Crystalline structures of l-cysteine and l-cystine: a combined theoretical and experimental characterization

Yangyang Su, Etienne P. Hessou, Estefania Colombo, Gustavo Belletti, Ali Moussadik, Ivan T. Lucas, Vincent Frochot, Michel Daudon, Stéphan Rouzière, Dominique Bazin, Kezhi Li, Paola Quaino, Frederik Tielens

Research output: Contribution to journalArticlepeer-review

38 Scopus citations

Abstract

It is assumed that genetic diseases affecting the metabolism of cysteine and the kidney function lead to two different kinds of pathologies, namely cystinuria and cystinosis whereby generate l-cystine crystals. Recently, the presence of l-cysteine crystal has been underlined in the case of cystinosis. Interestingly, it can be strikingly seen that cystine ([–S–CH2–CH–(NH2)–COOH]2) consists of two cysteine (C3H7NO2S) molecules connected by a disulfide (S–S) bond. Therefore, the study of cystine and cysteine is important for providing a better understanding of cystinuria and cystinosis. In this paper, we elucidate the discrepancy between l-cystine and l-cysteine by investigating the theoretical and experimental infrared spectra (IR), X-ray diffraction (XRD) as well as Raman spectra aiming to obtain a better characterization of abnormal deposits related to these two genetic pathologies.

Original languageEnglish
Pages (from-to)1123-1133
Number of pages11
JournalAmino Acids
Volume54
Issue number8
DOIs
StatePublished - Aug 2022

Keywords

  • Biominerals
  • Characterization
  • Computer simulations
  • Crystalline structure
  • l-cysteine
  • l-cystine

Fingerprint

Dive into the research topics of 'Crystalline structures of l-cysteine and l-cystine: a combined theoretical and experimental characterization'. Together they form a unique fingerprint.

Cite this