis of hypoxanthine-guanine phosphoribosyltransferase (HPRT) deficiency.". Hum. Genet. 90 (3): 195-207. PMID 1487231.
- Davidson BL, Tarlé SA, Van Antwerp M, et al. (1991). "Identification of 17 independent mutations responsible for human hypoxanthine-guanine phosphoribosyltransferase (HPRT) deficiency.". Am. J. Hum. Genet. 48 (5): 951-8. PMID 2018042.
- Stout JT, Caskey CT (1986). "HPRT: gene structure, expression, and mutation.". Annu. Rev. Genet. 19: 127-48. doi:10.1146/annurev.ge.19.120185.001015. PMID 3909940.
- Sege-Peterson K, Chambers J, Page T, et al. (1993). "Characterization of mutations in phenotypic variants of hypoxanthine phosphoribosyltransferase deficiency.". Hum. Mol. Genet. 1 (6): 427-32. doi:10.1093/hmg/1.6.427. PMID 1301916.
- Lightfoot T, Joshi R, Nuki G, Snyder FF (1992). "The point mutation of hypoxanthine-guanine phosphoribosyltransferase (HPRTEdinburgh) and detection by allele-specific polymerase chain reaction.". Hum. Genet. 88 (6): 695-6. doi:10.1007/BF02265300. PMID 1551676.
- Yamada Y, Goto H, Ogasawara N (1992). "Identification of two independent Japanese mutant HPRT genes using the PCR technique.". Adv. Exp. Med. Biol. 309B: 121-4. PMID 1840476.
- Sculley DG, Dawson PA, Beacham IR, et al. (1991). "Hypoxanthine-guanine phosphoribosyltransferase deficiency: analysis of HPRT mutations by direct sequencing and allele-specific amplification.". Hum. Genet. 87 (6): 688-92. doi:10.1007/BF00201727. PMID 1937471.
- Tarlé SA, Davidson BL, Wu VC, et al. (1991). "Determination of the mutations responsible for the Lesch-Nyhan syndrome in 17 subjects.". Genomics 10 (2): 499-501. doi:10.1016/0888-7543(91)90341-B. PMID 2071157.
- Gordon RB, Sculley DG, Dawson PA, et al. (1991). "Identification of a single nucleotide substitution in the coding sequence of in vitro amplified cDNA from a patient with partial HPRT deficiency (HPRTBRISBANE).". J. Inherit. Metab. Dis. 13 (5): 692-700. doi:10.1007/BF01799570. PMID 2246854.
- Edwards A, Voss H, Rice P, et al. (1990). "Automated DNA sequencing of the human HPRT locus.". Genomics 6 (4): 593-608. doi:10.1016/0888-7543(90)90493-E. PMID 2341149.
- Gibbs RA, Nguyen PN, Edwards A, et al. (1990). "Multiplex DNA deletion detection and exon sequencing of the hypoxanthine phosphoribosyltransferase gene in Lesch-Nyhan families.". Genomics 7 (2): 235-44. doi:10.1016/0888-7543(90)90545-6. PMID 2347587.
- Skopek TR, Recio L, Simpson D, et al. (1990). "Molecular analyses of a Lesch-Nyhan syndrome mutation (hprtMontreal) by use of T-lymphocyte cultures.". Hum. Genet. 85 (1): 111-6. doi:10.1007/BF00276334. PMID 2358296.
- Davidson BL, Tarlé SA, Palella TD, Kelley WN (1989). "Molecular basis of hypoxanthine-guanine phosphoribosyltransferase deficiency in ten subjects determined by direct sequencing of amplified transcripts.". J. Clin. Invest. 84 (1): 342-6. doi:10.1172/JCI114160. PMID 2738157.
- Ogasawara N, Stout JT, Goto H, et al. (1989). "Molecular analysis of a female Lesch-Nyhan patient.". J. Clin. Invest. 84 (3): 1024-7. doi:10.1172/JCI114224. PMID 2760209.
- Yang TP, Stout JT, Konecki DS, et al. (1988). "Spontaneous reversion of novel Lesch-Nyhan mutation by HPRT gene rearrangement.". Somat. Cell Mol. Genet. 14 (3): 293-303. doi:10.1007/BF01534590. PMID 2835825.
- Fujimori S, Hidaka Y, Davidson BL, et al. (1988). "Identification of a single nucleotide change in a mutant gene for hypoxanthine-guanine phosphoribosyltransferase (HPRT Ann Arbor).". Hum. Genet. 79 (1): 39-43. doi:10.1007/BF00291707. PMID 2896620.
- Davidson BL, Pashmforoush M, Kelley WN, Palella TD (1989). "Human hypoxanthine-guanine phosphoribosyltransferase deficiency. The molecular defect in a patient with gout (HPRTAshville).". J. Biol. Chem. 264 (1): 520-5. PMID 2909537.
- Fujimori S, Davidson BL, Kelley WN, Palella TD (1989). "Identification of a single nucleotide change in the hypoxanthine-guanine phosphoribosyltransferase gene (HPRTYale) responsible for Lesch-Nyhan syndrome.". J. Clin. Invest. 83 (1): 11-3. doi:10.1172/JCI113846. PMID 2910902.
[edit] External links