نتایج جستجو برای: isoelectric solubilization precipitation
تعداد نتایج: 72413 فیلتر نتایج به سال:
Abstract Broken kernels are among the by-products of processing cashew nuts which have less commercial value. The present work aimed to obtain a kernel protein concentrate from broken kernels, and then characterize it as well using in vegetable burger formulation. was obtained by isoelectric precipitation at four different pHs subsequent drying. Higher yield 58.6% proteins (pH 4.0 4.5). showed ...
Background and purpose: Human epidermal growth factor (hEGF) is a polypeptide of 53 amino acids with various medical application such as wound healing. The purpose of this study was cloning, expression, and purification of recombinant human EGF (rhEGF) and assessment of its mitogenic effect on NIH 3T3 cells. Materials and methods: Subcloninig of hEGF was performed in to pET24a (+). Protein e...
The effect of Triton X-100, Na cholate and Tween 80 on the solubilization of integral membrane proteins in intact cells, spheroplasts and inner-membrane fragments of Salmonella typhimurium was studied. The detergents were used in various concentrations (1.6 to 64 mM) and cytochromes b and d were used as marker to monitor the solubilization of membrane-bound proteins. Results showed that no inne...
Urea is an effective solubilizer for dyes with low aqueous solubility. To establish, at a molecular level, the reason behind action of urea as solubilizer, we employ rigorous statistical thermodynamics approach based on Kirkwood-Buff theory solutions. We show that (i) contrary to classical hypothesis “water structure breaking”, effect dye hydration makes minor contribution solubilization; (ii) ...
The solubilization dynamics of dimyristoylphosphatidylcholine (DMPC) liposomes, as induced by sodium dodecyl sulfate (SDS), were investigated; this investigation was motivated by several types of atypical behavior that were observed in the solubilization in this system. The liposomes and surfactants were mixed in a microchip, and the solubilization reaction of each liposome was observed using ...
Phosphate solublization activity of Bacillus subtilis in different carbon and nitrogen sources with insoluble form of phosphate sources like tricalcium phosphate and rock phosphate were studied. TCP solubilization with different carbon sources irrespective of incubation period can be related in the following order: glucose, fructose, arabinose, mannose, sucrose, lactose, and sorbitol. The pH dr...
It has been previously reported that the purified U. P. possessing remarkable Ca-reduction activity and circulating leucocyte effect in rabbit with dosage 1mg per kg is obtained by ethanol fractionation of the crude U. P. prepared from human urine by isoelectric precipitation. Further investigation led to the finding that Parotin-like substance exists in normal rabbit urine. This substance was ...
Rice plants were treated with 50 microM copper sulfate to induce the synthesis of phytochelatins by means of a series of enzymatic reactions, including that of photochelatin synthase. Phytochelatin synthase extracted from 3-week-old rice seedlings was purified through a series of steps including precipitation with ice-chilled acetone, QAE A-50 anion exchange column, Amicon XM-50 ultrafiltration...
Reduction of ferric iron in the presence of HuTu 80 cells or duodenal microvillus membranes (MVMs) was investigated. With both systems, NADH-dependent reduction of Fe3+/NTA (nitrilotriacetic acid) was demonstrated, using the ferrous iron chelator ferrozine. Uptake of Fe3+ from Fe3+/NTA by HuTu 80 cells was strongly inhibited by addition of ferrozine, indicating that Fe2+ is the substrate for th...
Apisin, a protein that is unique to royal jelly (RJ), is known to compose the greater part of the RJ proteins and to exist as a heterooligomer containing major royal jelly protein 1 and apisimin. However, few reports on the methods for quantifying apisin have been published. Thus, we attempted to quantify apisin using HPLC, a widely used analytical technique, as described below. Isoelectric pre...
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