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4ijq

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Human hypoxanthine-guanine phosphoribosyltransferase in complex with [(2-((Guanine-9H-yl)methyl)propane-1,3-diyl)bis(oxy)]bis(methylene))diphosphonic acidHuman hypoxanthine-guanine phosphoribosyltransferase in complex with [(2-((Guanine-9H-yl)methyl)propane-1,3-diyl)bis(oxy)]bis(methylene))diphosphonic acid

Structural highlights

4ijq is a 4 chain structure with sequence from Homo sapiens. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:, ,
Resources:FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Disease

HPRT_HUMAN Defects in HPRT1 are the cause of Lesch-Nyhan syndrome (LNS) [MIM:300322. LNS is characterized by complete lack of enzymatic activity that results in hyperuricemia, choreoathetosis, mental retardation, and compulsive self-mutilation.[1] [2] [3] [4] [5] [6] [7] [8] [9] [10] Defects in HPRT1 are the cause of gout HPRT-related (GOUT-HPRT) [MIM:300323; also known as HPRT-related gout or Kelley-Seegmiller syndrome. Gout is characterized by partial enzyme activity and hyperuricemia.[11] [12] [13] [14] [15] [16] [:]

Function

HPRT_HUMAN Converts guanine to guanosine monophosphate, and hypoxanthine to inosine monophosphate. Transfers the 5-phosphoribosyl group from 5-phosphoribosylpyrophosphate onto the purine. Plays a central role in the generation of purine nucleotides through the purine salvage pathway.

Publication Abstract from PubMed

Acyclic nucleoside phosphonates (ANPs) that contain a 6-oxopurine base are good inhibitors of the Plasmodium falciparum (Pf) and Plasmodium vivax (Pv) 6-oxopurine phosphoribosyltransferases (PRTs). Chemical modifications based on the crystal structure of 2-(phosphonoethoxy)ethylguanine (PEEG) in complex with human HGPRT have led to the design of new ANPs. These novel compounds contain a second phosphonate group attached to the ANP scaffold. {[(2-[(Guanine-9H-yl)methyl]propane-1,3-diyl)bis(oxy)]bis(methylene)}diphosphonic acid (compound 17) exhibited a Ki value of 30 nM for human HGPRT and 70 nM for Pf HGXPRT. The crystal structure of this compound in complex with human HGPRT shows that it fills or partially fills three critical locations in the active site: the binding sites of the purine base, the 5'-phosphate group, and pyrophosphate. This is the first HG(X)PRT inhibitor that has been able to achieve this result. Prodrugs have been synthesized resulting in IC50 values as low as 3.8 muM for Pf grown in cell culture, up to 25-fold lower compared to the parent compounds.

Acyclic Nucleoside Phosphonates Containing a Second Phosphonate Group Are Potent Inhibitors of 6-Oxopurine Phosphoribosyltransferases and Have Antimalarial Activity.,Keough DT, Spacek P, Hockova D, Tichy T, Vrbkova S, Slavetinska L, Janeba Z, Naesens L, Edstein MD, Chavchich M, Wang TH, de Jersey J, Guddat LW J Med Chem. 2013 Mar 19. PMID:23448281[17]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

