5-Oxoprolinuria


5-Oxoprolinuria (5-Oxoprolinase deficiency) is a result of a defect in the gamma-glutamyl cycle due to either 5-oxoprolinase or glutathione synthetase deficiency. In the case of glutathione synthetase deficiency, the glycine is not incorporated into gamma-glutamylcysteine. In the case of 5-oxoprolinase, however, pyroglutamic acid accumulates. Symptoms include anemia, mental retardation, metabolic acidosis, respiratory distress and urolithiasis.

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References

  1. Wikipedia: 5-oxoprolinuria
  2. Uniprot: P48637
  3. OMIM: Entry 266130
  4. Engelke, U., van der Graaf, M., Heerschap, A., Hoenderop, S., Moolenaar, S., Morava, E., Wevers, R. (2007). Handbook of 1H-NMR spectroscopy in inborn errors of metabolism: body fluid NMR spectroscopy and in vivo MR spectroscopy (pp 81) (2nd ed). Heilbronn: SPS Verlagsgesellschaft
  5. Divry P, Roulaud-Parrot F, Dorche C, Zabot MT, Contraire B, Hagenfeldt L, Larsson A: 5-Oxoprolinuria (glutathione synthetase deficiency): a case with neonatal presentation and rapid fatal outcome. J Inherit Metab Dis. 1991;14(3):341-4. Pubmed
  6. Njalsson R, Ristoff E, Carlsson K, Winkler A, Larsson A, Norgren S: Genotype, enzyme activity, glutathione level, and clinical phenotype in patients with glutathione synthetase deficiency. Hum Genet. 2005 Apr;116(5):384-9. Epub 2005 Feb 17. Pubmed
  7. Spielberg SP, Kramer LI, Goodman SI, Butler J, Tietze F, Quinn P, Schulman JD: 5-oxoprolinuria: biochemical observations and case report. J Pediatr. 1977 Aug;91(2):237-41. Pubmed