Absolute Quantification (AQUA)

Absolute Quantification (AQUA)

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Creative Proteomics


Absolute Quantification is a targeted quantitative proteomics technique that exhibits robust efficacy and is being increasingly utilized for a wide variety of quantitative proteomics studies. AQUA strategy is for the absolute quantification (AQUA) of proteins and their modification states. Peptides are synthesized with incorporated stable isotopes as ideal internal standards to mimic native peptides formed by proteolysis. These synthetic peptides can also be prepared with covalent modifications (e. g. , phosphorylation, methylation, acetylation, etc.) that are chemically identical to naturally occurring posttranslational modifications. Such AQUA internal standard peptides are then used to precisely and quantitatively measure the absolute levels of proteins and post-translationally modified proteins after proteolysis by using a selected reaction monitoring analysis in a tandem mass spectrometer.

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Melissa George
Creative Proteomics
45-1 Ramsey Road, Shirley, NY 11967, USA
shirley, New York, 11967
United States