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Book ChapterDOI

The Bradford Method for Protein Quantitation

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TLDR
A rapid and accurate method for the estimation of protein concentration is essential in many fields of protein study, but is susceptible to interference from a wide range of compounds commonly present in biological extracts.
Abstract
A rapid and accurate method for the estimation of protein concentration is essential in many fields of protein study. The Lowry method ( Chapter 1 in vol. 1 of this series) has been widely used, but is susceptible to interference from a wide range of compounds commonly present in biological extracts. Although interference can be avoided by trichloracetic acid precipitation of the protein prior to assay, this lengthens the procedure.

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Journal ArticleDOI

What is Normalization? The Strategies Employed in Top-Down and Bottom-Up Proteome Analysis Workflows.

TL;DR: This article aims to cast light on the potential sources of bias and where normalization could be applied to return the sample to its normal state and suggests solutions where possible but, in some cases, solutions are not available.
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Truncation of the processive Cel5A of Thermotoga maritima results in soluble expression and several fold increase in activity.

TL;DR: TCel5A1, to the authors' knowledge, is the first processive cellulase from an extreme thermophile reported so far and it showed temperature and pH optima 70 °C and 6.0, respectively, under the assay conditions used.
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Membrane fouling during the fractionation of phytosterols isolated from orange juice

TL;DR: In this paper, the authors used UF flat sheet membranes with molecular weight cut-off (MWCO) values of 10kDa fabricated from regenerated cellulose, polyethersulphone and fluoropolymer.
References
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Journal ArticleDOI

A rapid and sensitive method for the quantitation of microgram quantities of protein utilizing the principle of protein-dye binding

TL;DR: This assay is very reproducible and rapid with the dye binding process virtually complete in approximately 2 min with good color stability for 1 hr with little or no interference from cations such as sodium or potassium nor from carbohydrates such as sucrose.
PatentDOI

Measurement of protein using bicinchoninic acid

TL;DR: This new method maintains the high sensitivity and low protein-to-protein variation associated with the Lowry technique and demonstrates a greater tolerance of the bicinchoninate reagent toward such commonly encountered interferences as nonionic detergents and simple buffer salts.
Journal ArticleDOI

A rapid, sensitive, and versatile assay for protein using Coomassie brilliant blue G250

TL;DR: An assay for proteins in solution that depends on the conversion of Coomassie brilliant blue G250 in dilute acid from a brownish-orange to an intense blue color has high reproducibility and can detect less than 1.0 μg of albumin.
Journal ArticleDOI

Refinement of the coomassie blue method of protein quantitation. A simple and linear spectrophotometric assay for less than or equal to 0.5 to 50 microgram of protein.

TL;DR: The Coomassie brilliant blue G assay for proteins described by Bradford (1976) (Anal Biochem72, 248) was reexamined and it was found that the extinction coefficient of the dye-protein complex solution remained constant over the protein concentration range of 08 to 10 μg/ml of solution.
Journal ArticleDOI

Minimization of variation in the response to different proteins of the Coomassie blue G dye-binding assay for protein.

TL;DR: Modifications to the Coomassie blue G dye-binding assay for protein are described which remove much of the variation previously observed in the response of this assay to different proteins.
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