See Also

References

  1. ↑ Wilson JM, Kelley WN. Molecular basis of hypoxanthine-guanine phosphoribosyltransferase deficiency in a patient with the Lesch-Nyhan syndrome. J Clin Invest. 1983 May;71(5):1331-5. PMID:6853716
  2. ↑ Davidson BL, Pashmforoush M, Kelley WN, Palella TD. Genetic basis of hypoxanthine guanine phosphoribosyltransferase deficiency in a patient with the Lesch-Nyhan syndrome (HPRTFlint). Gene. 1988 Mar 31;63(2):331-6. PMID:3384338
  3. ↑ Davidson BL, Palella TD, Kelley WN. Human hypoxanthine-guanine phosphoribosyltransferase: a single nucleotide substitution in cDNA clones isolated from a patient with Lesch-Nyhan syndrome (HPRTMidland). Gene. 1988 Aug 15;68(1):85-91. PMID:3265398
  4. ↑ Fujimori S, Davidson BL, Kelley WN, Palella TD. Identification of a single nucleotide change in the hypoxanthine-guanine phosphoribosyltransferase gene (HPRTYale) responsible for Lesch-Nyhan syndrome. J Clin Invest. 1989 Jan;83(1):11-3. PMID:2910902 doi:http://dx.doi.org/10.1172/JCI113846
  5. ↑ Gibbs RA, Nguyen PN, Edwards A, Civitello AB, Caskey CT. Multiplex DNA deletion detection and exon sequencing of the hypoxanthine phosphoribosyltransferase gene in Lesch-Nyhan families. Genomics. 1990 Jun;7(2):235-44. PMID:2347587
  6. ↑ Skopek TR, Recio L, Simpson D, Dallaire L, Melancon SB, Ogier H, O'Neill JP, Falta MT, Nicklas JA, Albertini RJ. Molecular analyses of a Lesch-Nyhan syndrome mutation (hprtMontreal) by use of T-lymphocyte cultures. Hum Genet. 1990 Jun;85(1):111-6. PMID:2358296
  7. ↑ Gordon RB, Sculley DG, Dawson PA, Beacham IR, Emmerson BT. 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. 1990;13(5):692-700. PMID:2246854
  8. ↑ Tarle SA, Davidson BL, Wu VC, Zidar FJ, Seegmiller JE, Kelley WN, Palella TD. Determination of the mutations responsible for the Lesch-Nyhan syndrome in 17 subjects. Genomics. 1991 Jun;10(2):499-501. PMID:2071157
  9. ↑ Burgemeister R, Rotzer E, Gutensohn W, Gehrke M, Schiel W. Identification of a new missense mutation in exon 2 of the human hypoxanthine phosphoribosyltransferase gene (HPRTIsar): a further example of clinical heterogeneity in HPRT deficiencies. Hum Mutat. 1995;5(4):341-4. PMID:7627191 doi:http://dx.doi.org/10.1002/humu.1380050413
  10. ↑ Liu G, Aral B, Zabot MT, Kamoun P, Ceballos-Picot I. The molecular basis of hypoxanthine-guanine phosphoribosyltransferase deficiency in French families; report of two novel mutations. Hum Mutat. 1998;Suppl 1:S88-90. PMID:9452051
  11. ↑ Wilson JM, Kobayashi R, Fox IH, Kelley WN. Human hypoxanthine-guanine phosphoribosyltransferase. J Biol Chem. 1983 May 25;258(10):6458-60. PMID:6853490
  12. ↑ Wilson JM, Tarr GE, Kelley WN. Human hypoxanthine (guanine) phosphoribosyltransferase: an amino acid substitution in a mutant form of the enzyme isolated from a patient with gout. Proc Natl Acad Sci U S A. 1983 Feb;80(3):870-3. PMID:6572373
  13. ↑ Wilson JM, Kelley WN. Human hypoxanthine-guanine phosphoribosyltransferase. Structural alteration in a dysfunctional enzyme variant (HPRTMunich) isolated from a patient with gout. J Biol Chem. 1984 Jan 10;259(1):27-30. PMID:6706936
  14. ↑ Cariello NF, Scott JK, Kat AG, Thilly WG, Keohavong P. Resolution of a missense mutant in human genomic DNA by denaturing gradient gel electrophoresis and direct sequencing using in vitro DNA amplification: HPRT Munich. Am J Hum Genet. 1988 May;42(5):726-34. PMID:3358423
  15. ↑ Davidson BL, Chin SJ, Wilson JM, Kelley WN, Palella TD. Hypoxanthine-guanine phosphoribosyltransferase. Genetic evidence for identical mutations in two partially deficient subjects. J Clin Invest. 1988 Dec;82(6):2164-7. PMID:3198771 doi:http://dx.doi.org/10.1172/JCI113839
  16. ↑ Davidson BL, Pashmforoush M, Kelley WN, Palella TD. Human hypoxanthine-guanine phosphoribosyltransferase deficiency. The molecular defect in a patient with gout (HPRTAshville). J Biol Chem. 1989 Jan 5;264(1):520-5. PMID:2909537
  17. ↑ Keough DT, Spacek P, Hockova D, Tichy T, Vrbkova S, Slavetinska L, Janeba Z, Naesens L, Edstein MD, Chavchich M, Wang TH, de Jersey J, Guddat LW. Acyclic Nucleoside Phosphonates Containing a Second Phosphonate Group Are Potent Inhibitors of 6-Oxopurine Phosphoribosyltransferases and Have Antimalarial Activity. J Med Chem. 2013 Mar 19. PMID:23448281 doi:10.1021/jm301893b

4ijq, resolution 2.00Å

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