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Istituto di scienza dell'alimentazione

Torna all'elenco Contributi in volume anno 2016

Contributo in volume

Tipo: Contributo in volume

Titolo: The fluorescent monomeric protein Kusabira Orange. Pressure effect on its structure and stability.

Anno di pubblicazione: 2016

Formato: Elettronico

: Capitolo

Autori: L. Picart-Palmade, D. Chevalier-Lucia, R. Lange, A. Facchiano, A. Pennacchio, M. Staiano, S. D'Auria

Affiliazioni autori: a Université de Montpellier, UMR IATE, cc023, 2 Place Eugène Bataillon, 34095 Montpellier cedex 05, France b Istituto di Scienze dell'Alimentazione, Consiglio Nazionale delle Ricerche, Via Roma, 64, I-83100 Avellino, Italy

Autori CNR:

  • SABATO D'AURIA
  • ANGELO FACCHIANO
  • MARIA STAIANO

Lingua: inglese

Sintesi: The structure and stability of the fluorescent protein monomeric Kusabira Orange (mKO), a GFP-like protein, was studied under different pressure levels and in different chemical environments. At different pH values (between pH 7.4 and pH 4.0) and under a pressure up to 600 MPa (at 25 °C), mKO did not show significant fluorescence spectral changes, indicating a structural stability of the protein. In more extreme chemical conditions (at pH 4.0 in the presence of 0.8 M guanidine hydrochloride), a marked reduction of mKO fluorescence intensity emission was observed at pressures above 300 MPa. This fluorescence emission quenching may be due to the loss of the intermolecular bonds and, consequently, to the destructuration of the mKO chromophore structure. Since the electrostatic and hydrophobic interactions as well as the salt bridges present in proteins are usually perturbed under high pressure, the reduction of mKO fluorescence intensity emission is associated to the perturbation of the protein salt bridges network.

Lingua sintesi: eng

Pagine da: 138

Pagine a: 143

Titolo del volume: Biochemistry and Biophysics Reports

N. volume della serie/collana: 7

DOI: 10.1016/j.bbrep.2016.06.002

Editore: elsevier B.V., Amsterdam (NLD)

Referee: Sì: Internazionale

Stato della pubblicazione: Published version

Indicizzato da: Science direct - Elsevier [S2405580816300863]

Parole chiave:

  • Pressure; Stability; mKO; Fluorescence; Unfolding; Chromophore

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