کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1987186 | 1540274 | 2012 | 7 صفحه PDF | دانلود رایگان |
A systematic investigation on the effects of trifluoroethanol and acetonitrile at various concentrations on cellulase (EC 3.2.1.4) was studied by enzyme assay, intrinsic fluorescence, ANS binding, circular dichroism and ATR-Fourier transform infra red spectroscopy. The results show the presence of molten globule states at 3% (v/v) TFE and 80% (v/v) ACN. Cellulase aggregates at 25% (v/v) TFE and 90% (v/v) ACN, as detected by decrease in intrinsic and ANS fluorescence, loss in tertiary structure and enzyme activity, increase non-native β-sheet structure as evident from far-UV CD and FTIR spectra, increase in Thioflavin T fluorescence and shift in Congo red assay.
► Cellulase enzyme aggregates on addition of 25% (v/v) TFE and 90% (v/v) ACN.
► The partially folded states of cellulase one at 3% (v/v) TFE and another at 80% ACN were investigated.
► Aggregation in vivo may serve as a therapeutic target of many human disorders like type II diabetes and amyloid diseases.
Journal: International Journal of Biological Macromolecules - Volume 50, Issue 4, 1 May 2012, Pages 932–938