A Triple Knockout Isobaric-Labeling Quality Control Platform with an Integrated Online Database Search.

Area of Science:

• Proteomics
• Analytical Chemistry
• Biochemistry

Background:

• Isobaric tagging enables proteome-wide protein quantification but suffers from ratio compression due to ion interference.
• Evolving instrumentation and methods necessitate robust quality control platforms for reliable comparisons.

Purpose of the Study:

• To introduce TKO-iQC, an integrated platform for quality control in isobaric tagging-based proteomics.
• To provide tools for optimizing parameters and comparing sample data.

Main Methods:

• Development of TKO-iQC, comprising Triple Knockout (TKO) yeast digest standards and a web-based application.
• Introduction of TKOpro9 and TKOpro16 standards for TMTpro reagents.
• Update of the TKO Viewing Tool to TVT2.0.

Main Results:

• TKO-iQC offers a streamlined workflow for assessing instrument performance.
• The platform facilitates straightforward comparisons across different samples and experimental conditions.
• New TKOpro standards enhance the utility of TKO-iQC for TMTpro-based experiments.

Conclusions:

• TKO-iQC provides a robust solution for quality control in isobaric tagging proteomics.
• The platform simplifies the process of validating instrument performance and data quality.
• TKO-iQC is essential for advancing reproducible and reliable proteomic analyses.