A successful strategy for the recovering of active P21, an insoluble recombinant protein of Trypanosoma cruzi

作者：dos Santos Marlus Alves; Teixeira Francesco Brugnera; Teixeira Moreira Heline Hellen; Rodrigues Adele Aud; Machado Fabricio Castro; Clemente Tatiana Mordente; Brigido Paula Cristina; Silva Rebecca Tavares E; Purcino Cecilio; Barbosa Gomes Rafael Goncalves; Bahia Diana; Mortara Renato Arruda; Munte Claudia Elisabeth^*; Horjales Eduardo; da Silva Claudio Vieira

来源：Scientific Reports, 2014, 4(1): 4259.

DOI：10.1038/srep04259

Structural studies of proteins normally require large quantities of pure material that can only be obtained through heterologous expression systems and recombinant technique. In these procedures, large amounts of expressed protein are often found in the insoluble fraction, making protein purification from the soluble fraction inefficient, laborious, and costly. Usually, protein refolding is avoided due to a lack of experimental assays that can validate correct folding and that can compare the conformational population to that of the soluble fraction. Herein, we propose a validation method using simple and rapid 1D H-1 nuclear magnetic resonance (NMR) spectra that can efficiently compare protein samples, including individual information of the environment of each proton in the structure.

• 出版日期2014-3-4