Different structural behaviors evidenced in thaumatin-like proteins: A spectroscopic study

Enrico Di Stasio, Fabio Perri, Federica Romitelli, Bruno Giardina, Alberto Vitali, F Rufini, F Secundo

Risultato della ricerca: Contributo in rivistaArticolo in rivista

8 Citazioni (Scopus)

Abstract

Three proteins belonging to the thaumatin-like proteins family were compared in this study from a structural point of view: zeamatin, a new recently isolated PR-5 from Cassia didymobotrya and the commercial sweet-thaumatin. The former two proteins possess antifungal activities while commercial thaumatin is well known to be a natural sweetener. Intrinsic fluorescence studies have evidenced that the three proteins behave differently in unfolding experiments showing different structural rigidity. All the three proteins are more stable at slight acidic buffers, but sweet-thaumatin has a major tendency to destructurate itself. Similar observations were made from circular dichroism studies where a structural dependence relationship from the pH and the solvent used confirmed a hierarchic scale of stability for the three proteins. These structural differences should be considered to be significant for a functional role
Lingua originaleEnglish
pagine (da-a)13-20
Numero di pagine8
RivistaProtein Journal
Volume27
DOI
Stato di pubblicazionePubblicato - 2008

Keywords

  • intrinsic fluorescence
  • unfolding

Fingerprint

Entra nei temi di ricerca di 'Different structural behaviors evidenced in thaumatin-like proteins: A spectroscopic study'. Insieme formano una fingerprint unica.

Cita questo