Label-free DDA Proteomics

DESCRIPTION
SPECIFICATION
RESOURCES

Project Workflow

  • PROTEIN EXTRACTION
  • PROTEIN DIGESTION
  • HPLC FRACTIONATION
  • LC-MS/MS (DDA)
  • DATA ANALYSIS

Mass Spectrometry Service Specification

Label-free DDA Proteomics services are performed using nano-flow liquid chromatography and cutting-edge mass spectrometer (Q Exactive HF/HF-X and Triple TOF 5600).
  • Sample Preparation and Services

    • The QC of enzymatic hydrolysis is strictly controlled by LC-MS
    • 2h for DDA analysis
  • Quality Standard

    • Summary includes all methods and data analysis
    • Reports provided in Excel or PDF format, RAW files available upon request
  • Turn Around Time

    • Typical 3-4 weeks from sample QC acceptance to data report delivery

Sample Requirements

SAMPLE TYPE AMOUNT AND CONCENTRATION MINIMUM SAMPLE VOLUME
Protein sample in liquid solution Recommended 400 µg with fractionation: 2 µg/µL200 µL
Protein sample in liquid solutionMinimum Required 100 µg with fractionation: 1 µg/µL 100 µL

Data Analysis

DATA ANALYSIS
  • Data analysis and validation performed with Mascot
  • Protein identification and quantification list
  • Differential proteins data statistics and volcano plot
  • Principal component analysis (PCA) and cluster analysis
  • Protein GO/COG/KOG/Pathway annotation
  • GO/COG/KOG enrichment analysis of differential proteins
  • Protein-protein interaction analysis
  • Protein subcellular localization analysis
  • Time series analysis
  • Repeatability analysis

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