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Non-labeled Plant Protein Quantitative Analysis (Label-free / DIA)

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Introductions

Molecular Biology Research

Non-labeled protein quantitative analysis means that no stable isotope-labeled samples are required, and each sample is tested separately. Since there is no need to label samples, the cost of non-labeled protein quantitative analysis technology is low, and there is no limit to the amount of samples tested at one time, and the protein expression differences of multiple samples can be compared at the same time. According to the different mass spectrometry data acquisition modes, the non-labeled protein quantification is divided into label free method (LFQ) using data dependent acquisition mode (DDA) and DIA method using data independent acquisition mode (DIA). These two technologies have been widely used in protein quantitative analysis. In the field of agricultural molecular breeding, it is mainly applied to protein expression changes in samples under different treatments / different physiological conditions, and protein regulatory network research and other directions, to assist breeders in the selection of high-protein crops.

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Technical characteristics

  • DIA is a new mass spectrometry data acquisition method developed in recent years. DIA can fragment all precursor ions within a specific mass range, and collect fragment ion information of all precursor ions for protein qualitative and quantitative.
  • DIA technology is particularly suitable for protein research with large sample sizes.
  • Compared with DDA, DIA has better accuracy and repeatability.

Experimental procedure for non-labeled protein quantification

Experimental procedure for non-labeled protein quantification

Analysis content

Standard information analysis Mass spectrometry accuracy assessment
Reference protein database establishment (DIA)
Protein database establishment and Mascot software search (LFQ)
Protein identification and quantification
Protein function annotation (GO function, KEGG metabolic pathway)
Advanced protein annotation (protein domain analysis, transcription factor analysis, etc.)
Differential protein analysis
Differential protein GO/KEGG function enrichment analysis
GSEA analysis
Customized information analysis Proteome and transcriptome association analysis
Protein interaction network analysis

Sample requirements

  • Fresh plant tissue > 2 g
  • The total amount of protein in the protein solution > 500 μg

Project cycle

  • It takes 50~70 working days to complete the standard process.

Feedback to customers

  • Raw data
  • A project report includes experimental procedures, related mass spectrometry parameters, and standard analysis results.

Service process

Service process for non-labeled protein quantification

Advantages

  • Lifeasible specializes in providing services related to agricultural molecular breeding, with standardized systems and scientific management.
  • The experiment adopts a carefully optimized experimental procedure, which has extremely high efficiency and specificity.
  • The one-stop service we provide makes your upstream and downstream experiments seamlessly connected, facilitates your experiments more conveniently and quickly.
  • With a strong bioinformatics team, it can meet the various in-depth data analysis needs of customers.
  • Personalized customized package service.

※ For research or industrial use.

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