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Home / Assay Kits

Peptide Assay Kit

SKU : BHE16300255

This product includes 0.5 ml of 10 x Dye C57. It is for 200 assays using 96-well plates. Cuvettes may also be used for measurements.

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Mfr.No.	PEP200
Description	Short amino acid chains or peptides play key roles in many biological functions. Peptides from antigens are responsible for immune responses. Many biologically secreted and synthetic peptides have been used or being developed as drugs in various therapeutic areas including treatment of infection, cancer, diabetes, and cardiovascular diseases. The MicroMolar Peptide Assay Kit (Catalog number PEP200) is designed for concentration measurement of various peptides. The assay is based on increase of fluorescence at 535 nm of the dye C57 in the presence of peptides. The assay kit can be used for measurements peptide concentrations in synthetic or biochemical reactions, pharmaceutical products and environmental water samples. The assay sensitivity varies from micromolar to millimolar concentrations depending on the nature of peptides. The assay is compatible with HEPES buffer, low concentrations of non-ionic detergent (<0.01%), MgCl2 (< 5 mM), CaCl2 (<5 mM), EDTA (< 1 mM) and phosphate (< 1 mM). It is not compatible with thiol compounds such as DTT. The MicroMolar Peptide Assay Kit (catalog number PEP200) includes 0.5 ml of 10 x Dye C57. It is for 200 assays using 96-well plates. Cuvettes may also be used for measurements.
Concentration measurement	Biomolecules

Product Manual	Datasheet
Protocols Description	ASSAY PROTOCOL The following assay protocol is based on using a 96-well plate for the measurement. The sample volume is 100 µl and the final assay volume is 125 µl. For 384-well plate assays, the sample volume is 60 µl and the final assay volume is 75 µl. For assays using cuvette, the sample volume is 800 µl and the final assay volume is 1000 µl. STANDARD CURVE The assay sensitivity greatly depends on the nature of the peptide. 1. Sample preparation: Prepare 100 µl of peptide solutions in the wells of a black 96-well plate with a two-fold serial dilution from 5 mM to zero in a 10 mM HEPES, pH 7.4 buffer. For 10 samples, dilute 27 µl of the 10 x C57 dye 10-fold with water to make 270 µl of 1 x C57 dye. 2. Detection: Mix 25 µl of 1 x dye C57 with 100 µl of the peptide solutions for 15 min and read the fluorescence at 535 nm (excitation at 485 nm). 3. Data Analysis: Plot the fluorescence intensity Fc and the Peptide concentration [Peptide] to generate the linear standard curve. Fc = a [Peptide] + b Where the Fc values are from experimental data, the a and b values are from the linear fitting between the Fc values and the Peptide concentrations. UNKNOWN SAMPLES Follow the same procedure to measure the fluorescence intensity Fc values from the unknown samples. Calculate the peptide concentrations in the unknown samples using the Fc values from the unknown samples and the a and b values from the standard curve. [Peptide] = (Fc – b) / a

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SKU	Supplier No.	Size	Your price	Quantity
BHE16300255	PEP200	200 assays	$302.17		Add to Cart

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