Although 6.45 micro m is not the strongest absorption band of biological tissues in the mid-infrared, a Mark-III free-electron laser (FEL) tuned to this wavelength can efficiently ablate tissue while minimizing collateral damage. A model has previously been presented that explains this wavelength dependence as a competition between two dynamic processes--explosive vaporization of saline and den...

Lactoferrin (LF) is a multifunctional protein in the transferrin family that has been widely used food and pharmaceutical products. However, it susceptible to denaturation during thermal processing, which can diminish functionality bioavailability of LF final product. Coacervation with biopolymers demonstrated as promising approach protect from denaturation. This work aims study formation condi...

Denaturation of defatted human albumin monomer, monitored by differential scanning calorimetry, is monophasic as reflected by the single, resulting endotherm. With low levels of various ligands, biphasic or monophasic unfolding processes are manifested as bimodal or unimodal thermograms, respectively. The greater the affinity of native protein for ligand, the greater is the tendency for biphasi...

There is circumstantial evidence that protein denaturation occurs in cells during heat shock at hyperthermic temperatures and that denatured or damaged protein is the primary inducer of the heat shock response. However, there is no direct evidence regarding the extent of denaturation of normal cellular proteins during heat shock. Differential scanning calorimetry (DSC) is the most direct method...

It has been estimated and demonstrated that the antioxidant capacity of proteins is increased as a result digestion in gastrointestinal tract, which can be contributed by denaturation digestion. This study aimed to evaluate effect proteolytic on activity bovine serum albumin (BSA) chicken egg white model systems. Denaturation with an anionic detergent (sodium dodecyl sulfate) papain trypsin act...

c3 typing was performed, by agarose gel electrophorisis, in 147 german patients suffering from hyperlipoproteinemia. the control group consisted of 322 healthy germans. high frequencies of non-typeable sera, varying between 16.66 and 35.71% in different hlp types, found in the present investigation are notable and are a clue for chemical denaturation of c3 protein in hlp patients. statistical a...

Protein denaturation plays a crucial role in cellular processes. In this study, denaturation of HIV-1 Protease (PR) was investigated by all-atom MD simulations in explicit solvent. The PR dimer and monomer were simulated separately in 9 M acetic acid (9 M AcOH) solution and water to study the denaturation process of PR in acetic acid environment. Direct visualization of the denaturation dynamic...

Green fluorescent protein (GFP) is an unusually stable autofluorescent protein that is increasingly being exploited for many applications. In this report, we have used fluorescence spectroscopy to study the effect of pH on the denaturation of GFP with sodium dodecyl sulfate (SDS), urea, and heat. Surprisingly, SDS (up to 0.5%) did not have any significant effect on the fluorescence of GFP at pH...

Effects of protein denaturation and formation of protein-sodium dodecyl sulfate (SDS) complexes on protein separation and identification were investigated using hollow fiber flow field-flow fractionation (HF5) and nanoflow liquid chromatography-electrospray ionization-tandem mass spectrometry (nLC-ESI-MS-MS). Denaturation and formation of protein-SDS complexes prior to HF5 separation resulted a...